all india prelims test series 2019€¦ · oil production, oil price will continue to decrease...
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1 AIPTS 2019 (Mock – 2 CSAT) (E) Answer Key Byju’s Classes: 9873643487
ALL INDIA PRELIMS TEST SERIES – 2019
Mock – 2 (CSAT)
Answer Key Ans:1)(a)
Explanation: The passage explains that by
forgiving ourselves we can free ourselves from
the prison of guilt. Therefore, it can be safely
assumed that we can forgive ourselves. Thus, Option (a) is the correct answer. Option (b)
says the just opposite and thus is incorrect.
Option (c) is incorrect. It can’t be told about
every human being. Every human being is
not trapped in the prison of guilt. Further,
the passage advises us to love ourselves and thus Option (d) is also incorrect which says
just the opposite.
Ans:2)(b)
Explanation: The passage explains that once we open the door of our heart to ourselves
and reach inside, we are perfect. Opening the
door of our heart to ourselves here implies
loving and forgiving ourselves. Thus, Option
(b) is the correct answer.
Option (a) is incorrect. The passage mentions about loving others the way we love
ourselves. However, in the passage this is not
described as the way it of achieving
perfection. Option (c) is also incorrect. The
passage does not mention that being at peace with ourselves will lead to perfection. Option
(d) is wrong because the passage clearly says
that “if you wait for perfection, it never
arrives.”
Ans:3)(c) Explanation: In the story the man betted
that horse number five will win the race. But
he came fifth instead. Thus, the passage
discusses how predicting future based on
dreams and signs can lead to unfavourable results.
Thus, Option (c) is the correct answer.
Option (b) is incorrect because it is
discussing just the opposite. Option (a) is also
incorrect. It can’t be inferred from the
passage if the man was inexperience in horse betting or not. Option (d) is incorrect because
nothing is discussed about lucky number.
Ans:4)(a)
Explanation: Option (a) is correct. The
passage argues that pending cases can’t be reason for denying access to justice to the
poor and weaker sections of the community.
So, equality of opportunity must be provided
to both rich and poor.
Option (b) is incorrect. The passage is not
about the role played by PILs. The passage is
about whether to allow PIL or not. So it can’t
be the central theme. Option (c) is incorrect.
Justice Bhagwati was in favour of allowing PIL to be head side by side other cases. The
passage doesn’t mention that PILs should be
expedited. And, certainly Justice Bhagwati’s
views is not the central theme of the passage.
Option (d) is also incorrect. The passage
presents an argument that state can’t make poor and marginalized people wait till cases of
people who can afford is disposed off. So, the
central theme is argument that poor should
treated equally. The fact related to more
number of cases pertaining to well off people is difficult to derive either and it is also not
the central theme.
Ans:5)(b)
Explanation: Option (a) is incorrect. The
Author has said that protecting reputation at the cost of freedom of speech and expression
can derail democracy. So it is very unlikely
that author would agree to defamation
remaining a criminal offence.
Option (b) is correct. The Author argues that in defamation cases even telling truth is not
enough. Thus, it seems that s/he wants truth
to be a valid defence.
Option (c) is incorrect. The Author doesn’t say
that there should be no right to reputation.
S/he just says that it should not be given priority over the fundamental right to freedom
of speech and expression.
Option (d) is also incorrect. The given
statement has been as an analogy in a
particular context. It won’t be logical to universalize it out of context.
Ans:6)(b)
Explanation: In the passage the author is
believes that despite the negotiations to freeze
oil production, oil price will continue to decrease unless there is no concrete action.
And, concrete action is possible only when
Iran participates. Thus option (b) is the
correct answer.
Option (a) is incorrect author does not show
the concern about possible oil price rise. Option (c) is incorrect because there is no
mention of any war in the passage. Option (d)
is also incorrect. He is not content with the
promises of oil producing nations especially
Iran.
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2 AIPTS 2019 (Mock – 2 CSAT) (E) Answer Key Byju’s Classes: 9873643487
Ans:7)(c)
Explanation: The production freeze is likely
to be a non-starter because according to the
passage, after years of sanctions, Iran will
increase its oil production to capture the market share. Option (c) is therefore the
correct answer.
Option (a) is incorrect because shale gas
technology is not mentioned in the passage.
Similarly, the conflicting political interest of
Russia and Saudi Arabia is not discussed in the passage and hence, Option (b) is also
incorrect. Option (d) is wrong because in the
passage nowhere it is discussed that Iraq,
Qatar and Venezuela are not supporting the
freeze.
Ans:8)(a)
Explanation: The author has linked “first
rate of intelligence” and “very bright” as both
pertains to opposing ideas. It is made more
clear by “yet they simultaneously..”. Hence Option (a) is correct.
Option (b) cannot be inferred from the
passage and hence incorrect. Similarly option
(d) and option (c) are also incorrect as no
such information is given in the passage.
Ans:9)(d)
Explanation: The statement highlights the
possibility that a single solution (Public
administration design) might not solve all the
problems. Hence option (d) is correct. Option (a) and (b) are exaggerated
conclusions and hence incorrect. Option (c)
cannot be inferred as the statement is about
design of public administration and not the
abilities of countries.
Ans:10)(b)
Explanation: The passage explains that if
you cannot win an argument by proving the
person a non-compos mentis. Thus, option (b)
is the best justification of this. Option (a) is incorrect because synthesis of
two conflicting ideas often produces good
results. Here the emphasis is on avoiding
wrong method of arguing. Option (c) is
incorrect. Human beings don’t lack the ability to figure out their own faults. But when their
ego is hurt they resist that. Option (d) is also
incorrect because one can be 100% wrong
sometimes.
Ans:11)(c) Explanation: The passage discusses the role
of religion and tradition in denying equal
rights to women. Thus option (c) is the correct
answer.
Option (a) is incorrect because compasrison between Islamic states and other states is not
done in the passage. Option (b) is incorrect
because it is not clear if religion is the biggest
hindrance. Religion may be one of the
hindrance. Option (d) is also incorrect
because gender equality and religions may
exist together. The need is to get rid of wrong and unjust traditions.
Ans:12)(b)
Explanation: The passage discusses how
melting of Artic ice will bring water to surface
which absorbs more sunlight and thus causes more warming. Thus, option (b) is the
correct answer.
Option (a) is incorrect because it is not
discussed in the passage whether Artic melt
will eventually lead to collapse of global biodiversity systems or not. Option (c) is
incorrect because the passage does not
convey that most important threats to
mankind will begin as the Arctic ice melts.
Option (d) is incorrect because the
repercussions of Artic melt will not remain confined to the Northern hemisphere of
Earth. The passage clearly mentions that the
large-scale changes in ocean circulation will
affect biodiversity beyond the Arctic.
Ans:13)(a)
Explanation: Statement 1 is correct because
the passage clearly mentions the negative
consequences of Arctic melt.
Statement 2 is incorrect because the author
believes that replacement of ice by water in Arctic may accelerate global warming and not
decelerate it. Similarly, statement 3 is also
incorrect because criticism of developed
nations is not the issue of the passage.
Ans:14)(a)
Explanation: The passage discusses how on
one hand nuclear nations are often critical of
other countries doing nuclear tests and on
the other hand they do not criticize
themselves for nuclear disasters. Thus, Hypocrisy of developed world is essentially
discussed in the passage. Hence, option (a) is
the correct answer.
Option (b) is incorrect because nuclear
proliferation is not discussed in the passage. Option (c) is incorrect because even though
the damage to coral reef is mentioned here, it
is not the main theme of the passage. Option
(d) is also incorrect because silence of Britain
does not indicate the possibility of a nuclear
alliance between Britain and France!
Ans:15)(c)
Explanation: Let the incomes of Ajay and
Arun be 4x and 3x respectively and let their
expenses by 3y and 2y respectively. Saving of Ajay and Arun is Rs. 1200.
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3 AIPTS 2019 (Mock – 2 CSAT) (E) Answer Key Byju’s Classes: 9873643487
According to the question:
4x – 3y = 1200 ….(i)
3x – 2y = 1200 ….(ii)
Multiplying (i) by 2 and (ii) by 3, we get:
8x – 6y = 2400 9x – 6y = 3600
Solving the above two equations, we get:
x = 1200
Monthly income of Ajay = 4x = 4 × 1200 = Rs
4,800
Monthly income of Arun = 3x = 3 × 1200 = Rs 3,600
So, sum of their incomes = 4800 + 3600 = Rs
8,400
Hence, option (c) is the correct answer.
Ans:16)(c)
Explanation: All the friends got some fixed
number of chocolates from first bag and then
B, C and D were given chocolates from the
second bag in the ratio 1 : 2 : 3 respectively
Clearly, the number of chocolates given to A, B, C and D form Arithmetic Progression.
Now, in an AP, the sum of middle two terms
is equal to the sum of the extreme two terms.
Therefore, Numbers of chocolates in the two
bags = 2 × (Number of chocolates given to B and C) = 2 × 20 = 40.
Hence, option (c) is the correct answer.
Ans:17)(c)
Explanation: Let’s say that the pedestrian
travels with the speed of ‘a’ km/h while the cyclist travels with the speed of ‘b’ km/h.
As we know that the speeds of pedestrian and
cyclist are different, thus they travel different
distance in two hours.
Distance travelled by pedestrian till the meeting point = speed × time = 2a km.
Similarly, distance travelled by cyclist till the
meeting point = 2b km.
Return journey:
Time taken by cyclist = Distance travelled by
cyclist/speed of cyclist = 2b/b = 2 hours. Time taken by pedestrian = distance travelled
by pedestrian/speed of pedestrian = 2a/a = 2
hours.
Clearly, the pedestrian and the cyclist took
the same time to complete the journey. Hence, option (c) is the correct answer.
Explanation for Questions (18 to 20): Let
us analyze each statement one by one.
1. Abhay and Ganesh must be seated on the
extreme right and Brinda must be seated at the center.
Clearly, Abhay and Ganesh may interchange
their seats and still satisfy the given
condition, as shown below.
2. Chandan and Deepa must be seated as far
apart as possible.
Based on the above statements we get:
Again, Chandan and Deepa might
interchanges their seats and still satisfy the given condition.
Clearly, Elizabeth and Fatima may sit in the
empty seats in any order. So they may occupy
the empty seat in 2 ways.
Ans:18)(d) Explanation: In the above arrangement,
Abhay and Ganesh may interchange their
seats; Chandan and Deepa might interchange
their seats; and Elizabeth and Fatima may
occupy the empty seats in 2 ways. Thus, the total number of possible
arrangements = 2 × 2 × 2 = 8
Hence, option (d) is the correct answer.
Ans:19)(c)
Explanation: Chandan and Deepa might sit at the extreme left end.
Fatima has to be in either of the two seats
that are shown empty in the arrangement
above. Hence, she cannot sit at either of the
two ends. Hence, option (c) is the correct answer.
Ans:20)(d)
Explanation: Elizabeth has to sit at the
second or third place, shown empty in the
seating arrangement, whereas Abhay must be seated in the fifth or sixth position. Hence,
they cannot be seated together.
Ans:21)(d)
Explanation: Let the initial population of the city = z.
Percentage increase in the population after
first year = 10%
So, the population after one year of city = z +
10% of z = 1.1z
Percentage increase in the population after second years = 20%
So, the population after second year = 1.1z +
20% of 1.1z = 1.1z × 1.2 = 1.32z
Percentage decrease in the population after
third year = 10%.
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4 AIPTS 2019 (Mock – 2 CSAT) (E) Answer Key Byju’s Classes: 9873643487
Population after third year = 1.32z – 10% of
1.32z = 1.32z × 0.90 = 1.188z
So, required percentage increase = 100
z
z–z188.1
= 18.8%
Thus, the population of city will increase by 18.8% in the three years.
Hence, option (d) is the correct answer.
Ans:22)(d)
Explanation: Capacity of tank = 10 liters
Time taken to fill the tank when one outlet and inlet taps are open = 2 min.
So, Rate of filling of tank = 10/2 = 5
liter/min.
Thus, the second outlet tap should have a
flow rate of 5 liter/min or more to prevent the tank from ever getting filled up completely.
Hence, option (d) is the correct answer.
Ans:23)(d)
Explanation: Based on given information, we
may draw the diagram which is as follow:
As we know that in ABC, AD is median and
AD=1
2 BC. Therefore, it is evident that all the
three sides i.e.
AD, CD and DB are equal.
If BAD = 30º
ABD = 30º [as AD = DB]
ADB = 180º – 30º – 30º = 120º
ADC = 180º – 120º = 60º
Now ADC + DAC + ACD = 180º
Or 60º + 2 ACD = 180º
Or 2 ACD = 120º
Or ACD = 60º = ACB
So, ACB = 60º
Hence, option (d) is correct.
Ans:24)(a)
Explanation: The maximum capacity of the
required uncalibrated container has to be
such that it measures both the tankers in an
integral number of times. So capacity of both
the tankers must be exactly divisible by the capacity of the container.
Now, as we have to find the maximum
capacity of the uncalibrated container, so we
will find the GCF/HCF of 825 and 675.
Let us write their factors: 825 = 3 × 5 × 5 × 11
675 = 3 × 3 × 3 × 5 × 5
The common factor of 825 and 675 is 3 × 5 ×
5, which is equal to 75.
Thus, the maximum capacity of the
uncalibrated container = 3 × 5 × 5 = 75 liters. Hence, option (a) is the correct answer.
Ans:25)(d)
Explanation: Clearly, Z teaches Data
Sufficiency in April.
Hence, option (d) is the correct answer.
Ans:26)(d)
Explanation: Immediately after Biology in
March, Data Sufficiency is taught in April by
Z. Hence, option (d) is the correct answer.
Ans:27)(b)
Explanation: Clearly, Biology is taught in
March.
Hence, option (b) is the correct answer.
Ans:28)(a)
Explanation: Tree’s production of fruits on
five days are 5, 5 × 2 or 10, 10 × 2 or, 20, 20
× 2 or 40 and 40 × 2 or 80, respectively. Here, there can be two cases:
(i) If monkey starts eating the fruits from the
first day itself.
(ii) If monkey starts eating the fruits from the
second day.
Discussing each case one by one we get, Case 1: If monkey starts eating the fruits
from the first day itself
Remaining fruits out of daily output on the
tree, over five days are 5 – 5 = 0, 10, 20 – 5 =
15, 40 and 80 – 5 = 75, respectively. Thus, the total number of fruits on the tree at
the end of five days = 0 + 10 + 15 + 40 + 75 =
140
Case 2: If monkey starts eating the fruits
from the second day
Remaining fruits out of daily output on the tree, over five days are 5, 10-5=5, 20, 40-
5=35 and 80, respectively.
Thus, the total number fruits on the tree at
the end of five days = 5 + 5 + 20 + 35 + 80 =
145 Hence, total fruits at the end of five days can
be either 140 or 145.
Hence, option (a) is the correct answer.
Ans:29)(d)
Explanation: The probability that Ramesh
hits the target = 4
3
The probability that Anuj hits the target = 3
2
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5 AIPTS 2019 (Mock – 2 CSAT) (E) Answer Key Byju’s Classes: 9873643487
It is possible that both of them hit the target
(i.e. it’s not mutually exclusive). Both are
independent of each other so:
Probability that both of them hit the target =
P (A and B) = P(A) × P(B) = 2
1
3
2
4
3
Thus, we need to find the probability where either of them hit the target or both of them
hit the target.
Now, probability of the target being hit = P(A
or B) = P(A) + (P(B) – P(A and B) =
12
11
2
1–
3
2
4
3
Note: This can also be explained using the figure shown below, where area represents
the required probability area we need to find.
Ans:30)(a)
Explanation: We are given three statements: Grass is greener than leaf. (G>L)
Chili is greener than grass. (C>G)
Combining the two statements we get:
(C>G>L)
Leaf is not greener than melon. This means that leaf is either equal in greenness to melon
or is lower.
Thus, we cannot say anything about melon’s
position in sequence.
Option (a) is correct as we can see that Chili
is greener than leaf. Option (b) and option (d) are incorrect as
nothing can be said about melon’s position in
sequence.
Option (c) is also incorrect as leaf and melon
both can be least green of all objects.
Ans:31)(c)
Explanation: Let x and y be the ten’s and
unit’s digits respectively of the numeral
denoting the Shakuntal’s age. Then,
Shakuntla’s age = (10x + Y) years; Husband’s age = (10y + x) years.
As we know, that difference between their
ages is one-eleventh of their sum.
So, we get,
(10y + x) – (10x – y) = (10y + x + 10x + y) (9y – 9x) = (11x + 11y)
9y – 9x = x + y
10x = 8y
x < y
Clearly, y should be a single digit which
multiplied by 8 becomes a multiple of 10.
So, x = 4, y = 5.
Hence, Shakuntla’s age = 10x + y = 45 years.
Hence, option (c) is the correct answer.
Ans:32)(a)
Explanation: The original series is 16, 17, 21, 30, 46, ?
Here we add perfect square (1, 4, 9, 16 and
25) to each term to get the next number.
16 + 1 = 17
17 + 4 = 21
21 + 9 = 30 30 + 16 = 46
46 + 25 = 71
Hence, option (a) is the correct answer.
Ans:33)(c) Explanation: Let the total distance covered
by the bus in the round trip be x km.
Hence, the total time taken in completing the
journey = Total distance/average speed =
x/48 hour
Let y be the average speed during the second half of the journey
Now, total time = time taken during 1st half of
the trip + time taken during 2nd half of the
trip
Putting the given values we get,
y
x5.0
36
x5.0
48
x
Or y
x5.0
36
x5.0–
48
x
Or y
x5.0
144
x
Or y = 72 km/hour
Ans:34)(c)
Explanation: Total profit generated is Rs. 2
lakh and Mr. C gets 10% fix share from the
profit. So, the fix share of Mr. C = 2 lakh × 10% =
Rs. 20,000
Remaining amount = 2,00,000 – 20,000 = Rs.
1,80,000
Remaining amount i.e. Rs. 1,80,00 is shared
among the partners in the ratio of the amounts contributed by each one of them.
Ratio of the amount contributed by each one
of them = 1.5 lakh : 4.5 lakhs : 9 lakhs = 1 : 3
: 6
Thus, the amount is divided in the ratio 1 : 3 : 6.
Amount received by Mr. A = [1/(1+3+6)] ×
180000 = (1/10) × 180000 = Rs. 18,000
Amount received by Mr. B = [3/(1+3+6)] ×
180000 = (3/10) × 180000 = Rs. 54,000
Amount received by Mr. C = [6/(1+3+6)] × 180000 = (6/10) × 180000 = Rs. 1,08,000
Total amount received by Mr. C = fixed share
+ Share in the distributed profit = 20000 +
108000 = Rs. 1,28,000
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6 AIPTS 2019 (Mock – 2 CSAT) (E) Answer Key Byju’s Classes: 9873643487
Difference between the amount received by
Mr. B and C = 128000-54000 = Rs. 74,000
Ans:35)(b)
Explanation: Statement 1, 2 and 3 are correct as they are directly mentioned in
passage.
Statement 4 is incorrect. It is out of scope of
the given passage. We still do not know if
these clearings will reduce our dependence on
foreign military supply.
Ans:36)(c)
Explanation: Option (a) and (b) are directly
mentioned in the passage.
Option (c) is also mentioned, but not as a part of project 751. Hence, it is incorrect.
Option (d) is also directly mentioned in
passage in the penultimate line.
Ans:37)(c)
Explanation: Option (a) is out of scope as it is never implied in the passage about Editing
Section 20A through a recent amendment.
Option (b) is incorrect in the context of this
passage. Hence, beyond the scope of passage.
Option (d) is also out of context and thus incorrect.
Option (c) is suggested by the passage. The
2010 amendment allowed the NRI’s to vote
but requirement of physical presence made it
impracticable for NRI’s to vote. Thus, by
allowing the voting through postal ballot government is fulfilling the intent of this
amendment.
Ans:38)(d)
Explanation: Option (a) and (b) are directly mentioned in passage in the second sentence.
Option (c) is also correct. Passage says that,
petition filed in SC argued that the provision
was in violation of Article 14 of the
Constitution.
Thus, option (d) is the suitable option.
Ans:39)(c)
Explanation: Statement 1 is clearly given in,
paragraph 2. (ineluctable = inescapable).
Statement 2 is also correct. Paragraph 2 says, ‘despite the undeniable demographic…’ shows
that these changes have taken place, and
even then caste remains significant.
Statement 3 can also be directly inferred from
paragraph 2.
Statement 4 is out of scope of the passage. These divisions are certainly less important
than the caste division, but to conclude as
‘not’ important would be erroneous.
Ans:40)(c) Explanation: Option (a) is incorrect. The
national movement leaders were not wrong.
They were ‘bullish’ about it and not out
rightly false. Option (b) and (c) are out of
context of the passage.
Option (c) is correct. It is clear from the
statement – ‘The leaders of the nationalist movement…’ This line shows that leaders of
national movement were overambitious that
caste will vanish away.
Ans:41)(b)
Explanation: Option (a) is incorrect. It is caste based hierarchy that dominates the
hearts of Indians and not income or
occupation based hierarchy.
Option (b) is correct. The author says that
constitution has not eliminated caste from hearts of Indians.
And thus still Indians continue to believe in
caste and thus caste is reflected in their
behaviour as well.
Option (c) is incorrect. The statement made
by the author is inclusive of politicians but not limited to them.
Option (d) is futuristic in nature and cannot
be conclusively implied.
Ans:42)(c) Explanation: Statement 1 and 2 are
mentioned in the very 1st line of the passage.
Passage says “Clean sir is a public good,
something that everyone should enjoy.”
Statement 3 is incorrect. We cannot derive
this meaning of public good from the passage.
Ans:43)(c)
Explanation: Both statements are correct.
Author gives both these reasons in the very
first paragraph. According to the passage, “given the extent to which urban India’s
ambient air has deteriorated and the burden
it places on human health, we can no longer
tarry. WHO says New Delhi is the world’s
most polluted city, perversely making it an
area where India has overtaken China’s capital, Beijing.”
Ans:44)(d)
Explanation: The passage in para 3 clearly
states – ‘Now that oil refineries no longer subsidise the retail price of diesel, a capital
crunch can’t be an excuse to prevent
upgradation of refineries for superior fuel.’
Thus, author suggests Up-gradation of
refineries. Statement 1 is correct.
Further author says ‘it doesn’t matter if auto lobbies protest’ for implementation of BS V
norms in Delhi.’
Thus, statement 2 is also correct.
Statement 3 is also correct. The passage
states – ‘also, tax incentives that favour diesel over petrol don’t make sense given the
environmental harm caused by diesel.’
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7 AIPTS 2019 (Mock – 2 CSAT) (E) Answer Key Byju’s Classes: 9873643487
Finally statement 4 is also correct. To quote
the passage, ‘Delhi and other major cities
should shift to BS V.’
Ans:45)(a) Explanation: Statement 1 is correct as per
the given passage. Paragraph 3 states that
NN bars carriage providers from granting
different content providers differential access
to consumers in terms of pricing or speed.
Statement 2 goes against the intent of the author. Also, it is not mentioned in the
passage. Statement 3 is also incorrect.
Paragraph 3 states that Net Neutrality is not
a fundamental right in India.
Statement 4 is correct. 4th paragraph says not ensuring Net Neutrality, kills innovation and
competition.
Ans:46)(b)
Explanation: Option (a) is incorrect. The two
aspects have just been mentioned together. But his statement is not the implication of
the question.
Option (b) is the correct option. It has been
discussed in paragraph 5 and paragraph 6.
Option (c) is incorrect. These statements do not hold relevance together.
Ans:47)(c)
Explanation: The passage explains that poor
nations or the poor people are not responsible
for their poverty. Thus, Option (a) and Option (d) are incorrect. Option (b) is also incorrect.
The author is criticising the developed
nations. He is not satisfied with their efforts.
Option (c) is correct. The passage mentions
that the global decisions are influenced by the policies of the rich and the powerful.
These are responsible for the poverty in poor
nations.
Ans:48)(a)
Explanation: The passage mentions the leaders of rich countries, influential people
and multinational corporations as the ones
responsible for global decisions, policies, and
practices which are responsible for poverty in
poor nations. Thus Options (b), (c), (d) are global causes of poverty.
The leaders of the third world countries are
not mentioned in the passage and thus
Option (a) is not global cause of poverty and
thus, the correct answer.
Ans:49)(c)
Explanation: The story of Napoleon
highlights Napoleon’s ability to think
innovative ideas even in crisis situations. This
quality helped him get his team out of trouble. Thus, option (c) is correct. Courage,
patience and altruism are not discussed as a
virtue in the passage. Therefore, Option (a),
Option (b) and Option (d) are incorrect.
Ans:50)(d)
Explanation: Statement (1) is incorrect as the passage mentions that “Much later, from
the 1960s, the native peoples were
encouraged to write their own histories”.
From 1840’s, Anthropologists started
studying natives but their history were not
written. Statement (2) is incorrect because from the passage it can’t be concluded that
the native people were illiterate. Statement (3)
is also incorrect as the passage explicitly
mentions about the discoverers “They hardly
mentioned the native peoples”. So, none of the statements are correct and thus, option
(d) is the correct answer.
Ans:51)(b)
Explanation: The cars and bikes are in the
ratio 7 : 11. Let the number of cars and bikes be 7X and 11X respectively.
It is known that there are 56 more bikes than
the number of cars.
Accordingly we get,
Or 7X + 56 = 11X Or 4X = 56
Or X = 14
Number of cars parked = 7X = 7 × 14 = 98
Number of bikes parked = 11X = 11 × 14 =
154
Hence, option (b) is the correct answer.
Ans:52)(b)
Explanation: The horizontal lines in the
graph depict the time-duration during which
the Rabbit was at rest, as distance is not increasing with time. Thus, it’s evident that
rabbit took rest for 3 times.
Ans:53)(a)
Explanation: The Rabbit overtook Tortoise
two times as shown in the graph given below.
These are the instances on which the line
graph of Rabbit moves above that of the
Tortoise, i.e. when the total distance travelled
by the Rabbit becomes more than that
travelled by the Tortoise. And other three
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8 AIPTS 2019 (Mock – 2 CSAT) (E) Answer Key Byju’s Classes: 9873643487
points where two lines cross are pointes
where tortoise overtook rabbit.
Ans:54)(a)
Explanation: The Tortoise overtook the Rabbit for the first time at point A as shown
in the graph below.
This happens at approximately 21 hours since the start of the race. Hence, option (a) is
the correct answer.
In Fact we may straightaway eliminate
options (c) and (d), as they fall outside the 15-
30 hours range, while point A is definitely within this range.
Ans:55)(b)
Explanation: It can be observed that in every
row the third number is the difference
between the cube of the first number and the square of the second number as shown
below,
1st row: 53 – 42 = 125 – 16 = 109
3rd row: 103 – 72 = 1000 – 49 = 951
Let P be the missing number. Similarly, 83 – P2 = 503
Or P2 = 512 – 503 = 9
Or P = 3
Thus, the missing number is 3.
Hence, option (b) is the correct answer.
Ans:56)(c)
Explanation: Following figure depicts the
path travelled by Mohan:
However, one should note that question asks
for the total distance travelled from the starting point and not the distance between
the starting and the end points.
Therefore, total distance = 8 + 1 + 5 + 3 = 17
km
Ans:57)(c)
Explanation: Number of revolutions in 1
hour = (10 × 60 × 60)/5 = 7200
Distance moved in 1 revolution =
Circumference of the wheel = 30 dm = 3m (as 10 decimeter = 1m.)
Hence, the distance moved in one hour = (3 ×
7200)/1000 km = 21.6 km
Therefore, the speed of the wheel = 21.6
km/hr.
Ans:58)(a)
Explanation: Let total work = 48 units. (Here,
48 in LCM of 12 and 16. Here we take LCM so
that number of units is divisible by both 12
and 16.) Ram takes 12 days and Shyam takes 16
days. Thus, per day they do 4 units and 3
units per day.
That is together they do 7 units of work in a
single day.
Thus, in 4 days they will do 28 units of work out of 48 units. Thus, work performed by
Suresh = 20 units.
It is given that for 48 units of work they get
7200 Rs. Thus per unit they are getting
(7200/48 = 150 Rs.) Thus, for 20 units of work Suresh should get
(20 × 150=3000 Rs.)
Ans:59)(b)
Explanation: All five lectures will be held
together during the days that are LCM of (2,3,4,5 and 6) and its multiples. LCM of
(2,3,4,5 and 6) = 60
Hence, the five lectures will be held together
on 1st day, 61st day, 121st day, 181st day and
241st day, i.e. a total of 5 days in 250 days.
Ans:60)(c)
Explanation: It is given that A and B together
have 60% of the total money, so the C and D
will have Rs. 40
C and D have Rs. 40 from Rs. 2 coins. Therefore, number of coins with them i.e. C
and D = 40/2 = 20 coins.
Hence, number of coins with A and B = 41-20
= 21 coins.
Now, Amount of money with A + Amount of money with B = 60
If A has x coins, then 5 × x + 2(21 – x) = 60
Or 5x – 2x + 42 = 60
Or 3x = 18
Or x = 6
Thus, the total amount of money with A = 6 × 5 = Rs. 30.
Hence, option (c) is the correct answer.
Ans:61)(b)
Explanation: Spinner A is divided into 3
equal sectors, thus the probability of the arrow falling in any of the sectors is 1/3.
While spinner B is divided into four equal
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9 AIPTS 2019 (Mock – 2 CSAT) (E) Answer Key Byju’s Classes: 9873643487
parts, thus the probability of the arrow falling
in any of its sector is 1/4.
Probability of winning a pink car = 12
1
4
1
3
1
Hence, option (b) is the correct answer.
Ans:62)(a) Explanation: The distance covered by the
athlete = 11 × 15 = 165m.
Circumference of the circular track = 2r = 2
× (22/7) × (70/2) = 220m
Now, 75% of 220 = 165
Hence, the athlete must have covered 3/4th of
the track. So, he must have reached point B.
If he now starts moving towards the center of
the circle, he will be facing the north.
Ans:63)(d)
Explanation: The area of the triangle =1/2
(length of the base × height of the triangle)
As the length of the base and the height of
the triangle is the same in all the three cases, the area of the triangle formed will be the
same in all the three cases, i.e. in case of
triangles APB, AQB and ARB.
Ans:64)(d)
Explanation: The figure consists of 3 shapes, viz. circle, triangle and a square, which are
placed one inside the other.
Going from one figure to another, the
following changes occur:
Outermost shape Middle shape Middle shape Innermost shape
Innermost shape gets rotated clockwise 90°
and becomes the outermost shape
Thus, in the 4th figure, the outermost triangle
will come in middle as it is; middle square
will become innermost as it is; circle will become the outermost figure. Rotating a circle
by 90° will not produce any change in the
original figure. Thus, correct answer is option
(d).
Ans:65)(b)
Explanation: A chessboard can be depicted
as below:
Number of 1 × 1 squares = 8 × 8 = 64
Number of 2 × 2 squares = 7 × 7 = 49
Number of 3 × 3 squares = 6 × 6 = 36
Number of 4 × 4 squares = 5 × 5 = 25 Number of 5 × 5 squares = 4 × 4 = 16
Number of 6 × 6 squares = 3 × 3 = 9
Number of 7 × 7 squares = 2 × 2 = 4
Number of 8 × 8 squares = 1
Total number of possible squares = 64 + 49 +
36 + 25 + 16 + 9 + 4 + 1 = 204 Hence, option (b) is the correct answer.
Ans:66)(b)
Explanation: From the given information the
following Venn diagram can be drawn:
Now protected areas having Monkeys only =
Total Protected areas having Monkeys –
Protected areas having both Deer and Monkey – Protected areas having both Tigers and
Monkeys = 12 – 7 – 3 = 2
It may be depicted in the form of a Venn
diagram as follows:
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10 AIPTS 2019 (Mock – 2 CSAT) (E) Answer Key Byju’s Classes: 9873643487
Clearly, number of protected area that had
monkey only is equal to 2. Hence, option (b) is the correct answer.
Ans:67)(b)
Explanation: Observing the Venn Diagram
obtained in the earlier question:
Total number of protected areas having at
least one of three animals = 7 + 7 + 2 + 1 + 3 + 6 = 26
Therefore, protected areas having none of
these 3 animals = Total number of protected
areas – Total number of protected areas
having at least one of three animals = 36 – 26 = 10
Hence, option (b) is the correct answer.
Ans:68)(d)
Explanation: Let assume that incomes of
Ram and Shyam are 5x and 3x respectively and their savings are 2y and 3y respectively.
We know that Expenditure = Income – Saving
Thus, expenditure of Ram = 5x – 2y …..(i)
And expenditure of Shyam = 3x – 3y …..(ii)
Now we know that expenditure of Ram is 4/5th of his income and his income in 5x.
Thus, expenditure of Ram = (4/5) × 5x = 4x
From equation (i), we get:
5x – 2y = 4x
Or x = 2y
Or y = x/2 Putting value of y in equation (ii), we get:
Expenditure of Shyam = 2
x3
2
x3–x3
Ratio of Expenditure =
3
8
x3
2x4
2
x3
x55
4
Hence option (d) is correct.
Ans:69)(d)
Explanation: Let’s assume present ages of A and B are A and B respectively.
Now, ratio of their present ages is 5:3.
Thus, (A/B) = (5/3)
Or 3A = 5B ……(i)
After 7 years, ages of A and B would be A+7
and B+7 respectively. But we know that ratio of their ages after 7
years = 6/5
Thus, (A+7)/(B+7) = 6/5
Or 5A + 35 = 6B + 42 …..(ii)
From equations (i) and (ii), we get: A = 5 and B = 3.
Thus, A + B = 8.
Hence correct option is (d)
Ans:70)(b)
Explanation: From 8 pm to 2:15 pm next day, total hours = 18 hours 15 min = 18 ¼
hours = 73/4 hours
6 min 5 sec of this clock = 6 min of correct
clock
(6/60) + (5/3600), i.e. 73/720 hours of this clock = 1/10 hours of correct clock
73/4 hours of this clock = 1/10 × 720/73 ×
73/4 = 18 hours
Means correct time was 18 hours after 8 pm
i.e. 2 pm next day.
Ans:71)(c)
Explanation: The passage discusses that
National Party invented apartheid as a means
to cement their control over the economic and
social system. Thus the corollary is that the roots of some forms of social discrimination
can be found in the struggle for power. Thus,
Option (c) is the correct answer.
Option (a) is incorrect. How resources led to
ruination of Africa is not discussed in the
passage. And, this cannot be corollary of the passage. Option (b) is also incorrect.
Independence of South Africa led to “anarchy”
or not is not discussed in the passage. Option
(d) is also incorrect. Relation between
economic backwardness and social divisions is not discussed in the passage.
Ans:72)(b)
Explanation: The passage discusses that a
plan of “Grand Apartheid” was executed,
emphasizing territorial separation and police repression. This implies that the existing
racial discrimination was more intensified.
Thus, Option (b) is correct.
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11 AIPTS 2019 (Mock – 2 CSAT) (E) Answer Key Byju’s Classes: 9873643487
Option (a) is incorrect. Racial discrimination
was not politicised. Option (c) is also
incorrect. Racial discrimination only
increased. It was not eliminated. Option (d) is
incorrect because whether “Grand Apartheid” was a philosophy or not is not discussed in
the passage.
Ans:73)(c)
Explanation: Option (a) tells about a trend
that ISRO doesn’t like to lose a chance to go to Mars. The passage only gives information
about one particular incidence. So, a trend
can’t be inferred. Similarly option (b) also
tries to generalize from one particular
incidence. Option (d) mentions Planning, manufacturing the spacecraft and the launch
vehicle as the most important part of any
space mission. The passage does talk about
them but it does not say that these are the
most important or not.
The passage says that the nearest launch window was only a few months away. And,
mission planning, manufacturing the
spacecraft and the launch vehicle and
readying the support systems took place
swiftly. Thus, it can be inferred that preparation of mission had to be completed in
short span of time.
Ans:74)(b)
Explanation: The question asks for a
statement that sums up the passage. Option (a) is correct but it is only based on the first
sentence of the passage. The Author says
“The data is then analysed to build a model”.
It doesn’t mean that the purpose of
experiment is to build a model. To build a model is just a scientific method. Thus,
option (c) is incorrect. Also, in the first
sentence the author says, “scientists
primarily ...” It means that most of scientists
do like this. This is not a set pattern to be
followed. Thus, option (d) is also incorrect. Option (b) correctly sums up the passage.
Ans:75)(d)
Explanation: Since all the adults are not
suffering from diabetes, giving insulin injection to all is not logical. So, option (a) is
not correct. The Author says, “The epidemic
is not evenly distributed around the world.”
So WHO should not treat all the countries
equal. It needs to support countries with high
prevalence rate more. Thus option(b) is also incorrect. The paragraph doesn’t give any
information about status of diabetes in India.
So, Option (c) is incorrect.
The author says, “The world is facing an
epidemic of diabetes mellitus.” So, most logical corollary is to equip public health
facilities with its treatment. Thus, option (d)
is correct.
Ans:76)(a)
Explanation: Author says that a government having ethical top executive is more likely to
implement state-of-the-art productivity
improvements technique. It doesn’t mean that
only top executive implements such
techniques. So option (c) is incorrect.
Similarly, option (d) is also incorrect as workers in ethical climate are only more likely
(not always) to have such a belief. The
passage does say that a high ethical climate
includes managers who set a good ethical
example. But it doesn’t sums up the whole paragraph. It is just explanation of one word
in the paragraph. So, option (b) is also not the
correct answer.
Option (a) is correct as the passage contrasts
the low ethical climate and high ethical
climate and it can be concluded that ethics lead to the effective government.
Ans:77)(d)
Explanation: The passage says, “virtue is an
integral feature of managerial competencies”. This doesn’t mean that competency is same
as ethics and it should be done away with.
Thus ethics can be the sole criteria for
measuring competency or skill set. Thus,
option (a) and (b) are not logical corollary. The
Author doesn’t give any detail about the current definition of skill. It may already be
including ‘skill’. So option (c) is also not
correct.
Option (d) can be derived from the last
sentence of the passage which says, “High ethics associate with better governance and
more successful public careers.”
Ans:78)(b)
Explanation: The passage has no information
regarding capitalists. So, option (a) is incorrect. The passage mentions about
avoidable suffering. Thus, it is possible to
avoid some suffering. So, option (c) is also
incorrect. The passage says, “unavoidable
suffering should be distributed as equally as possible.” It doesn’t mean that we should not
try to avoid suffering. So option (d) is not
correct.
The passage says, “one should demand the
least amount of avoidable suffering for all” It
means that sufferings, of all the persons, are worth avoiding. So, option (b) is correct.
Ans:79)(b)
Explanation: Method I:
Number of friends who hugged Sam = 73 Number of friends who shook hands with
Sam = 39.
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12 AIPTS 2019 (Mock – 2 CSAT) (E) Answer Key Byju’s Classes: 9873643487
Number of friends who both hugged and
shook hands with Sam = 27
Total number of friends who attended the
party = 73 + 39 – 27 = 85
So, the number of friends who were invited but did not attend the party = 100 – 85 = 15
Method II
The Venn diagram representing the given
scenario is as given below:
Friends who only hugged = 73 – 27 = 46
Friends who only shook hands = 39 – 27 = 12
Total number of friends who did not attend
the party = 100 – 46 – 27 – 12 = 100 – 85 =
15
Hence, option (b) is the correct answer.
Ans:80)(d)
Explanation: Alternately we can use the
formula,
Angle = (30ℎ −11𝑚
2 ), where h is the position of
hour hand and m is the position of minute hand.
Option (a): 5:30am
Angle = 30 × 5 – 11 × 30/2 = 150 – 165 = 15°
Option (b): 6:30 am
Angle = 30 × 6 – 11 × 30/2 = 180 – 165 = 15° Option (c): 11:55 am
Angle = 30 × 11 – 11 × 55/2 = 330 – 302.5 =
27.5°
Option (d): 2:05 am
Angle = 30 × 2 – 11 × 5/2 = 60 – 27.5 = 32.5°
Hence, option (d) is the correct answer.