all india prelims test series 2019€¦ · oil production, oil price will continue to decrease...

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.


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.


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.


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%.


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.


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.


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.


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


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.


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


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.’


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


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


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.


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.


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


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


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 4 × 4 squares = 5 × 5 = 25 Number of 5 × 5 squares = 4 × 4 = 16



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:


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


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.


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.


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


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°


all india prelims test series 2019€¦ · oil production, oil price will continue to decrease...

Documents