Science Practical QuizPrelims I – 2017-18

Grade 8

Time: 60 Minutes

Max Marks: 50

PART A : GENERAL SCIENCE FACTS

1. Which of the following is not a member of the solar system?

a. Oort gas cloud b. Constellation c. Kuiper Belt d. Artificial satellite

2. Which is the most abundant organic molecule on the surface of the Earth?

a. Cellulose b. Chitin c. DNA d. Hemoglobin

3. Which instrument is used to measure the relative humidity of air?

a. Hygrometer b. Salinometer c. Calorimeter d. Hydrometer

4. SI Unit for pressure is 2

a. Pascal b. Bar c. Newton/mm d. All of the above

5. The characteristic odour of garlic is due to which of the following?

a. Chlorine containing compounds b. Fluorine containing compounds

c. Nitrogen containing compounds d. Sulphur containing compounds

6. Which of the following species use ultrasound for navigation and hunting prey?

a. Cat b. Cow c. Bat d. Owl

7. The metal stored in kerosene due to its high reactivity with air and water is

a. Magnesium b. Zinc c. Sodium d. Calcium

8. Which of the following is not a petroleum product?

a. Bee Wax b. Paraffin c. Asphalt d. Kerosine

9. Name the non metal present in the core of a pencil.

a. Lead b. Graphite c. Charcoal d. Phosphorous

10.A sound wave is a special type of electromagnetic wave.

a. True b. False

PART B : APPLICATION BASED QUESTIONS

11.A boy notices a bright object in the evening sky which he confuses with a star. Later he learns that it is Venus after verifying the

facts. Which part of the sky was watching?

a. Northern sky b. Southern sky c. Western sky d. Eastern sky

12.Which of the following voices is likely to have a minimum frequency?

a. Baby girl b. Baby boy c. A man d. A woman

he

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SET - A

Read the following instructions carefully before you answer the questions.

1. This test consists of 50 questions of one mark each. All the questions are compulsory with no negative marking.

2. All the questions are Multiple Choice Questions (MCQ).

3 The question paper is divided into four parts as shown below.

a. Questions 1 – 10 - General Science Facts

b. Questions 11 - 20 - Application Based Question

c. Questions 21 - 30 - Arithmetic Aptitude

d. Questions 31 - 50 - Logical Reasoning and Mental Ability

4. A separate OMR sheet has been provided where you can mark your response to the question by darkening the circle

respective to the answer choice.

5. Please use HB dark pencil to darken the answer on the OMR sheet.

6. There is only one correct answer for each question. Any response to a question with more than one circle darkened will not

be counted. No marks will be given for any such answer.

7. Do not write on this question paper. It will not be evaluated.

13.How many images of a candle will be formed if it is placed between two parallel plane mirrors separated by 40 cm?

a. 1 b. 15 c. 100 d. Infinite

14.Which example shows that force can change shape and size of an object?

a. Hitting cricket ball which has reached the boundary line for six runs b. Shot put thrown by an athlete

c. Air pressure inside the football d. Bending of the steel rod

15.When a plastic comb is rubbed against dry hair, it acquires …………………. which makes it attract small pieces of paper.

a. Heat energy b. Magnetism c. Electric charge d. Nuclear force

16.Ashish wanted to boil water but was unable to acquire any suitable utensil. Can he boil the water in a paper cup?

a. No, paper is a bad conductor of heat b. Yes, it doesn't burn as water absorbs the heat

c. No, paper cup burns immediately d. Yes, as paper is noncombustible

17. It is difficult to write on a polished surface with pencil because

a. Pencil lead reacts with polished surface b. Polished surfaces have no friction

c. Polished surfaces have less friction d. Polished surfaces have high friction

18.A child is suffering from presbyopia. The doctor suggests her to use correction lenses (spectacles). What kind of lenses will be

used in the spectacles ?

a. Concave b. Convex c. bifocal lens d. Plane lens

19.In an experiment of hydrolysis, a student connects positive terminal of the battery to an electrode A and negative to electrode B.

Over which electrode he/she will observe more bubbles getting generated?

a. Electrode A b. Electrode B C. Equal amount at both the electrodes d. No gas is generated

20.If you were to examine a plant and an animal cell under a microscope, which of the following would you find in both?

a. Cell wall, ER, & Golgi body b. Cell wall, Cytoplasm, & Golgi body

c. Nucleolus, Ribosomes, ER d. Mitochondria, Cytoplasm, & Chloroplast

PART C : ARITHMETIC APTITUDE

21.What is the angle of incidence if the reflected ray is at an angle of 90 degrees to the incident ray ?

a. 15 degrees b. 45 degrees c. 180 degrees d. 60 degrees

22.A pendulum oscillates 40 times in 4 seconds. Find its frequency.

a. 10 Hz b. 15 Hz c. 0.025 Hz d. 25 Hz

23.A man is facing north-west. He turns 90 degrees in the clockwise direction and then 135 degrees in the anticlockwise direction.

Which direction is he facing now?

a. East b. West c. South- East d. North-West

24.Which of the following gives the largest number?

a. .25 x 100 b. .40 x 80 c. 200 x .15 d. .90 x 90

25.How much is 20% of 200?

a. 40 b. 50 c. 60 d. 20

26.The sum of two numbers is 12 and their product is 35. What is the sum of the reciprocals of these numbers?

a. 7/32 b. 35/8 c. 1/35 d. 12/35

27.Bhuvan plants 10201 apple trees in his garden and arranges them so that there are as many rows as columns. The number of rows are

a. 101 b. 100 c. 102 d. data not sufficient

28.Adil has two pieces of rope. One piece of rope is 70 meters and other is 98 meters. He has plans to cut the rope into smaller piece

of equal size with zero wastage. What is the greatest possible length of each piece?

a. 14 b. 28 c. 7 d. 1

29.Volume of a box is 3000 cubic cm. The ratio of the length, width and height is 4:3:2 respectively. What could its length be?

a. 12 cm b. 125cm c. 20cm d. 24cm

30.Which point best represents the value of A+B+C?

a. A b. E c. F d. C

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PART D : LOGICAL REASONING AND MENTAL ABILITY (Orientation of the Figures may have been changed)

31-35: Spot out the odd figure.

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36-40: Find out the similar figure among the choices.

Problem Figures Answer Figures

36.

37.

38.

39.

40.

31.

32.

33.

34.

35.

41-45: Find the missing portion (?).

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41.

42.

43.

44.

45.

46-50: Find the next logical pattern.

Problem Figures Answer Figures

Problem Figures Answer Figures

46.

47.

48.

49.

50.