Sample Paper 3
Time: 2 hrs Max. Marks : 80
General Instructions
1. Questions l to 12 are multiple choice and carry 1 mark each.
2. Questions l3 to 15 are very short answer type and carry 4 mark each.
3. Questions l6 to 21 are short answer type and carry 3 mark each.
4. Questions 22 to 28 are short answer type and carry 4 mark each.
5. Questions 29 to 30 are long answer type and carry 5 mark each.
Q.1. Fill in the blanks.
(a) Clothes of ______ colour absorb heat better.
(b) Water reaches great heights in the trees because of suction pull caused by ______ .
(c) All the non-green plants and animals including human beings are ______ .
(d) In a battery, positive terminal of one cell is connected to the ______ terminal of the next cell.
Q.2. Correct the following statements by changing one word in each statement.
(a) Bile is produced in intestine.
(b) Eruption of volcano is an irreversible change.
(c) The basic unit of speed is km/h.
(d) Polar bear has brown colour which matches with its surroundings.
Q.3. Choose the statement which is not correct in the case of an electric fuse.
(a) Fuses are inserted in electric of all buildings
(b) There is a maximum limit on the current which can safely flow through the electric circuits
(c) There is a minimum lii on the current which can safely flow in the electric circuits
(d) If a proper fuse is inserted in a circuit it will blow off if current exceeds the safe limit
Q.4. Components of circuit diagram can be represented using
(a) symbols
(b) photographs
(c) colours
(d) works
Q.5. Which mark is necessary on an electric appliances?
(a) AGMARK
(b) ISI
(c) FICCI
(d) KSK
Q.6. The total water
(a) in the lakes and rivers of the world remains constant
(b) under the ground remains constant
(c) in the seas and oceans of the world remains constant
(d) of the world remains constant
Q.7. Which of the following is not a correct statement?
(a) Forest trees are cut down to obtain timber
(b) Forest trees are cut down to obtain paper
(c) Forest trees are cut down to obtain fine wood
(d) Forest trees are cut down to obtain natural rubber
Q.8. In a filtration plant water is filtered using layers of
(a) sand and clay
(b) clay and fine gravel
(c) sand and fine gravel
(d) sand, fine gravel and medium gravel
Q.9. The plant which traps and feeds on insect is
(a) Cuscuta plant
(b) China rose
(c) Pitcher plant
(d) Rose plant
Q.10. The reaction between an acid and a base to form salt and water is called
(a) carbonation
(b) hydrogenation
(c) neutralisation
(d) titration
Q.11. Availability of water and minerals in the soil of maximum absorption by roots is in the
(a) A-horizon
(b) B-horizon
(c) C-horizon
(d) Surface of soil
Q.12. During the process of exhalation, the ribs move
(a) down and outwards
(b) up and inwards
(c) down and inwards
(d) up and outwards
Q.13. In which of the following parts of human body, are sweat glands absent?
(a) Scalp
(b) Armpits
(c) Lips
(d) Palms
Q.14. See the figure given below.
The time period of a simple pendulum is the time taken by it to travel from
(a) A to B and back to A
(b) O to A, A to B and B to A
(c) B to A, A to B and B to O
(d) A to B
Q.15. (a) Match the following columns.
|
Column I |
Column II |
|
(a) Nitrogen |
(i) Yields silk fibres |
|
(b) Fats |
(ii) Yellow to blue |
|
(c) Cocoon |
(iii) Material used for making electromagnets |
|
(d) Hydrochloric acid |
(iv) Bacteria |
|
(e) Stopwatch |
(v) Fatty acids and glycerol |
|
(f) Soft iron |
(vi) Yellow to green |
|
|
(vii) Sports activities |
(b) Find the odd one out.
(i)) Tongue, absorption, taste, swallow
(ii) Crocodile, whale, dolphin, fish.
Q.16. How does atmospheric pressure influence weather?
Q.17. What is sewage? Explain why is it harmful to discharge untreated sewage into rivers or seas.
Q.18. During summer vacation, Garry was studying inside his home. He was feeling really hot inside, so his mom advised her to go out and study under the tree. He was surprised as the temperature outside was much more than inside but he followed his mom's advice. After few hours, he came to his mother and asked the reason behind it. His mother explained to him that it is all because of transpiration.
(a) What is transpiration?
(b) Name the transpiratory organ of the plant.
Q.19. Consider the following food chain : Grass → Deer → Lion
What will happen if the lions are removed from the above food chain?
Q.20. Draw a diagram to show the dispersion of white light into seven colours by a glass prism.
Q.21. How sound can be produced by different musical instruments? Classify and give their names.
Q.22. How does nutrition occur in Amoeba?
Q.23. Why do we use mercury in the thermometer in place of water?
Q.24. Is the distilled water acidic/basic/neutral? How would you verify it?
Q.25. Melting of wax is a physical change but burning of wax is a chemical change. Give reasons.
Q.26. List four differences between clayey and sandy soil.
Q.27. A simple pendulum takes 32 s to complete 20 oscillations. What is the time period of the pendulum?
Q.28. When does the overloading of a household electric circuit occur? What harm can it do?
Q.29. Write and explain the different ways by which the seeds-dispersal takes place.
Q.30. In a test-tube having vinegar, some amount of baking soda is added. What will you observe? Write a word equation for this reaction. Name the type of change which takes place.
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