CBSE Class 7 Science Sample Paper Set 24

CBSE Class 7 Science Sample Paper Set X.Sample Papers are the very important for every student. The sample papers should be practiced to gain extra marks in examinations. The sample papers have been prepared based on summative assessment1 and summative assessment 2 pattern. The sample papers have been prepared based on pattern of last year examinations and as per latest changes in the syllabus. Students, teachers and parents can download all CBSE educational material and very well prepared worksheets from this website.  All CBSE educational material is developed by our panel of teachers, have also been submitted by CBSE teachers and students. 

I. Very short answer type question: 

1. What are villi? What is their location?

2. What is reeling?

3. Classify the changes as physical change or chemical change

(a) photosynthesis (b) dissolving sugar in water

II. Short answer question: 

4. Write two points of differences between parasites and saprotrophs

5. What is meant by the following term?

(a) Rearing (b) Sericulture

6. What is land breeze and sea breeze?

7. How would you show that setting of curd is a chemical change?

8. Name the elements that effect weather of a place.

9. When are the maximum and minimum temperatures likely to occur during the day?

10. Suggest two methods to find out wind direction at a given place.

11. Why holes are made in hanging banners and hoardings?

III. Short answer question: 

12. Give a brief description of the process of synthesis of food in a green plant.

13. Explain in brief various steps involved in processing of fibres into wool.

14. State differences between laboratory thermometer and clinical thermometer.

15. When baking soda is mixed with lemon juice, bubbles are formed with the evolution of a gas. What type of change is it? Explain

16. The tropical rainforest has a large population of animals explain why it is so.

17. What planning is required in advance to deal with the situation created by a cyclone?

IV. Long answer question: 

18. (a) Where is bile produced? Which component of the food it help to digest?

(b) Name the type of carbohydrates that can be digested by ruminants and not by human. Give the reason also. 

(b) Define the following:

(a) digestion (b) absorption (c) egestion

19. Explain why:

(a) An antacid tablet is taken when you suffer from acidity.

(b) Calamine solution is applied on skin when ant bites.

(c) Factory waste is neutralized before disposing it into water bodies.

OR

(a) Three liquids are given to you. One is hydrochloric acids another is sodium hydroxide and third

is a sugar solution. How will you identify them? You have only turmeric indicator.

(b) Blue litmus paper is dipped in a solution. It remain blue. What is the nature of the solution? Explain.

20. (a) Explain how soil is formed.

(b) How is clayey soil useful for crops?

OR

(a) Sketch the cross section of soil and label the various layers.

(b) Write two differences between clayey soil and sandy soil.

V. Activity based MCQS. [½ x16=8]

21. The green pigment present in leaf is

(a) chlorophyll (b) mesophyll

c) chromoplast (d) leucoplast

22. Which of the following are necessary for photo synthesis?

(a) carbon dioxide (b) water

(c) chlorophyll and sunlight (d) all of these

23. The saliva breaks down starch into

(a) amino acid (b) glycerol

(c) fatty acid (d) sugar

24. The tip of the tongue has taste buds which identify ………………… taste.

(a) sweet (b) sour

(c) salty (d) bitter

25. Which of the following animals fleece is used for making wool?

(a) yak (b) llama

(c) camel (d) all of these

26. Burning of silk thread and woolen thread produces same smell because both are made from.

(a) natural fibre (b) synthetic fibres

(c) acrylic (d) nylon

27. The normal temperature of human body is

(a) 35O C (b) 36OC

(c) 37OC (d) 38OC

28. The process of transfer of heat in solids is

(a) conduction (b) convection

(c) radiation (d) all of these

29. The solutions which do not change the colour of either red or blue litmus are known as

(a) acidic solution (b) basic solution

(c) neutral solution (d) none of these

30. In acidic solution the

(a) blue litmus change to red

(b) red litmus change to blue

(c) turmeric’s yellow colour change to brown

(d) none of these

31. The colour of copper sulphate solution becomes------------------ when iron blade’s dipped into it for some time

(a) blue (b) green

(c) pink (d) reddish brown

32. When a pinch of baking soda is added to vinegar the gas produced is

(a) oxygen (b) carbon dioxide

(c) nitrogen (d) sulphur dioxide

33. High speed winds are accompanied by

(a) increased air pressure (b) reduced air pressure

(c) no effect on air pressure (d) none of these

34. It is difficult to force the paper into the bottle because

(a) air pressure is less at the mouth (b) air pressure is more at the mouth

(c) both ‘a’ and ‘b’ (d) none of these

35. The rotting dead matter in the soil is called.

(a) weathering (b) humus

(c) soil profile (d) gravel

36. The lowest percolation rate will be for.

(a) sandy soil (b) loamy soil

(c) clayey soil (d) none of these

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