PYQ Vault

Day 94: CBSE Class 10 Science

5 questions. Try each one first, then open its answer.

  1. Question 1

    Our Environment. Asked once: 2025 (same type asked 3 times)

    15
    In the food chains given below. Select the most efficient food chain in terms of energy :

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  2. Question 2

    Our Environment. Asked once: 2026 (same type asked 3 times)

    13
    Given below is a pyramid showing various trophic levels in an ecosystem : (a) From the organisms listed below, identify which one is to be placed at which trophic level ? Deer, Grass, Lion, Snake, Rabbit (b) Discuss the reason why primary consumers will have more energy as compared to secondary consumers ? (c) Why is the base of the pyramid broad ?

  3. Question 3

    Our Environment. Asked once: 2026 (same type asked 3 times)

    6
    Which of the following is a non-biodegradable pollutant ?

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  4. Question 4

    Our Environment. Asked once: 2026 (same type asked 3 times)

    7
    The reasons for excessive generation of wastes are : (i) Use and throw policy. (ii) Increased availability of packaged food. (iii) Increased construction wastes. (iv) Non-sorting of dry and wet wastes.

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  5. Question 5

    The Human Eye and the Colourful World. Asked once: 2026 (same type asked 3 times)

    37
    Study the given diagram and answer the questions that follow : (a) Write the name of the eye defect shown in the diagram. Where is the image formed in this eye defect with respect to the retina of the eye ? (b) List two causes of this eye defect. (c) With the help of a ray diagram, show how this defect of vision is corrected.