PYQ Vault

Day 158: CBSE Class 10 Science

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

  1. Question 1

    Heredity. Asked once: 2024 (same type asked 3 times)

    Two statements are given, one labelled Assertion (A) and the other labelled Reason (R). Select the correct answer from the options given below.
    18
    Assertion (A) : Sex of the children will be determined by what they inherit from their mother. Reason (R) : Women have XX sex chromosomes.

    Tap an option to check your answer.

  2. Question 2

    How do Organisms Reproduce?. Asked once: 2025 (same type asked 3 times)

    35 (b)
    (i) Name the type of asexual mode of reproduction shown in the given figure. (ii) Identify the unicellular organism in the diagram. (iii) List any two advantages of asexual reproduction over sexual reproduction. (iv) Name and explain any one mode of asexual reproduction observed in Hydra.

  3. Question 3

    How do Organisms Reproduce?. Asked once: 2022 (same type asked 3 times)

    5
    Suggest any two contraceptive methods to control the size of human population and explain them.

  4. Question 4

    Life Processes. Asked once: 2026 (same type asked 3 times)

    5
    The following events occur during the process of photosynthesis. Choose the option that indicates the correct events. (i) Oxidation of carbon dioxide to carbohydrates (ii) Conversion of light energy into chemical energy (iii) Absorption of light energy by chlorophyll (iv) Conversion of hydrogen and oxygen into water

    Tap an option to check your answer.

  5. Question 5

    Life Processes. Asked once: 2023 (same type asked 3 times)

    29 (b)
    Write in sequence the steps for experimental verification of the fact that “sunlight is essential for photosynthesis”.