PYQ Vault

Day 51: CBSE Class 10 Science

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

  1. Question 1

    Control and Coordination. This type asked 3 times: 2024, 2025, 2026. This one: 2026

    11 (B)
    Which of the plant hormones are responsible for the following processes ? (i) Promote cell division (ii) Inhibition of growth (iii) Detection of light (iv) Wilting of leaves

  2. Question 2

    Control and Coordination. This type asked 3 times: 2024, 2025, 2026. This one: 2026

    2
    Identify the endocrine gland that regulates the growth of human body.

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  3. Question 3

    Control and Coordination. This type asked 3 times: 2023, 2024, 2026. This one: 2026

    4
    In a synapse, the chemical signal is transmitted from :

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  4. Question 4

    Electricity. This type asked 3 times: 2023, 2024, 2026. This one: 2026

    39 (A)
    V-I graph for a nichrome wire is shown in the diagram. (i) Prove that the graph follows Ohm’s law and calculate the resistance of nichrome wire from the given V-I graph. (ii) (I) Calculate the equivalent resistance of the combination of resistors connected in the given circuit. (II) Find the value of the total current drawn from the battery.

  5. Question 5

    Heredity. This type asked 3 times: 2023, 2024, 2026. This one: 2026

    6
    Sex is determined by different factors in various species. However, in human beings, it is determined genetically. Which amongst the following option(s) is/are correct for human beings ? (i) Gamete carrying X chromosome from female parent. (ii) Gamete carrying X chromosome from male parent. (iii) Gamete carrying Y chromosome from male parent.

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