PYQ Vault

Day 88: CBSE Class 10 Science

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

  1. Question 1

    Control and Coordination. Asked once: 2026 (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.
    9
    Assertion (A) : Plants have hormones that do not control directional growth. Reason (R) : Abscisic acid inhibits growth.

    Tap an option to check your answer.

  2. Question 2

    Control and Coordination. Asked once: 2025 (same type asked 3 times)

    9
    A pair of endocrine glands located in the human brain is

    Tap an option to check your answer.

  3. Question 3

    Control and Coordination. Asked once: 2024 (same type asked 3 times)

    10
    In a nerve cell, the site where the electrical impulse is converted into a chemical signal is known as :

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  4. Question 4

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

    15
    Study the I-V graph for three resistors of resistances R1\mathrm{R_1}, R2\mathrm{R_2} and R3\mathrm{R_3} and select the correct statement from the following :

    Tap an option to check your answer.

  5. Question 5

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

    13
    (a) A couple are parents to 4 daughters in a sequence, and do not have any son. Does this indicate that the husband does not produced Y-chromosome bearing sperms ? Explain. (b) What are the chances of this couple bearing yet another daughter ? Show with the help of a cross.