PYQ Vault

Day 65: CBSE Class 10 Science

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

  1. Question 1

    Control and Coordination. This type asked 2 times: 2024, 2026. This one: 2026

    10
    What are hormones ? State any one function of the following hormones : (i) Insulin (ii) Adrenaline

  2. Question 2

    Electricity. This type asked 2 times: 2025, 2026. This one: 2026

    39 (a)
    (i) Due to change in length and area of cross-section of a conductor, resistance of conductor changes while resistivity does not change. Why ? (ii) Conductors of electric toasters and electric iron are made of an alloy rather than a pure metal. Why ? (iii) Define the S.I. unit of electric current.

  3. Question 3

    Electricity. This type asked 2 times: 2025, 2026. This one: 2025

    25 (b)
    Define electric power. When do we say that the power consumed in an electric circuit is 1 watt ?

  4. Question 4

    How do Organisms Reproduce?. This type asked 2 times: 2024, 2026. This one: 2026

    Two statements are given, one labelled Assertion (A) and the other labelled Reason (R). Select the correct answer from the options given below.
    8
    Assertion (A) : Variations are not often seen in off-springs produced by asexual reproduction. Reason (R) : DNA molecule generated by replication is not similar to the original DNA.

    Tap an option to check your answer.

  5. Question 5

    Life Processes. This type asked 2 times: 2025, 2026. This one: 2026

    7
    Plants use variety of techniques to get rid of their waste materials. Some are mentioned below. Identify the incorrect one :

    Tap an option to check your answer.