PYQ Vault

Day 14: CBSE Class 10 Science

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

  1. Question 1

    Magnetic Effects of Electric Current. Asked 3 times: 2023*, 2024*, 2025 (* = numbers or wording changed that year)

    Two statements are given, one labelled Assertion (A) and the other labelled Reason (R). Select the correct answer from the options given below.
    19
    Assertion (A) : Magnetic field lines around a bar magnet never intersect each other. Reason (R) : Magnetic field produced by a bar magnet is a quantity that has both magnitude and direction.

    Tap an option to check your answer.

  2. Question 2

    Magnetic Effects of Electric Current. Asked 3 times: 2022*, 2023*, 2025 (* = numbers or wording changed that year)

    32
    (a) Name and state the rule which determines the force on a current carrying conductor placed in a uniform magnetic field. (b) Consider the following three diagrams in which the entry of a positive charge (+Q) in a magnetic field is shown. Identify giving reason the case in which the force experienced by the charge is (i) maximum, and (ii) minimum.

  3. Question 3

    Metals and Non-metals. Asked 3 times: 2023*, 2024*, 2025 (* = numbers or wording changed that year)

    6
    During electrolytic refining of copper, the anode, the cathode and the electrolyte used respectively are

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  4. Question 4

    Our Environment. Asked 3 times: 2022*, 2023*, 2025 (* = numbers or wording changed that year)

    26
    We do not clean natural ponds or lakes whereas an aquarium or a swimming pool needs to be cleaned regularly. Why ?

  5. Question 5

    Our Environment. Asked 3 times: 2022*, 2023*, 2025 (* = numbers or wording changed that year)

    15
    Consider the following food chain : Grass →\rightarrow Grasshopper →\rightarrow Frog →\rightarrow Snake →\rightarrow Eagle If the amount of energy available at third trophic level is 50 kJ, the available energy at the producer level was :

    Tap an option to check your answer.