PYQ Vault

Day 231: CBSE Class 10 Science

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

  1. Question 1

    How do Organisms Reproduce?. Asked once: 2024

    8
    The part of the flower which attracts insects for pollination is/are :

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  2. Question 2

    Magnetic Effects of Electric Current. Asked once: 2023

    32
    (a) List two factors on which the magnitude of magnetic field produced by a current carrying straight conductor depends. (b) State the rule which determines the direction of magnetic field in the above case. (c) Draw the pattern of magnetic field lines produced in this case.

  3. Question 3

    Acids, Bases and Salts. Asked once: 2025

    2
    In order to prepare dry hydrogen chloride gas in humid atmosphere the gas produced is passed through a guard tube (drying tube) which contains :

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  4. Question 4

    Carbon and its Compounds. Asked once: 2023

    36 (b)
    (i) Write the name and general formula of a chain of hydrocarbons in which an addition reaction with hydrogen can take place. Stating the essential condition required for an addition reaction to occur, write the chemical equation giving the name of the reactant and product of such a reaction. How is an addition reaction different from a substitution reaction ? (ii) Write the structure of benzene.

  5. Question 5

    Control and Coordination. Asked once: 2025

    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) : In our actions of writing or talking, our nervous system communicates with the muscles. Reason (R) : Cranial nerves and spinal nerves form the peripheral nervous system.

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