PYQ Vault

Day 132: CBSE Class 10 Science

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

  1. Question 1

    Acids, Bases and Salts. Asked once: 2023 (same type asked 3 times)

    4
    Which of the following gives the correct increasing order of acidic strength ?

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  2. Question 2

    Acids, Bases and Salts. Asked once: 2023 (same type asked 3 times)

    2
    Few drops of aqueous solution of ammonium chloride are put on a universal indicator paper. The paper turns pink. Study the following table and choose the correct option.

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  3. Question 3

    Carbon and its Compounds. Asked once: 2024 (same type asked 3 times)

    4
    Carbon compounds : (i) are good conductors of electricity. (ii) are bad conductors of electricity. (iii) have strong forces of attraction between their molecules. (iv) have weak forces of attraction between their molecules. The correct statements are :

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  4. Question 4

    Carbon and its Compounds. Asked once: 2024 (same type asked 3 times)

    22
    Write the formula and the molecular mass of the third homologue of alcohols. State how the boiling point of an alcohol changes as one moves from lower to higher homologues.

  5. Question 5

    Carbon and its Compounds. Asked once: 2023 (same type asked 3 times)

    7
    The correct representation of covalent bonding in an oxygen molecule is :

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