PYQ Vault

Day 167: CBSE Class 10 Science

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

  1. Question 1

    Carbon and its Compounds. Asked once: 2024 (same type asked 2 times)

    22
    Identify the functional group present in the following compounds and also name them : (a) Structure (a) as printed; see the attached figure. (b) Structure (b) as printed; see the attached figure.

  2. Question 2

    Chemical Reactions and Equations. Asked once: 2025 (same type asked 2 times)

    27
    Write balanced chemical equation for the reactions that occur when (a) steam is passed over red hot iron. (b) natural gas is burnt in air. (c) glucose reacts with oxygen in the cells of our body and provides energy.

  3. Question 3

    Life Processes. Asked once: 2025 (same type asked 2 times)

    7
    One-cell thick blood vessels are known as :

    Tap an option to check your answer.

  4. Question 4

    Magnetic Effects of Electric Current. Asked once: 2022 (same type asked 2 times)

    6 (a)
    (a) Name the poles P, Q, R and S of the magnets in the following figures ‘a’ and ‘b’ : (b) State the inference drawn about the direction of the magnetic field lines on the basis of these diagrams.

  5. Question 5

    Metals and Non-metals. Asked once: 2025 (same type asked 2 times)

    28 (b)
    (a) Show the formation of Aluminium Nitride (AlN) by the transfer of electrons. [ At. no. of Al = 13; At. no. of N = 7 ] (b) “Ionic compounds are solids and are generally brittle and break into pieces when pressure is applied.” Give reason to justify the statement.