PYQ Vault

Day 110: CBSE Class 10 Science

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

  1. Question 1

    Electricity. Asked once: 2025 (same type asked 5 times)

    13
    An electric bulb is rated 220 V; 11W. The resistance of its filament when it glows with a power supply of 220 V is :

    Tap an option to check your answer.

  2. Question 2

    Magnetic Effects of Electric Current. Asked once: 2025 (same type asked 5 times)

    36 (b)
    Why can’t two magnetic field lines cross each other ? Draw magnetic field lines showing the direction of the magnetic field due to a current carrying long straight solenoid. State the conclusion which can be drawn from the pattern of magnetic field lines inside the solenoid. Name any two factors on which the magnitude of the magnetic field due to this solenoid depends.

  3. Question 3

    Magnetic Effects of Electric Current. Asked once: 2025 (same type asked 5 times)

    14
    Which one of the following statements is not true about a bar magnet ?

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  4. Question 4

    Our Environment. Asked once: 2026 (same type asked 5 times)

    12
    Suggest two ways of dealing with waste generated at home.

  5. Question 5

    Carbon and its Compounds. Asked once: 2024 (same type asked 4 times)

    28
    Write chemical equations for the following reactions, giving the conditions for the reaction in each case : (a) Reaction of ethanol with ethanoic acid (b) Reaction of an ester with a base (NaOH) (c) Formation of ethene from ethanol