PYQ Vault

Day 144: 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)

    14
    An electric bulb is connected to a power supply of 220 V. If the current drawn by the bulb from the supply is 500 mA, the power of the bulb is :

    Tap an option to check your answer.

  2. Question 2

    Magnetic Effects of Electric Current. Asked once: 2024 (same type asked 5 times)

    32
    (a) How is a solenoid prepared ? Differentiate between a circular coil and a solenoid. (b) Draw the pattern of the magnetic field lines inside a current carrying solenoid. What does this pattern indicate ?

  3. Question 3

    Magnetic Effects of Electric Current. Asked once: 2024 (same type asked 5 times)

    26
    (i) Two magnetic field lines do not intersect each other. Why ? (ii) How is a uniform magnetic field in a given region represented ? Draw a diagram in support of your answer.

  4. Question 4

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

    16
    Human activities that are affecting the environment are :

    Tap an option to check your answer.

  5. Question 5

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

    28
    Why is the conversion of ethanol to ethanoic acid an oxidation reaction ? Name the oxidising agent used in this conversion. Write chemical equation for this oxidation reaction. How is this reaction different from the reaction in which ethanol burns in the presence of oxygen ?