PYQ Vault

Day 215: CBSE Class 10 Science

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

  1. Question 1

    Metals and Non-metals. Asked once: 2024 (same type asked 3 times)

    27 (b)
    A student is working in a laboratory with metal ‘E’ which is stored under kerosene oil. Some how a small piece of this metal falls in a beaker containing water and starts burning. (i) Name the metal ‘E’. (ii) Write chemical equation for the reaction when metal ‘E’ reacts with water. State the nature (acidic/basic/neutral) of the product obtained. (iii) Name the process by which this metal ‘E’ is obtained from its molten chloride.

  2. Question 2

    Electricity. Asked once: 2024 (same type asked 3 times)

    14
    In the given circuit the total resistance between X and Y is :

    Tap an option to check your answer.

  3. Question 3

    Light — Reflection and Refraction. Asked once: 2023 (same type asked 3 times)

    31 (a)
    A student has focussed the image of an object of height 3 cm on a white screen using a concave mirror of focal length 12 cm. If the distance of the object from the mirror is 18 cm, find the values of the following : (i) Distance of the image from the mirror (ii) Height of the image

  4. Question 4

    Magnetic Effects of Electric Current. Asked once: 2022 (same type asked 5 times)

    6 (b)
    (i) What is a solenoid ? (ii) Draw the pattern of magnetic field lines of the magnetic field produced by a solenoid through which a steady current flows.

  5. Question 5

    Our Environment. Asked once: 2022 (same type asked 5 times)

    1 (a)
    Kulhads (disposable cups made of clay) and disposable paper cups both are used as an alternative for disposable plastic cups. Which one of these two can be considered as a better alternative to plastic cups and why ?