PYQ Vault

Day 219: CBSE Class 10 Science

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

  1. Question 1

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

    7 (b)
    (a) What is meant by garbage ? List two classes into which garbage is classified. (b) What do we actually mean when we say that the “enzymes are specific in their action” ?

  2. Question 2

    Electricity. Asked once: 2022 (same type asked 4 times)

    13 OR
    Study the following circuit and find : (i) Effective resistance of the circuit (ii) Current drawn from the battery (iii) Potential difference across the 5 Ω\Omega resistor

  3. Question 3

    How do Organisms Reproduce?. Asked once: 2023 (same type asked 4 times)

    12
    Select the INCORRECT match (between the plant and its vegetative part) from the following :

    Tap an option to check your answer.

  4. Question 4

    Life Processes. Asked once: 2023 (same type asked 4 times)

    29 (A)
    (i) How does Paramecium obtain its food ? (ii) List the role of each of the following in our digestive system : (a) Hydrochloric acid (b) Trypsin (c) Muscular walls of stomach (d) Salivary amylase

  5. Question 5

    Light — Reflection and Refraction. Asked once: 2023 (same type asked 4 times)

    30 (B)
    Define the following terms in the context of a diverging lens : (i) Principal focus, (ii) Focal length. Draw a labelled ray diagram to illustrate your answer.