PYQ Vault

Day 66: CBSE Class 10 Science

5 questions (8 parts). Try each one first, then open its answer.

  1. Question 1 (case study, 4 parts)

    Life Processes. This type asked 2 times: 2024, 2026. This one: 2026

    Kidneys help to regulate the volume of fluid and various metabolites waste products in the body. Normally, kidney filter about 180 L of fluid daily but the volume actually excreted out is only a litre or two a day. Patients with kidney failures can be saved by dialysis and kidney transplant.
    15 (a)
    Write the structure and function of Bowman’s capsule.
    15 (b)
    Although kidneys filter a large amount (about 180 L daily) of fluids, still the excretion from the body is only about a litre or two. Why ?
    15 (c)
    What is excretion ? Why is it necessary for any living organism ?
    15 (c) OR
    State two similarities between lungs and kidneys.

  2. Question 2

    Life Processes. This type asked 2 times: 2023, 2026. This one: 2026

    Two statements are given, one labelled Assertion (A) and the other labelled Reason (R). Select the correct answer from the options given below.
    9
    Assertion (A) : The peristaltic movements occur all along the gut. Reason (R) : The lining of the gut has muscles that contract rhythmically to push the food in regulated manner.

    Tap an option to check your answer.

  3. Question 3

    Life Processes. This type asked 2 times: 2025, 2026. This one: 2026

    Two statements are given, one labelled Assertion (A) and the other labelled Reason (R). Select the correct answer from the options given below.
    8
    Assertion (A) : Arteries have valves as they have to withstand high pressure. Reason (R) : Arteries are vessels which carry blood away from the heart to various organs.

    Tap an option to check your answer.

  4. Question 4

    Life Processes. This type asked 2 times: 2023, 2026. This one: 2026

    10
    “Transpiration in plants is a necessary evil.” Comment on the statement giving two reasons.

  5. Question 5

    Magnetic Effects of Electric Current. This type asked 2 times: 2022, 2026. This one: 2026

    Two statements are given, one labelled Assertion (A) and the other labelled Reason (R). Select the correct answer from the options given below.
    32
    Assertion (A) : The needle of a compass, kept in an external magnetic field, always aligns itself in the North-South direction of the Earth. Reason (R) : The behaviour of the needle of the compass is similar to the behaviour of a freely suspended bar magnet.

    Tap an option to check your answer.