Get Class 10 Science Answer Key 2025 below
Hello Students,
Your Science paper for class 10 held today on 20.02.2025. Hope you did well in the exam. Here on cbsestudent.com, we are now providing you CBSE Class 10 Science Answer Key 2025 immediately after the exam. These are Answer Key of Science Paper Code 31/3/1 Set-1. The answer keys have been prepared with due care and to give you a chance to estimates your marks in this paper. Answer Keys have focused on Multiple Choice Question (MCQs) appeared in the question paper.
Q.1 Consider the following chemical equation……………….
Answer: Option (C) – 2,3,1,3
Q.2 Which of the given option represents a family of salts?
Answer: Option (B)- K2 SO4, Na2SO4, CaSO4
Q.3 The most common method of extraction of metals from their oxide ores is:
Answer: Option (A) – Reduction with carbon
Q.4 Given below are the structures……………………given options:
Answer: Option (C) – (ii) and (iii)
Q.5 Choose the incorrect statement about the common reaction used in hydrogenation of vegetable oils
Answer: Option (D) – It is an addition reaction which occurs in the presence of an acid catalyst.
Q.6 Match Column-I and Column-II………
Answer: Option (D) – a-iii, b-ii, c-i, d-iv
Q.7 The part of the brain which maintains the posture and balance of the body is:
Answer: Option (C) – Cerebellum
Q.8 The plant hormone present in greater concentration in the areas of rapidly dividing cells is:
Answer: Option (B) – Cytokinins
Q.9 Select a pair of bisexual flowers from the following:
Answer: Option (B) – Hibiscus and mustard
Q.10 The gastric glands present in the wall of the stomach release:
Answer: Option (C) – Mucus and Pepsin
Q.11 Absolute refractive index of water and glass is 4/3 and 3/2 respectively. If the speed of light in glass is 2 x 108 m/s, the speed of light in water is:
Answer: Option (A) – 9/4 m/s
Q.12 When a beam of white light passes through a region of very fine dust particles, the colour of light that scatters the most in that region is:
Answer: Option (C) – Blue
Q.13 A wire of length ‘l’ is gradually stretched so that its length increases to 3l. If its original resistance is R, then its new resistance will be:
Answer: Option (C) – 9R
Q.14 Which one of the following statements is not true about a bar magnet?
Answer: Option (D) – The direction of magnetic field lines inside a bar magnet is from its north pole to its south pole.
Q.15 The strength of magnetic field produced inside a long straight current carrying solenoid does not depend upon:
Answer: Option (B) – Direction of current flowing through the solenoid.
Q.16 Other than the abiotic components………………………………………………….
Answer: Option (D) – ii and iv
Q.17 Assertion (A): Hydrogen gas is not evolved when a metal reacts with nitric acid.
Reason (R): Nitric acid is a strong reducing agent and reduces the hydrogen produced in the reaction to water.
Answer: Option (C) – Assertion is true and Reason is false.
Q.18 Assertion (A): In our actions of writing or talking, our nervous system communicates with muscles
Reason (R): Cranial nerves and spinal nerves form the peripheral nervous system.
Answer: Option (B) – Both Assertion and Reason are true and Reason is not the correct explanation of Assertion.
Q.19 Assertion (A): Magnetic field lines around a bar magnet never intersect each other.
Reason (R): Magnetic field produced by a bar magnet is a quantity that has both magnitude and direction.
Answer: Option (A) – Both Assertion and Reason are true and Reason is the correct explanation of Assertion.
Q.20 Assertion (A): Use of jute bags for shopping reduces pollution.
Reason (R): Jute is biodegradable and its bag may be reused as and when needed.
Answer: Option (A) – Both Assertion and Reason are true and Reason is the correct explanation of Assertion.
We hope that you were greatly benefited from above answer keys for the Science Paper. Thank You.
You can give your feedback in comment section.
We have also uploaded Answer Keys for other papers for class 10 and 12. Check below links:
CBSE Class 10 English Answer Key 2025
CBSE Class 12 Physical Education Answer Key 2025