hpas 2025 science

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HPAS 2025 Science Topic-Wise Solutions

HPAS 2025 Science Topic-Wise Solutions

📌 Topic Index
Q14. Metamorphosis Q33. Magnets Q34. Inertia & Friction Q54. pH Scale Q60. Audible Range Q74. Mirrors, Lenses & Light Q93. Sheep Breeds Q94. Digestive System
Question 14

A tadpole develops into an adult frog by the process of:

  • (A) Fertilisation
  • (B) Metamorphosis
  • (C) Embedding
  • (D) Budding
Correct Answer: (B) Metamorphosis
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Question 33

Given below are two statements:

Statement I: Magnetite is a natural magnet.
Statement II: A freely suspended magnet always aligns in N-S direction.

In the light of the above statements, choose the most appropriate answer:

  • (A) Both Statement I and Statement II are correct
  • (B) Both Statement I and Statement II are incorrect
  • (C) Statement I is correct and Statement II is incorrect
  • (D) Statement I is incorrect and Statement II is correct
Correct Answer: (A) Both Statement I and Statement II are correct
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Question 34

Given below are two statements:

Statement I: The mass of an object is a measure of its inertia.
Statement II: Force of friction always opposes motion of objects.

In the light of the above statements, choose the most appropriate answer:

  • (A) Both Statement I and Statement II are correct
  • (B) Both Statement I and Statement II are incorrect
  • (C) Statement I is correct and Statement II is incorrect
  • (D) Statement I is incorrect and Statement II is correct
Correct Answer: (A) Both Statement I and Statement II are correct
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Question 54

Arrange the following substances in increasing order of their pH value:

(1) Gastric Juice
(2) Milk of Magnesia
(3) Lemon Juice
(4) Pure Water

  • (A) (1), (2), (3), (4)
  • (B) (4), (3), (2), (1)
  • (C) (3), (4), (1), (2)
  • (D) (1), (3), (4), (2)
Correct Answer: (D) (1), (3), (4), (2)
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Question 60

What is the audible range of sound for the average human ear?

  • (A) 20 Hz to 20 kHz
  • (B) 0 Hz to 20 Hz
  • (C) 20 kHz to 50 kHz
  • (D) 50 kHz to 1 MHz
Correct Answer: (A) 20 Hz to 20 kHz
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Question 74

Consider the following statements:

(1) A concave mirror always forms a real image.
(2) A real image cannot be obtained on a screen.
(3) A concave lens always form a virtual image.
(4) White light is composed of seven colours.

  • (A) (1) and (2) only
  • (B) (2) and (4) only
  • (C) (3) and (4) only
  • (D) (1) and (3) only
Correct Answer: (C) (3) and (4) only
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Question 93

Match List I with List II:

List-I (Indian Breed of Sheep):
(a) Patanwadi
(b) Bakharwal
(c) Rampur Bushair
(d) Lohi

List-II (State where found):
(i) Rajasthan
(ii) Jammu & Kashmir
(iii) Gujarat
(iv) Himachal Pradesh

  • (A) (i) (ii) (iii) (iii)
  • (B) (iii) (ii) (iv) (i)
  • (C) (iii) (ii) (iv) (i)
  • (D) (iii) (iii) (iv) (i)
Correct Answer: (C) (iii) (ii) (iv) (i)
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Question 94

Match List I with List II:

List-I (Function):
(a) Absorption of food
(b) Killing of bacteria
(c) Chewing of food
(d) Formation of faeces

List-II (Part of digestive canal):
(i) Stomach
(ii) Large intestine
(iii) Small intestine
(iv) Buccal cavity

  • (A) (iii) (i) (iv) (ii)
  • (B) (i) (iii) (ii) (iv)
  • (C) (iii) (iv) (ii) (i)
  • (D) (iii) (ii) (i) (iv)
Correct Answer: (A) (iii) (i) (iv) (ii)
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