rmahanti

Work and Energy

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Question 1 What is the scientific definition of work? a) Any physical or mental activity b) Force applied with no displacement c) Force causing displacement in the direction of the force d) Movement of an object in any direction Answer: c) Force causing displacement in the direction of the force Explanation: In science, work is … Read more

Conservation of plants and animals

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Question 1 What is a habitat? a) A type of plant b) A kind of animal c) The natural environment where an organism lives d) A part of the human body Answer: c) The natural environment where an organism lives Explanation: A habitat is the natural environment where an organism lives, which includes both biotic … Read more

Sound

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Question 1 What causes the production of sound in various musical instruments? a) Electrical energy b) Mechanical vibrations c) Chemical reactions d) Light energy Answer: b) Mechanical vibrations Explanation: Sound in musical instruments is produced by mechanical vibrations. For instance, when a guitar string is plucked, it vibrates and creates sound. Question 2 In human … Read more

Growing up as Boys and Girls

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1) What was a key feature of children’s learning in Samoan society in the 1920s? a) Formal school education b) Learning through older children and adults c) Online educational programs d) Gender-segregated learning from an early age Answer: b) Learning through older children and adults Explanation: In Samoan society during the 1920s, children did not … Read more

Climate

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1) What is the main characteristic of India’s climate? a) Desert climate b) Equatorial climate c) Monsoon climate d) Mediterranean climate Answer: c) Monsoon climate Explanation: India’s climate is primarily described as a monsoon type, characterized by seasonal reversal in wind direction. 2) Which region in India experiences the highest diurnal range of temperature? a) … Read more

Gravitation

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Multiple Choice Questions (MCQs) 1) If the mass of Earth suddenly doubled, what would happen to the force of gravity between Earth and an object on its surface? (a) It would double (b) It would quadruple (c) It would halve (d) It would remain the same Soln: Answer is (a) It would double Explanation: The … Read more

Motion and Time

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1. Which of the following is an example of periodic motion? a) A car moving on a straight road. b) A pendulum swinging to and fro. c) A horse pulling a cart on a straight road. d) A train moving on a straight bridge. Answer: b) A pendulum swinging to and fro. Explanation: Periodic motion … Read more

Reproduction in Plants

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1. What is the main function of flowers in plants? a) To provide support b) To perform photosynthesis c) To reproduce d) To store food Answer: c) To reproduce Explanation: Flowers are the reproductive parts of plants and are responsible for reproduction. 2. Which of the following is an example of asexual reproduction in plants? … Read more

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