NCERT Exemplar Problems Class 7 Science – Wind, Storm and Cyclone Question 1: A fire alarm usually detects smoke in case of fire. Where should such an alarm be placed in a room? (a) Near the door (b) On the floor (c) On any wall (d) On the ceiling Answer: (d) In case of fire,…
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NCERT Exemplar Problems Class 7 Science – Weather, Climate & Adaptation of Animals to Climate Question 1: The maximum and minimum temperature displayed daily in the weather bulletin refers to the (a) highest day temperature and lowest night temperature of the day (b) highest day temperature and highest night temperature of the month (c) temperature…
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NCERT Exemplar Problems Class 7 Science – Physical and Chemical Changes Question 1: Which one of the following is a physical change? (a) Rusting of iron (b) Combustion of magnesium ribbon (c) Burning of candle (d) Melting of wax Answer: (d) Rusting, combustion and burning involve chemical changes. Melting of wax is a physical change.…
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NCERT Exemplar Problems Class 7 Science – Acids, Bases and Salts Question 1: The correct way of making a solution of acid in water is to (a) add water to acid (b) add acid to water (c) mix acid and water simultaneously (d) add water to acid in a shallow container Answer: (b) Making solution…
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NCERT Exemplar Problems Class 7 Science – Heat Question 1: A marble tile would feel cold as compared to a wooden tile on a winter morning because the marble tile (a) is a better conductor of heat than the wooden tile (b) is polished while wooden tile is not polished (c) reflects more heat than…
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NCERT Exemplar Problems Class 7 Science – Fibre to Fabric Question 1: The rearing of silkworms for obtaining silk is called (a) cocoon (b) silk (c) sericulture . (d) silviculture Answer: (c) Sericulture is a practice of rearing silkworms for obtaining silk while silviculture is a practice of developing and caring forests Question 2: Which…
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NCERT Exemplar Problems Class 7 Science – Nutrition in Animals Question 1: Given below from (i) to (iv) are some food items. (i) Boiled and mashed potato (ii) Glucose solution (iii) A slice of bread (iv) Mustard oil Which of the above will give blue-black colour when tested with iodine? (a) (i) and (ii) (b)…
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NCERT Exemplar Problems Class 7 Science – Nutrition in Plants Question 1: Organisms which prepare food for themselves using simple naturally available raw materials are referred to as (a) heterotrophs (b) autotrophs (c) parasites (d) saprophytes Answer: (b) Autotrophs are organisms that make food themselves from simple substances like water, C02 in the presence of…
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NCERT Exemplar Problems Class 8 Science The Department of Education in Science & Mathematics (DESM) & National Council of Educational Research & Training (NCERT) developed Exemplar Problems in Science and Mathematics for Upper Primary Stage, Secondary and Senior Secondary Classes with the objective to provide the students a large number of quality problems in various…
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NCERT Exemplar Problems Class 8 Science Chapter 18 Pollution of Air and Water Question1 Air is a mixture of various gases. One of the gas is 21% part of the air and is essential for the survival of human beings. This gas is (a) nitrogen (b) oxygen (c) ozone (d) argon Answer. (b) Oxygen makes…
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