class 7 Science

Q.1. True or False (i) The SI unit of speed is kilometre per hour. (ii) Candle clocks were used to measure time […]

Q.1. True/False (i) Metals are poor conductors of heat. (i) Land breeze occurs during the night. (i) Dark-colored clothes absorb less heat than

Q1: What is the main reason for the development of pimples during adolescence? a) ​Lack of sleep b) Increase in oily secretions

Q.1. True/False (i) Rusting of iron is a physical change. (ii) Evaporation of water is a reversible change. (iii) All physical changes are

Q1: Which metal is commonly used to make food packaging materials as it is cheaper, and its thin sheets can

Q.1. True/False (i) The human body is a good conductor of electricity. (ii) An incandescent lamp will not glow if connected with

Q.1. True/False (i) Nitric acid turns red litmus blue. (ii) Sodium hydroxide turns blue litmus red. (iii) Sodium hydroxide and

Multiple Choice Questions Q1: What is the primary goal of science as mentioned in the chapter? a) To memorize facts

Q1: In Fig. 12.17, how many hours of sunlight do the North Pole and the South Pole receive during one

Q1: Which of the following are luminous objects? Ans:  Luminous objects- Sun, Pole Star, and Venus are luminous objects because they emit