Rajesh

Samacheer Book Back Questions And Answers For Science Standard 8 “Chemistry in Everyday Life“ I. Choose the best answer:1. The chemical mixed with LPG that helps in the detection of its leakage is _____.a. methanolb. ethanolc. camphord. mercapton 2. Which is…

Samacheer Book Back Questions And Answers For Science Standard 8 “Acids and Bases“ I. Choose the best answer: 1. Acids are _____ in taste. a) sour b) sweet c) bitter d) salty 2. Aqueous solutions of _____ conduct electricity. a) acid…

Samacheer Book Back Questions And Answers For Science Standard 8 “Water“ I. Choose the correct answer: 1. Water changes to ice at a) 0ºC b) 100ºC c) 102ºC d) 98ºC 2. Solubility of carbon dioxide in water is high when…

Samacheer Book Back Questions And Answers For Science Standard 8 “Atomic Structure“ I. Choose the best answer: 1. The same proportion of carbon and oxygen in the carbon dioxide obtained from different sources proves the law of _____. a) reciprocal…

Samacheer Book Back Questions And Answers For Science Standard 8 “Air“ I. Choose the best answer: 1. Which of the following is true about oxygen? a) Completely burning gas b) Partially burning gas c) Doesn’t support burning d) Supports burning…

Samacheer Book Back Questions And Answers For Science Standard 8 “Changes Around Us“ I. Choose the best answer: 1. Burning of paper is a _____ change. a) physical b) chemical c) physical and chemical d) neutral 2. Burning of matchstick is…

Samacheer Book Back Questions And Answers For Science Standard 8 “Matter Around Us“ I. Choose the best answer: 1. The liquid metal used in thermometers is a) copper b) mercury c) silver d) gold 2. The pictorial symbol for water given…

Samacheer Book Back Questions And Answers For Science Standard 8 “Universe and Space Science“ I. Choose the best answer: 1. Which of the following is a celestial body? a) Sun b) Moon c) Stars d) All the above 2. Mangalyaan…

Samacheer Book Back Questions And Answers For Science Standard 8 “Magnetism“ I. Choose the best answer: 1. A magnet attracts _____. a) wooden materials b) any metal c) copper d) iron and steel 2. One of the following is an example…

Samacheer Book Back Questions And Answers For Science Standard 8 “Sound“ I. Choose the best answer:1. Sound waves travel very fast ina. airb. metalsc. vacuumd. liquids 2. Which of the following are the characteristics of vibrations?i. Frequencyii. Time periodiii. Pitchiv. Loudness…