Class 10 Chemistry Chapter 3 - Metals and Non Metals Important Questions
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Class 10 - Metals and Non metals Most important questions:- Q 1 .Write the 5 properties of metals with examples. Answer :- • Metals are lustrous. E.g - Silver • Metals are Good Conductor of heat . E.g - Silver and copper. • Metals are Ductile . E.g - Gold • Metals are malleable. E.g - Gold and Silver • Metals are Hard . E.g - chromium Q2 . Which of the Following non metal is Lustrous :- a) Carbon b) Iodine c) Chlorine d) Graphite Answer - b) Iodine Q3. Which metal remains in liquid form at room temperature ? Answer - Mercury Q4. Which Non metal is best conductor of electricity? Answer - Graphite Q5 .Which Non metal is best conductor of heat ? Answer - Diamond Q6. Generally, when metals are treated with mineral acids, hydrogen gas is liberated, but when metals (except Mn and Mg) are treated with HNO3, hydrogen is not liberated. Why? Answer: Most metals do not react with HNO3 because nitric acid is ...