Class 10 Chapter 1

3. the name of the gas formed when zinc granules reacts with hydrochloric acid
5. the type of reaction that occurs when iron reacts with copper sulphate
6. the number of moles of magnesium used during the reaction of magnesium burning in oxygen
9. the name of the white solid formed when calcium hydroxide reacts with carbon dioxide
11. the term used to describe decomposition by electricity
12. the chemical name for the compounds commonly used for white washing
14. the colour of ferrous sulphate before decomposition
15. the gas produced when potassium chlorate is decomposed

1. the type of reaction that occurs when an acid and base form salt and water
2. the gas formed when hydrogen gas and chlorine gas react with each other
4. the colour of the residue after lead nitrate is decomposed
7. the colour of the residue after decomposition of ammonium dichromate
8. the solid product which separates out from the solution during a chemical reaction
10. the gas formed when nitrogen reacts with hydrogen
13. the type of reaction seen when there is an increase in the temperature of the reaction