Question

11. Three gases poisonous in nature. C 12. Two gases pre sent in the atmosphere and almost as heavy as air. 13. The term for the temperature at which - a] solids just change to liquids b] liquids just boil over & change to vapour 14. The term for - ability of a substance to - a] be hammered into sheets b] be drawn into wires. 14​

Answer 1

Answer:

11.  carbon monoxide, chlorine, nitrogen dioxide

12. nitrogen and oxygen

13. a] melting b]evaporation

14.  a]Malleability b]ductile

Explanation: