All Exam Important Question Part:-01
1) Which Y is required in the production of carbonic acid? Answer: Carbon dioxide
2) What is the molecular formula of carbonic acid? Answer: H2CO3
3) What is the chemical name of washing soda? Answer: Sodium carbonate
4) What is the chemical name of baking soda?
Answer: Sodium bicarbonate
5) What is the chemical formula of baking soda?
Answer: NaHCO3
6) What is the chemical formula of washing soda?
Answer: Na2CO3
7) Which gas makes limestone water milky?
Answer: Carbon dioxide
8) Which gas is dissolved in cold drinks like soda water?
Answer: Carbon dioxide
9) What is the solid form of carbon dioxide called?
Answer: Dry ice
10) What is the chemical name of marble?
Answer: Calcium carbonate
11) What can be used instead of calcium carbonate to make carbon dioxide gas?
Answer: Sodium carbonate
12) Which gas is the lightest gas?
Answer: Hydrogen
13) Which gas is combustible?
Answer: Hydrogen
14) Which physical property is true for hydrogen?
Ans: Combustible
15) Which gas is used as fuel and to get electricity?
Answer: Hydrogen
16) Which gas is useful in a balloon used to study the atmosphere above the air?
Answer: Hydrogen
17) Which gas is produced by heating a solution of ammonium chloride and sodium nitrite?
Answer: Nitrogen
18) What happens when nitrogen dioxide is treated with gaseous water?
Answer: Nitric acid
19) Which gas reduces the activity of oxygen in air?
Answer: Nitrogen
20) Which gas is used to create an inert atmosphere?
Answer: Nitrogen