HARD
8th CBSE
IMPORTANT
Earn 100

What are the advantages of an aneroid barometer over a mercury barometer? Give the applications of the aneroid barometer.

Important Questions on Air and Oxygen

HARD
8th CBSE
IMPORTANT
Pearson IIT Foundation Chemistry>Chapter 4 - Air and Oxygen>PRACTICE QUESTIONS (COMPETITION WING)>Q 52
Why are tin coated iron cans used for cool drinks but not galvanised iron cans? Explain.
HARD
8th CBSE
IMPORTANT
Pearson IIT Foundation Chemistry>Chapter 4 - Air and Oxygen>PRACTICE QUESTIONS (COMPETITION WING)>Q 53
LPG stove can be lighted by using an automatic gas lighter. Is it possible to light kerosene stove by using the same?
HARD
8th CBSE
IMPORTANT
Pearson IIT Foundation Chemistry>Chapter 4 - Air and Oxygen>PRACTICE QUESTIONS (COMPETITION WING)>Q 54
The combustion of sulphur and phosphorous is possible even in the presence of nitrous oxide and nitric oxide at high temperatures. Justify.
HARD
8th CBSE
IMPORTANT
Pearson IIT Foundation Chemistry>Chapter 4 - Air and Oxygen>PRACTICE QUESTIONS (COMPETITION WING)>Q 55
Is it possible to drink a soft drink by using a straw on the moon? Give reasons in support of your answer.
HARD
8th CBSE
IMPORTANT
Pearson IIT Foundation Chemistry>Chapter 4 - Air and Oxygen>PRACTICE QUESTIONS (COMPETITION WING)>Q 56
How do catalytic converters reduce air pollution?
HARD
8th CBSE
IMPORTANT
Pearson IIT Foundation Chemistry>Chapter 4 - Air and Oxygen>PRACTICE QUESTIONS (COMPETITION WING)>Q 57
A student was asked to prepare oxygen from KClO3 in a laboratory. After the experiment was over, he put the burner off immediately. What do you think happened then?
HARD
8th CBSE
IMPORTANT
Pearson IIT Foundation Chemistry>Chapter 4 - Air and Oxygen>PRACTICE QUESTIONS (COMPETITION WING)>Q 58
Water is not suitable to extinguish fire caused by petrol. Explain.
HARD
8th CBSE
IMPORTANT
Pearson IIT Foundation Chemistry>Chapter 4 - Air and Oxygen>PRACTICE QUESTIONS (COMPETITION WING)>Q 58
CNG is considered to be the cleanest automobile fuel. Give reason.