EASY
7th ICSE
IMPORTANT
Earn 100

_____ is the most abundant inert gas present in the air.

Important Questions on Air and Atmosphere

EASY
7th ICSE
IMPORTANT
Concise Chemistry Middle School for Class 7>Chapter 7 - Air and Atmosphere>OBJECTIVE TYPE QUESTIONS>Q 1
Oxides of sulphur and nitrogen combine with rain water to form _____ and _____ which cause _____.
EASY
7th ICSE
IMPORTANT
Concise Chemistry Middle School for Class 7>Chapter 7 - Air and Atmosphere>OBJECTIVE TYPE QUESTIONS>Q 1
_____ and _____ are most common air pollutants.
EASY
7th ICSE
IMPORTANT
Concise Chemistry Middle School for Class 7>Chapter 7 - Air and Atmosphere>OBJECTIVE TYPE QUESTIONS>Q 1
_____ discovered the oxygen gas.
EASY
7th ICSE
IMPORTANT
Concise Chemistry Middle School for Class 7>Chapter 7 - Air and Atmosphere>OBJECTIVE TYPE QUESTIONS>Q 1
Oxygen occupies about _____ of air by volume.
EASY
7th ICSE
IMPORTANT
Concise Chemistry Middle School for Class 7>Chapter 7 - Air and Atmosphere>OBJECTIVE TYPE QUESTIONS>Q 1
Fuel when used releases the least amount of pollutants in the air. 
EASY
7th ICSE
IMPORTANT
Concise Chemistry Middle School for Class 7>Chapter 7 - Air and Atmosphere>OBJECTIVE TYPE QUESTIONS>Q 2
The natural way of adding oxygen to air which involves green plants is called
EASY
7th ICSE
IMPORTANT
Concise Chemistry Middle School for Class 7>Chapter 7 - Air and Atmosphere>OBJECTIVE TYPE QUESTIONS>Q 3
Which one of the following is most likely to be corroded?
EASY
7th ICSE
IMPORTANT
Concise Chemistry Middle School for Class 7>Chapter 7 - Air and Atmosphere>OBJECTIVE TYPE QUESTIONS>Q 4
The process by which oxidation of food in our body takes place is