MEDIUM
7th CBSE
IMPORTANT
Earn 100

SI unit of atmospheric pressure is: 
 

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Important Questions on Air and Oxygen

MEDIUM
7th CBSE
IMPORTANT
Pearson IIT Foundation Chemistry>Chapter 4 - Air and Oxygen>PRACTICE QUESTIONS (COMPETITION WING)>Q 33
Which among the following gas was called acid formerly? 
MEDIUM
7th CBSE
IMPORTANT
Pearson IIT Foundation Chemistry>Chapter 4 - Air and Oxygen>PRACTICE QUESTIONS (COMPETITION WING)>Q 34
Ozone present in plays a vital role in protecting the life on earth surface from harmful UV rays. 
 
MEDIUM
7th CBSE
IMPORTANT
Pearson IIT Foundation Chemistry>Chapter 4 - Air and Oxygen>PRACTICE QUESTIONS (COMPETITION WING)>Q 35
Which among the following metals is used in alloying of iron to prevent corrosion? 
MEDIUM
7th CBSE
IMPORTANT
Pearson IIT Foundation Chemistry>Chapter 4 - Air and Oxygen>PRACTICE QUESTIONS (COMPETITION WING)>Q 36
Fountain ink pen leaks at higher altitudes. It is due to: 
MEDIUM
7th CBSE
IMPORTANT
Pearson IIT Foundation Chemistry>Chapter 4 - Air and Oxygen>PRACTICE QUESTIONS (COMPETITION WING)>Q 37
The holes in the ozonosphere is due to the attack of a pollutant that is released from: 
MEDIUM
7th CBSE
IMPORTANT
Pearson IIT Foundation Chemistry>Chapter 4 - Air and Oxygen>PRACTICE QUESTIONS (COMPETITION WING)>Q 38
Which of the following phenomenon is an effect of acid rain? 
MEDIUM
7th CBSE
IMPORTANT
Pearson IIT Foundation Chemistry>Chapter 4 - Air and Oxygen>PRACTICE QUESTIONS (COMPETITION WING)>Q 39
Identify the substance which does not continue to burn in an atmosphere of N2.  
 
HARD
7th CBSE
IMPORTANT
Pearson IIT Foundation Chemistry>Chapter 4 - Air and Oxygen>PRACTICE QUESTIONS (COMPETITION WING)>Q 40
A gas is collected by the upward displacement of air but cannot be collected either downward or upward displacement of water. Identify the probable characteristics of the gas.