EASY
9th CBSE
IMPORTANT
Earn 100

Which of these nitrogen fixing bacteria play an important role in the nitrogen cycle?

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Important Questions on Natural Resources

MEDIUM
9th CBSE
IMPORTANT
Pearson IIT Foundation Biology>Chapter 7 - Natural Resources>PRACTICE QUESTIONS>Q 37
Which of the following statements are true for renewable sources of energy?
(i) These are derived from natural processes.
(ii) Most energy sources are fossil fuels.
(iii) It is a form of clean energy.
Select the correct option.
 
EASY
9th CBSE
IMPORTANT
Pearson IIT Foundation Biology>Chapter 7 - Natural Resources>PRACTICE QUESTIONS>Q 38
Identify the wrong statement/s from the following.
 
MEDIUM
9th CBSE
IMPORTANT
Pearson IIT Foundation Biology>Chapter 7 - Natural Resources>PRACTICE QUESTIONS>Q 39
Identify how are water vapours formed?
EASY
9th CBSE
IMPORTANT
Pearson IIT Foundation Biology>Chapter 7 - Natural Resources>PRACTICE QUESTIONS>Q 40
Which of the following makes use of CFCs?
EASY
9th CBSE
IMPORTANT
Pearson IIT Foundation Biology>Chapter 7 - Natural Resources>PRACTICE QUESTIONS>Q 41
Acid rain is caused by an increase in the atmosphere concentration of 
EASY
9th CBSE
IMPORTANT
Pearson IIT Foundation Biology>Chapter 7 - Natural Resources>PRACTICE QUESTIONS>Q 42
Maximum deposition of DDT will occur in 
MEDIUM
9th CBSE
IMPORTANT
Pearson IIT Foundation Biology>Chapter 7 - Natural Resources>PRACTICE QUESTIONS>Q 43
A lake with an inflow of domestic sewage rich in organic waste may result in
MEDIUM
9th CBSE
IMPORTANT
Pearson IIT Foundation Biology>Chapter 7 - Natural Resources>PRACTICE QUESTIONS>Q 44
Which of the following pair is mismatched?