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9th CBSE
IMPORTANT
Earn 100

'Ozone hole' means

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Important Questions on Natural Resources

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9th CBSE
IMPORTANT
Secondary Biology FIrst And Second Term of CLASS IX>Chapter 5 - Natural Resources>Multiple Choice Questions (MCQs)>Q 21
Ozone layer is getting depleted because of:
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9th CBSE
IMPORTANT
Secondary Biology FIrst And Second Term of CLASS IX>Chapter 5 - Natural Resources>Multiple Choice Questions (MCQs)>Q 22
Which of the following is a recently originated problem of environment?
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9th CBSE
IMPORTANT
Secondary Biology FIrst And Second Term of CLASS IX>Chapter 5 - Natural Resources>Multiple Choice Questions (MCQs)>Q 23
When we breathe in air, nitrogen also goes inside along with oxygen. What is the fate this nitrogen?
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9th CBSE
IMPORTANT
Secondary Biology FIrst And Second Term of CLASS IX>Chapter 5 - Natural Resources>Multiple Choice Questions (MCQs)>Q 24
Top-soil contains the following.
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9th CBSE
IMPORTANT
Secondary Biology FIrst And Second Term of CLASS IX>Chapter 5 - Natural Resources>Multiple Choice Questions (MCQs)>Q 25
Choose the correct sequence.
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9th CBSE
IMPORTANT
Secondary Biology FIrst And Second Term of CLASS IX>Chapter 5 - Natural Resources>Multiple Choice Questions (MCQs)>Q 26
The atmosphere of the earth is heated by radiations which are mainly
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9th CBSE
IMPORTANT
Secondary Biology FIrst And Second Term of CLASS IX>Chapter 5 - Natural Resources>Multiple Choice Questions (MCQs)>Q 27
If there were no atmosphere around the earth, the temperature of the earth will
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9th CBSE
IMPORTANT
Secondary Biology FIrst And Second Term of CLASS IX>Chapter 5 - Natural Resources>Multiple Choice Questions (MCQs)>Q 28
What would happen, if all the oxygen present in the environment is converted to ozone?