EASY
Earn 100

Oxygen comprises 21% of the atmospheric gases.

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Important Questions on Biomolecules and Their Behaviour

EASY
Life Science>Levels of Organisation of Life>Biomolecules and Their Behaviour>Inorganic Compounds
About 20% of rainfall is lost due to evaporation.
EASY
Life Science>Levels of Organisation of Life>Biomolecules and Their Behaviour>Inorganic Compounds
NaCl is a salt that is made up of_____.
MEDIUM
Life Science>Levels of Organisation of Life>Biomolecules and Their Behaviour>Inorganic Compounds
Discuss briefly the functions and deficiency symptoms of Nitrogen, Sulphur, Phosphorus, Calcium, Potassium, Magnesium and lron in plant body.
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Life Science>Levels of Organisation of Life>Biomolecules and Their Behaviour>Inorganic Compounds
Tanks are a very important source of water in _____ India. (Western / Southern)
EASY
Life Science>Levels of Organisation of Life>Biomolecules and Their Behaviour>Inorganic Compounds
Why is water essential for our body?
EASY
Life Science>Levels of Organisation of Life>Biomolecules and Their Behaviour>Inorganic Compounds
What is the chemical composition of the atmosphere?
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Life Science>Levels of Organisation of Life>Biomolecules and Their Behaviour>Inorganic Compounds
Groundwater is used only for agriculture.
EASY
Life Science>Levels of Organisation of Life>Biomolecules and Their Behaviour>Inorganic Compounds

Fill in the blank. Choose the right word from the box.

 harmful  air exerts pressure  nitrogen  space  oxygen  mixture  no  weight

Air is a _____ of gases.

HARD
Life Science>Levels of Organisation of Life>Biomolecules and Their Behaviour>Inorganic Compounds
Hydroelectric power plants are constructed to produce electricity. Why do environmentalists oppose the construction of such plants on dams?
MEDIUM
Life Science>Levels of Organisation of Life>Biomolecules and Their Behaviour>Inorganic Compounds
The percent composition of nitrogen in air is
MEDIUM
Life Science>Levels of Organisation of Life>Biomolecules and Their Behaviour>Inorganic Compounds
The area from which water drains into a river or stream is its _____ area. (water divide/ catchment)
EASY
Life Science>Levels of Organisation of Life>Biomolecules and Their Behaviour>Inorganic Compounds
What are the various uses of water?
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Life Science>Levels of Organisation of Life>Biomolecules and Their Behaviour>Inorganic Compounds
Aerobic respiration requires oxygen.
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Life Science>Levels of Organisation of Life>Biomolecules and Their Behaviour>Inorganic Compounds
When surface water bodies get polluted, people turn to _____ to meet their needs. (groundwater/ potable water)
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Life Science>Levels of Organisation of Life>Biomolecules and Their Behaviour>Inorganic Compounds
Air is a mixture of gases.
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Life Science>Levels of Organisation of Life>Biomolecules and Their Behaviour>Inorganic Compounds
How does composition affect the atmosphere?
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Life Science>Levels of Organisation of Life>Biomolecules and Their Behaviour>Inorganic Compounds
Oxygen, nitrogen and carbon dioxide are gases.
EASY
Life Science>Levels of Organisation of Life>Biomolecules and Their Behaviour>Inorganic Compounds
The gas used to fill in the balloons is:
MEDIUM
Life Science>Levels of Organisation of Life>Biomolecules and Their Behaviour>Inorganic Compounds
Mark the incorrect match with respect to the concentration of atmospheric gases. 
EASY
Life Science>Levels of Organisation of Life>Biomolecules and Their Behaviour>Inorganic Compounds
What is the chemical name of the salt used in the kitchen?