Role and use of nitrogen

Nitrogen is a _________ reactive gas.

• Highly

• Least

Nitrogen controls the combustion process

• True

• False

Nitrogen present in the air can be directly used by plants

• True

• False

Nitrogen in the atmosphere is converted in to oxides pf nitrogen to form_________

• Nitrous oxide

• Nitric acid

Nitric acid is formed by the reaction of oxides of nitrogen with _______ water

• Rain

• River

Bacteria that causes the biological fixation of nitrogen are present in _________ of legume plants.

• Stem

• Root

• Leaves

The bacteria fix nitrogen by

• Reduction

• Oxidation

• Both

After the biological fixation nitrogen is converted in to

• Nitric acid

• Nitrate ions

Nitrate ions are not water soluble

• True

• False

Plants use nitrate ions to form

• Sugars

• Proteins