Nitrogen Cycle

Q. Nitrogen is a limiting nutrient for both natural and agricultural yield.

1. True
2. False

Q.

Which bacteria absorb atmospheric nitrogen and converts it into nitrate?

1. Bacilli

2. Rhizobium

3. Coccus

4. Spirilla

Q.

Why are ammonification and nitrification carried out in soil always?

Q.

How to identify Rhizobium?

Q.

The process of conversion of molecular nitrogen to ammonia or nitrogen oxides is known as ___.

1. nitrogen distillation
2. nitrogen conversion
3. nitrogen fixation
4. nitrogen formation

Q.

Which of the following process releases nitrogen back into the atmosphere?

1. Haber's Process

2. Kolbe's Process

3. Denitrification

4. Nitrification

Q. Soil is the source of many nutrients and minerals, nitrogen is one of the elements that is required by plants in different forms for their proper growth. Have you ever wondered where does this nitrogen in soil comes from?

1. plants add nitrogen to the soil through their roots by a process called nitrogen fixation.

2. micro-organisms add atmospheric nitrogen in the soil by a process called nitrogen fixation.

3. plants manufacture the nitrogen required by them by a process called nitrogen fixation.

4. soil itself absorbs nitrogen from the atmosphere by a process called nitrogen fixation.

Q.

Lightning produces a very high temperature which makes nitrogen and oxygen present in air combine to form an oxide.

1. True

2. False

Q.

Apart from carbon, hydrogen and oxygen, our body needs___also.

Q.

What are some inorganic granules occurring in bacteria?

Q.

Which of the following are properties of $N{H}_3$?

1. is basic and soluble in water
2. is basic and insoluble in water
3. is acidic and soluble in water
4. is acidic and insoluble in water

Q.

Which of the following condition is suitable for the formation of Nitric and Nitrogen Oxide?

1. Low temperature and Low pressure

2. Low temperature and High pressure

3. High temperature and Low pressure

4. High temperature and High pressure

Q.

Plants fix nitrogen to produce protein. This process is called___.

1. Nitrogen Fixation

2. Denitrification

3. Haber's Process

4. None of these

Q.

Which of the following are the solid forms of nitrogen taken up by plants?

1. Ammonium Ion

2. Nitrate Ion

3. Protein

4. Urea

Q.

Legume Plants are responsible for fixation of nitrogen by a biological method.

1. True

2. False

Q. How is urea manufactured?

Q.

Which part of a leguminous plant hosts Rhizobium?

1. Stems
2. Leaf Node
3. Roots
4. Leaves

Q. Conversion of free nitrogen into it's compounds is called .

1. nitrogen fixation
2. nitrification
3. assimilation

Q.

The process by which ammonia is synthetically manufactured is___.

1. Haber's Process

2. None of the above

3. Kolbe's Process

4. Electrolysis

Q. Which of the following is among the various properties of $N{H}_3$?

1. is acidic and soluble in water
2. is basic and insoluble in water
3. is basic and soluble in water
4. is acidic and insoluble in water

Q. converts atmospheric nitrogen into a form usable by plants.

1. Fungi
2. Rhizobium
3. Root