Match Column - I with Column - II. List-I List-II (a) Nitrococcus (i) Denitrification (b) Rhizobium (ii) Conversion of ammonia to nitrite (c) Thiobacillus (iii) Conversion of nitrite to nitrate (d) Nitrobacter (iv) Conversion of atmospheric nitrogen to ammonia Choose the correct answer from options given below.

( a ) - ( ii ) ; ( b ) - ( iv ) ; ( c ) - ( i ) ; ( d ) - ( iii )

( a ) - ( i ) ; ( b ) - ( ii ) ; ( c ) - ( iii ) ; ( d ) - ( iv )

( a ) - ( iii ) ; ( b ) - ( i ) ; ( c ) - ( iv ) ; ( d ) - ( ii )

( a ) - ( iv ) ; ( b ) - ( iii ) ; ( c ) - ( ii ) ; ( d ) - ( i )

Convert free nitrogen to nitrogen compounds

Reduce nitrates to free nitrogen

MEDIUM

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Conversion of nitrates to nitrogen is called

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Important Questions on Inorganic Chemistry in the Laboratory and in Industry

EASY

Physical Science>Chemistry>Inorganic Chemistry in the Laboratory and in Industry>Nitrogen

Write the name of the compound which is formed by the reaction of nitrogen with magnesium metal at high temperature.

EASY

Physical Science>Chemistry>Inorganic Chemistry in the Laboratory and in Industry>Nitrogen

Nitrogen Cycle is affected due to human activities - State two phenomena to justify it.

EASY

Physical Science>Chemistry>Inorganic Chemistry in the Laboratory and in Industry>Nitrogen

Relate the following phenomena with the trend of disturbance in Nitrogen Cycle resulting from different human activities:

Global Warming
Acidification of soil and water of river and lake

EASY

Physical Science>Chemistry>Inorganic Chemistry in the Laboratory and in Industry>Nitrogen

Write, with balanced chemical equation, what happens when nitrogen gas is passed over calcium carbide heated at

1100 ° C

MEDIUM

Physical Science>Chemistry>Inorganic Chemistry in the Laboratory and in Industry>Nitrogen

Match Column - I with Column - II.

List-I		List-II
(a)	Nitrococcus	(i)	Denitrification
(b)	Rhizobium	(ii)	Conversion of ammonia to nitrite
(c)	Thiobacillus	(iii)	Conversion of nitrite to nitrate
(d)	Nitrobacter	(iv)	Conversion of atmospheric nitrogen to ammonia

Choose the correct answer from options given below.

EASY

Physical Science>Chemistry>Inorganic Chemistry in the Laboratory and in Industry>Nitrogen

In the first step of fixation of Nitrogen, which of the following compounds is formed as a result of lightning?

HARD

Physical Science>Chemistry>Inorganic Chemistry in the Laboratory and in Industry>Nitrogen

Show the steps of a nitrogen cycle with the help of a flow chart.

HARD

Physical Science>Chemistry>Inorganic Chemistry in the Laboratory and in Industry>Nitrogen

In the laboratory preparations of nitrogen, aqueous solutions of which compound is mixed with an aqueous solution of ammonium chloride and heated?

MEDIUM

Physical Science>Chemistry>Inorganic Chemistry in the Laboratory and in Industry>Nitrogen

Assertion (A):- Some plants growing in $N_{2}$ rich soils can obtain their nitrogen from insects.

Reason R): - Bacteria inhabiting the root system of Fabaceae plants can fix atmosphere nitrogen.

The correct option among the following is:

EASY

Physical Science>Chemistry>Inorganic Chemistry in the Laboratory and in Industry>Nitrogen

Study the following illustration of nitrogen cycle and identify $A, B$ and $C$ in it.
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MEDIUM

Physical Science>Chemistry>Inorganic Chemistry in the Laboratory and in Industry>Nitrogen

Draw a line diagram of the nitrogen cycle.

MEDIUM

Physical Science>Chemistry>Inorganic Chemistry in the Laboratory and in Industry>Nitrogen

Assertion $(A) :$ Free-living bacteria such as Rhizobium and Frankia can help in the biological fixation of dinitrogen in the roots of angiospermous plants.

Reason $(R) :$ Prokaryotes exclusively contain nitrogenase enzyme which can catalyze the oxidation reaction of dinitrogen to glutamate.

The correct answer is:

EASY

Physical Science>Chemistry>Inorganic Chemistry in the Laboratory and in Industry>Nitrogen

Select the mismatched pair from the following,

EASY

Physical Science>Chemistry>Inorganic Chemistry in the Laboratory and in Industry>Nitrogen

The nitrogen cycle is given below. Identify A and B in it.

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