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41.

Nitrolime is

A.	colcium cyanamide	B.	calcium ammonium nitrate
C.	a mixture of urea and ammonium nitrate	D.	a mixture of ammonium nitrate and ammonium chloride

42.

The nitrogen content of clacium ammonium nitrate (CAN) is about

A.	25% N	B.	35% N
C.	46% N	D.	82 % N

43.

Raw materials for the manufacture of ammonium nitrate are

A.	liquid ammonia and air	B.	liquid ammonia 60% nitric acid and clay (diatomaceous earth kieselgur)
C.	anhydrous ammonia and nitrous acid	D.	liquid ammonia and 98% sulphuric acid

44.

Ammonium nitrate is manufactured by

A.	the oxidation of ammnia	B.	reacting liquid ammonia and 60% nitric acid
C.	the oxidation of 60% nitric acid	D.	reacting liquid ammonia and 98% sulphuric acid

45.

Ammonium nitrate is made by reacting liquid ammonia and 60% nitric acid. The reaction is

A.	endothermic	B.	exothermic
C.	catalytic	D.	reversible

46.

Select the wrong statement

A.	Ammonia ritrate is hygroscopic	B.	Ammonia nitrate is extremely reactive with combustible materials
C.	Ammonium nitrate is insensitive to explosive decomposition	D.	Ammonium nitrate product is coated with clay such as diatomaceous earth kieselgur

47.

The nitrogen content is minimum in

A.	ammonium sulphate	B.	nitrolime
C.	ammonium chloride	D.	ammonium nitrate

48.

When calcium carbide is heated with nitrogen the product obtained is

A.	Ca3N2	B.	Ca(CN)2
C.	CaCN2	D.	Ca(CNO)2

49.

Nitrolime is used as nitrogenous fertilizer. Its composition is

A.	Ca3N2	B.	Ca(CN)2
C.	CaCN2	D.	CaCN2 + C

50.

Which of the following is used as a micronutrient in agriculture?

A.	Zinc sulphate	B.	Magnesium sulphate
C.	Sodium sulphate	D.	Copper sulphate