Fertiliser Technology - Section 1 (5)

Directions to Solve

Fertiliser Technology - Section 1

Fertilizer technology is a field and there are many problematic
MCQs available in this section which are related to this field. You can solve to test your aptitude
level in this field.

33.

Base suspension fertiliser essentially contains

A.	13% N2 and 43% P2O5
B.	43% N2 and 13% P2O5
C.	43% N2 and 13% K2O
D.	43% K2O and 43% P2O5

Answer: Option A

Explanation:

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34.

Phosphoric acid is produced in wet process from phosphate rock and

A.	dilute H2SO4
B.	concentrated H2SO4
C.	concentrated NHO3
D.	concentrated HCl

Answer: Option A

Explanation:

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35.

Reaction of dilute sulphuric acid with phosphate rock produces

A.	phosphoric acid
B.	superphosphate
C.	triple superphosphate
D.	gypsum

Answer: Option A

Explanation:

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36.

Action of phosphoric acid on rock phosphate produces

A.	superphosphate
B.	triple superphosphate
C.	nitrophosphate
D.	diammonium phosphate

Answer: Option B

Explanation:

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37.

Ammonium nitrate (a fertiliser) is coated with limestone powder to

A.	increase its nitrogen content.
B.	cut down its production cost.
C.	avoid the risk of explosion.
D.	add extra nutrient as fertiliser.

Answer: Option C

Explanation:

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38.

Pick out the wrong statement.

A.	'Green acid' is the other name of phosphoric acid produced by the reaction of phosphate rock & sulphuric acid.
B.	Chemically unreactive nature of red phosphorous is due to its polymeric structure.
C.	Red phosphorous is the most reactive allotropic form of phosphorous.
D.	Red phosphorous, which is used in the manufacture of safety matches, is converted into white phosphorous by vaporisation followed by condensation.

Answer: Option C

Explanation:

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39.

Hydrogen content of coke oven gas is __________ percent.

A.	4
B.	22
C.	58
D.	84

Answer: Option C

Explanation:

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40.

During conversion of ammonium carbamate into urea, presence of large excess of water

A.	increases the yield of urea.
B.	adversely affects the yield of urea.
C.	reduces the evaporator load by diluting the urea solution.
D.	does not affect the yield of urea.

Answer: Option B

Explanation:

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