Fertiliser Technology MCQs

Question 1

H 3 PO 4 is the chemical formula of __________ phosphoric acid.

Accepted Answer

Ortho

Answer

Pyro

Answer

Meta

Answer

None of these

Question 2

Tricresyl phosphate is chemically represented as

Accepted Answer

(CH 3 C 6 H 4 ) 3 PO 4

Answer

Ca 10 (PO 4 ) 3F 6

Answer

(NH 4 ) 2 HPO 4

Answer

NH 4 H 2 PO 4

Question 3

Chemical formula of metaphosphoric acid is

Accepted Answer

HPO 3

Answer

H 3 PO 4

Answer

H 4 P 2 O 7

Answer

Same as that of pyrophosphoric acid

Question 4

CO 2 present in reformed gas (obtained by steam reforming of naphtha) is removed by absorbing in

Accepted Answer

Mono-ethanolamine (MEA)

Answer

Slaked lime

Answer

Ammoniacal liquor

Answer

Methyl-Ethyl Ketone (MEK)

Question 5

Catalyst used in ammonia synthesis uses __________ as a promoter.

Accepted Answer

K 2 O

Answer

Pt

Answer

Al 2 O 3

Answer

Ni

Question 6

In the manufacture of H 3 PO 4 (ortho); strong H 2 SO 4 leaching wet process as compared to electric furnace process

Accepted Answer

Produces lower purity acid

Answer

Uses lower grade phosphate rock

Answer

Requires lower capital investment in the plant

Answer

Is very costly

Question 7

Sodium tri poly phosphate (STPP) is chemically represented as

Accepted Answer

Na 5 P 3 O 10

Answer

Na 4 P 3 O 8

Answer

Na 3 P 4 O 6

Answer

Na 2 PO 4

Question 8

(CH 3 C 6 H 4 ) 3 PO 4 is the chemical formula of

Accepted Answer

Tricresyl phosphate

Answer

Triple superphosphate

Answer

Flourapatite

Answer

Superphosphate

Question 9

Chemical formula of biuret is

Accepted Answer

NH 2 CONHCONH 2

Answer

NH 2 .CO.NH 2

Answer

NH 3 .COO.NH 3

Answer

NH 4 COONH 2