Fertiliser Technology MCQs

Question 1

Catalyst used in Haber's process for ammonia production is

Accepted Answer

Reduced iron oxide

Answer

Nickel

Answer

Vanadium pentoxide

Answer

Silica gel

Question 2

Chemical formula of biuret is

Accepted Answer

NH2CONHCONH2

Answer

NH2.CO.NH2

Answer

NH3.COO.NH3

Answer

NH4COONH2

Question 3

Action of phosphoric acid on rock phosphate produces

Accepted Answer

Triple superphosphate

Answer

Superphosphate

Answer

Nitrophosphate

Answer

Diammonium phosphate

Question 4

Calcium ammonium nitrate (CAN) is

Accepted Answer

A complex fertiliser

Answer

A mixed fertiliser

Answer

A straight fertiliser

Answer

Not a fertiliser ; it is an explosive

Question 5

Which of the following gasifiers can be attached to coal based fertiliser plants?

Accepted Answer

Kopper-Totzek gasifier

Answer

Lurgi (high pressure) gasifier

Answer

Gasifier working at 20 atm

Answer

Gasifier working at 40 atm

Question 6

A phosphatic fertiliser contains 16% P2O5. It could be

Accepted Answer

Superphosphate

Answer

Dicalcium phosphate

Answer

Triple superphosphate

Answer

None of these

Question 7

Though liquid ammonia itself is a fertiliser (with 82% nitrogen content) yet it is commonly not used as such in a tropical country like India, because it

Accepted Answer

Vaporises at normal temperature

Answer

Has a pungent smell

Answer

Is toxic and highly corrosive

Answer

Is in short supply

Question 8

Catalytic ammonia synthesis reaction as in Haber's process is

Accepted Answer

Exothermic

Answer

Endothermic

Answer

Irreversible

Answer

None of these

Question 9

In ammonia synthesis (N2 + 3H2 = 2NH3), there is a decrease in total volume, hence to get high equilibrium conversion, the reaction should be carried out at

Accepted Answer

High pressure

Answer

Low pressure

Answer

Very high temperature

Answer

Atmospheric pressure; as the pressure has no effect on conversion