Explore topic-wise MCQs in Testing Subject.

This section includes 657 Mcqs, each offering curated multiple-choice questions to sharpen your Testing Subject knowledge and support exam preparation. Choose a topic below to get started.

1.

An increase in the NH3/CO2 ratio in urea manufacture results in__________________?

A. Increased degree of conversion of CO2 to urea
B. Decreased degree of conversion of NH3 to urea
C. Decreased yield of urea
D. Decreased specific volume of molten mass
Answer» B. Decreased degree of conversion of NH3 to urea
Discussion
2.

Ammonium sulphate fertiliser is __________________?

A. The highest concentration nitrogenous fertiliser
B. The best fertiliser for paddy
C. A basic fertiliser
D. A neutral fertiliser
Answer» C. A basic fertiliser
Discussion
3.

Ammonium sulphate can be produced by reacting gypsum with____________________?

A. Ammonia
B. Ammonium carbonate
C. Nitric acid
D. None of these
Answer» C. Nitric acid
Discussion
4.

Ammonium phosphate is a _____________ fertiliser?

A. Nitrogenous
B. Phosphatic
C. Complex
D. Mixed
Answer» E.
Discussion
5.

Ammonium nitrate is___________________?

A. Having about 40% N2
B. Not hygroscopic
C. Not prone to explosive thermal decomposition
D. Mixed with limestone powder to reduce its explosive nature before using it as a fertilizer
Answer» E.
Discussion
6.

Ammonium nitrate (is mixed with limestone) is not used as fertiliser as such, because______________________?

A. It is hygroscopic and explosive in nature
B. It is highly acidic in nature
C. It is a liquid at room temperature
D. Its nitrogen content is very less
Answer» B. It is highly acidic in nature
Discussion
7.

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» D. Add extra nutrient as fertiliser
Discussion
8.

Ammonia synthesis reaction is______________________?

A. Exothermic
B. Endothermic
C. Autocatalytic
D. None of these
Answer» B. Endothermic
Discussion
9.

Ammonia synthesis gas is produced from natural gas by___________________?

A. Thermal cracking
B. Steam reforming
C. Partial oxidation
D. Hydrogenation
Answer» C. Partial oxidation
Discussion
10.

Ammonia synthesis gas is produced from fuel oil by _________________?

A. Steam reforming
B. Hydro-cracking
C. Partial oxidation
D. Hydrogenation
Answer» D. Hydrogenation
Discussion
11.

Action of phosphoric acid on rock phosphate produces_________________?

A. Superphosphate
B. Triple superphosphate
C. Nitrophosphate
D. Diammonium phosphate
Answer» C. Nitrophosphate
Discussion
12.

A Potassic fertiliser contains 50% K2O. It could be _________________?

A. Potassium sulphate
B. Potassium chloride
C. A mixture of NaCl + KCl
D. None of these
Answer» B. Potassium chloride
Discussion
13.

A phosphatic fertiliser contains 16% P2O5. It could be________________?

A. Dicalcium phosphate
B. Superphosphate
C. Triple superphosphate
D. None of these
Answer» C. Triple superphosphate
Discussion
14.

A nitrogenous fertiliser contains 20% N2. It could be_________________?

A. Ammonium nitrate
B. Calcium ammonium nitrate (CAN)
C. Urea
D. Ammonium chloride
Answer» C. Urea
Discussion
15.

A mixture of phosphate rock ______________ is heated in an electric furnace to produce phosphorous?

A. Salt & coke
B. Sand & coke
C. And coke
D. And sand
Answer» C. And coke
Discussion
16.

A fertiliser plant is classified as a gas based fertiliser plant, when it uses ______________ gas as a source of hydrogen for the manufacture of ammonia?

A. Coke oven
B. Producer
C. Natural
D. Coal
Answer» D. Coal
Discussion
17.

A fertiliser contains 82% N2. It could be_____________________?

A. Urea
B. Liquid NH3
C. Ammonium nitrate
D. None of these
Answer» C. Ammonium nitrate
Discussion