How many zones through which the charge passes in a rotary kiln ?
A. 4
B. 3
C. 2
D. 5
Common Chemical Industries
Which of the following processes is used for the synthesis of cement ?
Which of the following processes is used for the synthesis of cement ?
A. dry process
B. wet process
C. both
D. none
Calcarious material includes_________________?
Calcarious material includes_________________?
A. lime stone
B. marble
C. chalk
D. all of the above
DAP (Diammonium hydrogen phosphate) contains ______________ plant nutrients?
DAP (Diammonium hydrogen phosphate) contains ______________ plant nutrients?
A. 60%
B. 65%
C. 70%
D. 75%
The cooling of molten urea by air in the tower is called______________________?
The cooling of molten urea by air in the tower is called______________________?
A. prilling
B. evaporation
C. condensation
D. crystallization
Addition of urea to the soil is ____________ reaction?
Addition of urea to the soil is ____________ reaction?
A. endothermic
B. exothermic
C. both a and b
D. no heat energy is involved
The fertilizers which provide single nutrient from NPK are called ___________ fertilizer?
The fertilizers which provide single nutrient from NPK are called ___________ fertilizer?
A. straight
B. compound
C. both a and b
D. none of the above
The fertility of the soil is improved by________________?
The fertility of the soil is improved by________________?
A. Rotation of the crops
B. Adding lime to the acid salts
C. Adding manure and growing legumes
D. All