Nylon 66 is obtained by heating___________________?
A. Acrylic acid
B. Epichlorohydrin
C. Vinyl chloride
D. Adipic acid with hexamethylene diamine
Submitted by :- Jamil Ahmed
Which one of the following set of raw material is most suitable for manufacture of urea ?
A. CH4 N2 and CO2
B. H2 N2 and CO
C. H2 CO2 and H2O
D. H2O N2 and H2
Submitted by :- Jamil Ahmed
How many zones through which the charge passes in a rotary kiln ?
A. 4
B. 3
C. 2
D. 5
Submitted by :- Jamil Ahmed
Which of the following processes is used for the synthesis of cement ?
A. dry process C. both
B. wet process D. none
Submitted by :- Jamil Ahmed
Calcareous material includes_________________?
A. lime stone
B. marble
C. chalk
D. all of the above
Submitted by :- Jamil Ahmed
The cooling of molten urea by air in the tower is called______________________?
A. prilling
B. evaporation
C. condensation
D. crystallization
Submitted by :- Jamil Ahmed
Addition of urea to the soil is ____________ reaction?
A. endothermic
B. exothermic
C. both a and b
D. no heat energy is involved
Submitted by :- Jamil Ahmed
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
Submitted by :- Jamil Ahmed
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
Submitted by :- Jamil Ahmed
Nucleic acids direct the synthesis of__________________?
A. Glucose
B. Triglycerides
C. Proteins
D. All
Submitted by :- Jamil Ahmed