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.Management Sciences
Category: Common Chemical Industries
Cement is a mixture of________________?
A. clay and clinker
B. clay lime stone and gypsum
C. lime stone and gypsum
D. lime stone and clay
DAP (Diammonium hydrogen phosphate) contains ______________ plant nutrients?
A. 60%
B. 65%
C. 70%
D. 75%
Which one of the following statement is correct for urea ?
A. it is a synthetic fertilizer
B. it is a natural fertilizer
C. it provides micronutrients to the plants
D. it is an inorganic water soluble compound
Which of the following processes is used for the synthesis of cement ?
A. dry process
B. wet process
C. both
D. none
The important function of burning zone in the rotary kilm is __________________?
A. to dry the moisture of slurry
B. to decompose lime stone to unslaked lime
C. combination of different oxides like CaO SiO2 Fe2O3 and Al2O3
D. to reduce the impurities
The nutrients which are required in very small amount for the normal growth of plants are called_________________?
A. nitrogenous fertilizers
B. micronutrients
C. phosphorus fertilizer
D. all of the above
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