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
Which of the following processes is used for the synthesis of cement ?
(A) dry process
(B) wet process
(C) both
(D) none
What is clinker ?
(A) roasted calcareous material
(B) roasted argillaceous material
(C) roasted calcareous and argillaceous material
(D) roasted gypsum
The potassium present in plant help the plant to___________________?
(A) form starch sugar and fibrous material
(B) ripen the seeds and fruits
(C) increase the resistance against disease
(D) all the above statements are correct
Which one of the following is an inorganic fertilizer ?
(A) manure
(B) urea
(C) ammonium nitrate
(D) All
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
Argillaceous material does not include________________?
(A) vlay
(B) marine shells
(C) slate
(D) blast furnace slag
Which of the following potassium fertilizers are more useful for horticultural crops tobacco & potatoes ?
(A) KCI
(B) KNO3
(C) K2SO4
(D) KMnO4