Dehydration of ammonium carbamate produces__________________?
(A) Urea
(B) Biuret
(C) Ammonia water
(D) None of these
P2O5 content in superphosphate is about _____________ percent?
(A) 30-35
(B) 15-20
(C) 65-70
(D) 85-90
Maximum stability of white phosphorous is at__________________?
(A) Very high pressure
(B) Atmospheric pressure
(C) Room temperature
(D) > 600°C
Potassic fertilisers__________________?
(A) Are useful during early stage of the plant growth
(B) Stimulate early growth and accelerate seeding
(C) Help in development of starches of potatoes and grain
(D) None of these
Which is the most suitable fertiliser for paddy ?
(A) CAN
(B) Ammonium sulphate
(C) Ammonium nitrate
(D) Superphosphate
Dehydration of ammonium carbamate (to produce urea) is a/an _____________ reaction?
(A) Reversible
(B) Catalytic
(C) Exothermic
(D) Endothermic
Potassic fertiliser is graded based on its ______________ content?
(A) KCl
(B) K2O
(C) KNO3
(D) K2SO4
Fertiliser produced during soda ash manufacture by dual process is ammonium______________________?
(A) Chloride
(B) Sulphate
(C) Nitrate
(D) None of these