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MCQs

Total Questions : 1041 | Page 100 of 105 pages
Question 991. Triple superphosphate is chemically represented as_____________________?
  1.    CaF2.3Ca3(PO4)2
  2.    3Ca3(PO4)2
  3.    Ca(PO3)2
  4.    Ca(H2PO4)2
 Discuss Question
Answer: Option A. -> CaF2.3Ca3(PO4)2
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 992. Triple superphosphate which contains about 46% P2O5 is produced by the reaction of phosphate rock with ortho phosphoric acid of_____________ percent concentration?
  1.    25-28
  2.    52-54
  3.    75-80
  4.    > 98
 Discuss Question
Answer: Option B. -> 52-54
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 993. Though kinetics of ammonia synthesis dictates the use of low temperature for high equilibrium conversion, yet it is kept moderately high (550°C), because at low temperature___________________?
  1.    Rate of reaction is very low
  2.    Very high pressure is required resulting in costly pressure vessel
  3.    Space velocity of gas is very low resulting in decreased conversion
  4.    None of these
 Discuss Question
Answer: Option A. -> Rate of reaction is very low
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 994. The main constituent of rock phosphate is _____________________?
  1.    Mono-calcium phosphate
  2.    Di-calcium phosphate
  3.    Fluorspar
  4.    None of these
 Discuss Question
Answer: Option B. -> Di-calcium phosphate
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 995. Potassic fertilisers do not promote the development of ______________________?
  1.    Stems & leaves during early stage of plant growth
  2.    Starches of potatoes & grains
  3.    Sugar of fruits & vegetables
  4.    Fibrous materials of plants
 Discuss Question
Answer: Option A. -> Stems & leaves during early stage of plant growth
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 996. Fertiliser value of a nitrogenous fertiliser is expressed in terms of its ______________ content?
  1.    N2
  2.    KNO3
  3.    NO2
  4.    NHO3
 Discuss Question
Answer: Option A. -> N2
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 997. Heating of ortho-phosphoric acid to 250°C produces___________________?
  1.    Meta-phosphoric acid
  2.    Pyrophosphoric acid
  3.    No change in it
  4.    None of these
 Discuss Question
Answer: Option B. -> Pyrophosphoric acid
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 998. Base suspension fertiliser essentially contains___________________?
  1.    13% N2 and 43% P2O5
  2.    43% N2 and 13% P2O5
  3.    43% N2 and 13% K2O
  4.    43% K2O and 43% P2O5
 Discuss Question
Answer: Option A. -> 13% N2 and 43% P2O5
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 999. Chemical formula of biuret is_________________?
  1.    NH2.CO.NH2
  2.    NH3.COO.NH3
  3.    NH2CONHCONH2
  4.    NH4COONH2
 Discuss Question
Answer: Option C. -> NH2CONHCONH2
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 1000. Ammonia synthesis gas is produced from fuel oil by _________________?
  1.    Steam reforming
  2.    Hydro-cracking
  3.    Partial oxidation
  4.    Hydrogenation
 Discuss Question
Answer: Option C. -> Partial oxidation
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!

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