Practice Test: Question Set - 12
1. Pick out the wrong statement.
- (A) Loamy soil is the best soil for vigorous plant growth, while the
clayey soil is solid and hence the plant roots penetrate with difficulty
- (B) Large excess use of nitrogenous fertilizer in
land causes the problem of diarrhoea and cyanosis
- (C) Application of large excess of Potassic
fertilizer in soil increases the valuable carotene in fruits and vegetables
- (D) Cereal crops grown on alkaline soil absorb
higher amount of fluorides thereby spreading fluorosis
2. Hydrogen content of coke oven gas is __________ percent.
- (A) 4
- (B) 22
- (C) 58
- (D) 84
3. Gas based fertilizer plants use
- (A) Natural gas as a source of hydrogen
- (B) Natural gas as heating medium
- (C) Coal gas as a source of hydrogen
- (D) Coal gas as heating medium
4. Which of the following fertilizers is used as a cattle feed?
- (A) Urea
- (B) Calcium ammonium nitrate
- (C) Superphosphate
- (D) Ammonium sulphate
5. Main constituent of phosphate rock is
- (A) Ammonium phosphate
- (B) Flour apatite
- (C) Calcium fluoride
- (D) Calcium phosphate
6. Which of the following does not come under the category of 'secondary nutrient' for plant growth?
- (A) Calcium
- (B) Magnesium
- (C) Sulphur
- (D) Oxygen
7. Low grade coal is ________ to produce ammonia synthesis gas.
- (A) Hydrogenated
- (B) Liquefied
- (C) Gasified
- (D) Dehydrogenated
8. Which of the following set of conditions is favorable for the maximum yield of ammonia by Haber's process?
- (A) High pressure, low reactants concentration, high
temperature
- (B) High pressure, low reactants concentration, low
temperature
- (C) High pressure, high reactants concentration, low
temperature
- (D) Low pressure, high reactants concentration, low
temperature
9. Liquid ammonia and 60% nitric acid reaction (which produces ammonium nitrate) is
- (A) Exothermic
- (B) Endothermic
- (C) Autocatalytic
- (D) None of these
10. Steam reforming of naphtha is a source of hydrogen production for nitrogenous fertilizer industry. What is the usual ratio of steam to carbon maintained in the process of steam reforming of naphtha?
- (A) 1.5 : 1
- (B) 3.5 : 1
- (C) 10 : 1
- (D) 15 : 1
11. Catalyst used in steam reforming of naphtha is
- (A) Bauxite
- (B) Cobalt
- (C) Nickel oxide on alumina support
- (D) Chromium
12. Catalyst used in desulphurisation of naphtha is
- (A) Co-Mo
- (B) Pt-Rh
- (C) Silica gel
- (D) Nickel
13. Heating a mixture of phosphate rock, coke and sand in an electric furnace produces
- (A) Phosphoric acid
- (B) Ammonium phosphate
- (C) Phosphorous
- (D) Superphosphate
14. In calcium ammonium nitrate (CAN) fertilizer
- (A) Nitrate nitrogen is quick acting
- (B) Ammoniacal nitrogen is quick acting
- (C) Nitrate nitrogen is slower acting
- (D) None of these
15. Nitro-phosphate (manufactured at Trombay-India) is a __________ fertilizer.
- (A) Mixed
- (B) Complex
- (C) Highly hygroscopic
- (D) Highly explosive
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