Practice Test: Question Set - 05
1. Phosphatic fertilizer is graded based on its __________ content.
- (A) P2O3
- (B) PCl5
- (C) P2O5
- (D) H3PO4
2. Catalyst used in Haber's process for ammonia production is
- (A) Reduced iron oxide
- (B) Nickel
- (C) Vanadium pentoxide
- (D) Silica gel
3. Which of the following gasifiers can be attached to coal based fertilizer plants?
- (A) Lurgi (high pressure) gasifier
- (B) Kopper-Totzek gasifier
- (C) Gasifier working at 20 atm
- (D) Gasifier working at 40 atm
4. In the manufacture of urea, the intermediate chemical formed is
- (A) Biuret
- (B) Ammonium carbamate
- (C) Ammonium carbonate
- (D) None of these
5. Conversion of yellow phosphorous to red phosphorous is done by heating it in covered retorts at __________ °C in absence of air.
- (A) 50-80
- (B) 250-400
- (C) 1000-1200
- (D) 800-900
6. Which fertilizer is made (using coke oven gas) in by products plant of an integrated steel plant?
- (A) Urea
- (B) CAN
- (C) Ammonium sulphate
- (D) Superphosphate
7. Reaction of __________ acid with phosphate rock produces superphosphates.
- (A) Hydrochloric
- (B) Sulphuric
- (C) Nitric
- (D) Phosphoric
8. Pick out the wrong statement.
- (A) 'Green acid' is the other name of phosphoric
acid produced by the reaction of phosphate rock & sulphuric acid
- (B) Chemically unreactive nature of red phosphorous
is due to its polymeric structure
- (C) Red phosphorous is the most reactive allotropic
form of phosphorous
- (D) Red phosphorous, which is used in the
manufacture of safety matches, is converted into white phosphorous by vaporization followed by condensation
9. HPO3 is the chemical formula of __________ phosphoric acid.
- (A) Pyro
- (B) Ortho
- (C) Meta
- (D) None of these
10. Catalyst used in the oxidation of ammonia is
- (A) Platinum-beryllium
- (B) Platinum-rhodium
- (C) Cobalt-molybdenum
- (D) Platinum-molybdenum
11. (CH3 C6 H4)3 PO4 is the chemical formula of
- (A) Triple superphosphate
- (B) Tricresyl phosphate
- (C) Fluorapatite
- (D) Superphosphate
12. Largest capacity nitrogenous fertilizer plants (2700 tons of NH3 per day) (2 Nos.) in India are located at
- (A) Thal-Vaishet (under RCF in Maharashtra) and Hazira (under IFFCO in
Gujarat)
- (B) Talcher (Orissa) and Ramagundam (A.P.) both under FCI
- (C) Korba (M.P.) and Talcher (Orissa) both under FCI
- (D) Haldia (W.B) and Namrup (Assam) both under HFC
13. During nitric acid manufacture, catalytic oxidation of ammonia at 800°C in presence of platinum catalyst produces nitrogen oxide. Conversion of NH3 to NO is about __________ percent.
- (A) 38
- (B) 68
- (C) 82
- (D) 98
14. H3PO4 is the chemical formula of __________ phosphoric acid.
- (A) Pyro
- (B) Ortho
- (C) Meta
- (D) None of these
15. Ammonia synthesis reaction is
- (A) Exothermic
- (B) Endothermic
- (C) Autocatalytic
- (D) None of these
Next Tests: