chemical engineering fertilizer technology MCQs – Page 10

Practise multiple-choice questions from chemical engineering fertilizer technology for competitive examinations and subject revision. Review each marked answer and report any item that may be outdated or unclear.

chemical engineering fertilizer technology Mcqs
181. Ammonia synthesis gas is produced from fuel oil by _________________?
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A. Hydrogenation

B. Hydro-cracking

C. Steam reforming

D. Partial oxidation
182. In an ammonia plant, the purge off is essential to___________________?
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A. Remove excess poisonous gases

B. Remove uncondensed ammonia vapour

C. Maintain inert gas concentration within a limit

D. Maintain H2 : N2 ratio at 3 :1
183. Pick out the wrong statement ?
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A. Chemically unreactive nature of red phosphorous is due to its polymeric structure

B. sphorous by vaporisation followed by condensation

C. Green acid is the other name of phosphoric acid produced by the reaction of phosphate rock

D. p; sulphuric acid

E. Red phosphorous, which is used in the manufacture of safety matches, is converted into white

F. Red phosphorous is the most reactive allotropic form of phosphorous
184. In _____________ converter for ammonia synthesis, the catalyst is arranged in the form of a single continuous bed?
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A. Uhde

B. Kellogg

C. Fauser-Montecatini

D. Claude
185. Neutralisation of nitric acid with ammonia to produce ammonium nitrate is a/an _______________________ reaction?
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A. Endothermic

B. Autocatalytic

C. Catalytic

D. Exothermic
186. Both white phosphorous as well as red phosphorous_________________?
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A. Burns when heated in air

B. Are soluble in CS2

C. All A., B., and C.

D. Reacts with hot caustic soda solution to give Phosphine

187. Which of the following solvents is used for the extraction of H3PO4 from CaCl2 solution during manufacture of ortho-phosphoric acid by wet process employing hydrochloric acid leaching ?
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A. Isopropyl alcohol

B. Butyl alcohol

C. Toluene

D. Hexane

188. Main component of bone ash is _________________?
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A. Calcium carbonate

B. Calcium phosphate

C. Sodium phosphate

D. Calcium sulphate

189. Though liquid ammonia itself is a fertiliser (with 82% nitrogen content) yet it is commonly not used as such in a tropical country like India, because it___________________?
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A. Is in short supply

B. Vaporises at normal temperature

C. Has a pungent smell

D. Is toxic and highly corrosive

190. Triple superphosphate is chemically represented as_____________________?
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A. 3Ca3(PO4)2

B. CaF2.3Ca3(PO4)2

C. Ca(H2PO4)2

D. Ca(PO3)2

191. Potassic fertilisers do not promote the development of ______________________?
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A. Stems & leaves during early stage of plant growth

B. Sugar of fruits & vegetables

C. Fibrous materials of plants

D. Starches of potatoes & grains

192. Oxidation of ammonia is________________?
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A. Exothermic

B. Autocatalytic

C. Endothermic

D. Non-catalytic

193. The main constituent of rock phosphate is _____________________?
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A. Mono-calcium phosphate

B. Di-calcium phosphate

C. None of these

D. Fluorspar