Question: Gas based fertiliser plants use_________________?

• 1. Natural gas as a source of hydrogen
• 2. Natural gas as heating medium
• 3. Coal gas as a source of hydrogen
• 4. Coal gas as heating medium

Question: Main constituent of phosphate rock is_____________________?

• 1. Ammonium phosphate
• 2. Flour apatite
• 3. Calcium fluoride
• 4. Calcium phosphate

Question: Low grade coal is ______________ to produce ammonia synthesis gas?

• 1. Hydrogenated
• 2. Liquefied
• 3. Gasified
• 4. Dehydrogenated

Question: Liquid ammonia and 60% nitric acid reaction (which produces ammonium nitrate) is___________________?

• 1. Exothermic
• 2. Endothermic
• 3. Autocatalytic
• 4. None of these

Question: Catalyst used in steam reforming of naphtha is ___________________?

• 1. Bauxite
• 2. Cobalt
• 3. Nickel oxide on alumina support
• 4. Chromium

Question: Heating a mixture of phosphate rock, coke and sand in an electric furnace produces___________________?

• 1. Phosphoric acid
• 2. Ammonium phosphate
• 3. Phosphorous
• 4. Superphosphate

Question: Which of the following fertilisers contains the least percentage of nitrogen ?

• 1. Liquid ammonia
• 2. Urea
• 3. Ammonium phosphate
• 4. Ammonium sulphate

Question: pH value of soil is maintained at ______________ by the addition of fertiliser for optimum growth and health of the plant?

• 1. 4-5
• 2. 7-8
• 3. 9-10
• 4. 12-13

Question: 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___________________?

• 1. Has a pungent smell
• 2. Vaporises at normal temperature
• 3. Is toxic and highly corrosive
• 4. Is in short supply

Question: In the manufacture of H3 PO4 (ortho); strong H2 SO4 leaching wet process as compared to electric furnace process___________________?

• 1. Uses lower grade phosphate rock
• 2. Requires lower capital investment in the plant
• 3. Produces lower purity acid
• 4. Is very costly