MCQOPTIONS
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MCQOPTIONS
This section includes 212 Mcqs, each offering curated multiple-choice questions to sharpen your Chemical Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 151. |
Ammonium nitrate is$? |
| A. | Having about 40% N‚ÇÇ |
| B. | Not hygroscopic |
| C. | Not prone to explosive thermal decomposition |
| D. | Mixed with limestone powder to reduce its explosive nature before using it as a fertilizer |
| Answer» E. | |
| 152. |
Ammonium nitrate (is mixed with limestone) is not used as fertiliser as such, because$? |
| A. | It is hygroscopic and explosive in nature |
| B. | It is highly acidic in nature |
| C. | It is a liquid at room temperature |
| D. | Its nitrogen content is very less |
| Answer» B. It is highly acidic in nature | |
| 153. |
Chemical formula of biuret is$? |
| A. | NH‚ÇÇ.CO.NH‚ÇÇ |
| B. | NH‚ÇÉ.COO.NH‚ÇÉ |
| C. | NH‚ÇÇCONHCONH‚ÇÇ |
| D. | NH‚ÇÑCOONH‚ÇÇ |
| Answer» D. NH‚Äö√á√ëCOONH‚Äö√á√á | |
| 154. |
Triple superphosphate which contains about 46% P‚ÇÇO‚ÇÖ is produced by the reaction of phosphate rock with ortho phosphoric acid of____percent concentration.$? |
| A. | 25-28 |
| B. | 52-54 |
| C. | 75-80 |
| D. | > 98 |
| Answer» C. 75-80 | |
| 155. |
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$? |
| A. | Has a pungent smell |
| B. | Vaporises at normal temperature |
| C. | Is toxic and highly corrosive |
| D. | Is in short supply |
| Answer» C. Is toxic and highly corrosive | |
| 156. |
Yield of elemental phosphorous from rock phosphate is about __________ percent.$? |
| A. | 1-2 |
| B. | 15-25 |
| C. | 40-45 |
| D. | 60-65 |
| Answer» C. 40-45 | |
| 157. |
Which of the following is the costliest method for commercial production of hydrogen for ammonia synthesis?$? |
| A. | H? separation from coke oven gas |
| B. | Steam reforming of naphtha |
| C. | Cracking of natural gas |
| D. | Electrolysis of water |
| Answer» E. | |
| 158. |
Ammonium phosphate is a __________ fertiliser.$? |
| A. | Nitrogenous |
| B. | Phosphatic |
| C. | Complex |
| D. | Mixed |
| Answer» E. | |
| 159. |
Which is the most suitable fertiliser for paddy?$? |
| A. | CAN |
| B. | Ammonium sulphate |
| C. | Ammonium nitrate |
| D. | Superphosphate |
| Answer» C. Ammonium nitrate | |
| 160. |
Commercial fertilisers are available mostly in the form of$? |
| A. | Powder |
| B. | Grannules |
| C. | Lumps |
| D. | Flakes |
| Answer» C. Lumps | |
| 161. |
During conversion of ammonium carbamate into urea, presence of large excess of water$? |
| A. | Increases the yield of urea |
| B. | Adversely affects the yield of urea |
| C. | Reduces the evaporator load by diluting the urea solution |
| D. | Does not affect the yield of urea |
| Answer» C. Reduces the evaporator load by diluting the urea solution | |
| 162. |
In calcium ammonium nitrate (CAN) fertil-ser$? |
| A. | Nitrate nitrogen is quick acting |
| B. | Ammoniacal nitrogen is quick acting |
| C. | Nitrate nitrogen is slower acting |
| D. | None of these |
| Answer» B. Ammoniacal nitrogen is quick acting | |
| 163. |
C/H ratio (by weight) of naphtha used in nitrogenous fertiliser making is about$? |
| A. | 2 |
| B. | 6 |
| C. | 13 |
| D. | 20 |
| Answer» C. 13 | |
| 164. |
Phosphorus vapour comprises of$? |
| A. | P |
| B. | P‚ÇÇ |
| C. | P‚ÇÉ |
| D. | P‚ÇÑ |
| Answer» E. | |
| 165. |
Monte catini process is a widely used process for the manufacture of$? |
| A. | Urea |
| B. | Calcium ammonium nitrate |
| C. | Triple superposphate |
| D. | None of these |
| Answer» B. Calcium ammonium nitrate | |
| 166. |
Naphtha in a fertiliser plant is used as a source of$? |
| A. | Fuel |
| B. | H‚ÇÇ |
| C. | N‚ÇÇ |
| D. | O‚ÇÇ |
| Answer» C. N‚Äö√á√á | |
| 167. |
Phosphoric acid is produced in wet process from phosphate rock and$? |
| A. | Dilute H‚ÇÇSO‚ÇÑ |
| B. | Concentrated H‚ÇÇSO‚ÇÑ |
| C. | Concentrated NHO‚ÇÉ |
| D. | Concentrated HCl |
| Answer» B. Concentrated H‚Äö√á√áSO‚Äö√á√ë | |
| 168. |
Hydrogen is recovered from coke oven gas on commercial scale (as practised in fertiliser plant at Rourkela) by$? |
| A. | Adsorption on palladium |
| B. | Cryogenic operations (low temperature cooling) |
| C. | Absorption (using ethanolamine or pyragalloll solution) |
| D. | None of these |
| Answer» C. Absorption (using ethanolamine or pyragalloll solution) | |
| 169. |
Fusion zone in the electric furnace used for reduction of phosphate rock to elemental phosphorous is maintained at __________ °C.$? |
| A. | 250-300 |
| B. | 500-750 |
| C. | 950-1050 |
| D. | 1400-1450 |
| Answer» E. | |
| 170. |
Reaction of calcium fluorapatite with sulphuric acid produces$? |
| A. | Ortho-phosphoric acid |
| B. | Simple superphosphate |
| C. | Triple superphosphate |
| D. | Red phosphorous |
| Answer» C. Triple superphosphate | |
| 171. |
Which fertiliser is made (using coke oven gas) in by products plant of an integrated steel plant?$? |
| A. | Urea |
| B. | CAN |
| C. | Ammonium sulphate |
| D. | Superphosphate |
| Answer» D. Superphosphate | |
| 172. |
Ammonium nitrate is? |
| A. | Having about 40% N‚ÇÇ |
| B. | Not hygroscopic |
| C. | Not prone to explosive thermal decomposition |
| D. | Mixed with limestone powder to reduce its explosive nature before using it as a fertilizer |
| Answer» E. | |
| 173. |
Ammonium nitrate (is mixed with limestone) is not used as fertiliser as such, because? |
| A. | It is hygroscopic and explosive in nature |
| B. | It is highly acidic in nature |
| C. | It is a liquid at room temperature |
| D. | Its nitrogen content is very less |
| Answer» B. It is highly acidic in nature | |
| 174. |
Coal based fertiliser plants at Ramagundam (Andhra Pradesh) and Talchar (Orissa)? |
| A. | Use coal for heating purpose |
| B. | Gasify coal to get hydrogen from coal gas |
| C. | Use coal as filler in fertiliser |
| D. | Use coal as conditioner in fertiliser |
| Answer» C. Use coal as filler in fertiliser | |
| 175. |
Catalyst used in steam reforming of naphtha is? |
| A. | Nickel |
| B. | Platinum |
| C. | Silica gel |
| D. | Rhodium |
| Answer» B. Platinum | |
| 176. |
Which of the following is not a measure component necessarily to be present in fertilisers?? |
| A. | Nitrogen |
| B. | Potassium |
| C. | Phosphorous |
| D. | Sulphur |
| Answer» E. | |
| 177. |
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 |
| Answer» C. 1000-1200 | |
| 178. |
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 fertiliser in land causes the problem of diarrhoea and cyanosis |
| C. | Application of large excess of potassic fertiliser in soil increases the valuable carotene in fruits and vegetables |
| D. | Cereal crops grown on alkaline soil absorb higher amount of flourides thereby spreading flourosis |
| Answer» D. Cereal crops grown on alkaline soil absorb higher amount of flourides thereby spreading flourosis | |
| 179. |
Triple superphosphate which contains about 46% P‚ÇÇO‚ÇÖ is produced by the reaction of phosphate rock with ortho phosphoric acid of____percent concentration.? |
| A. | 25-28 |
| B. | 52-54 |
| C. | 75-80 |
| D. | > 98 |
| Answer» C. 75-80 | |
| 180. |
Nitrogen content in ammonium sulphate (a fertiliser) is around __________ percent.? |
| A. | 5 |
| B. | 20 |
| C. | 50 |
| D. | 65 |
| Answer» C. 50 | |
| 181. |
Commercial fertilisers are available mostly in the form of? |
| A. | Powder |
| B. | Grannules |
| C. | Lumps |
| D. | Flakes |
| Answer» C. Lumps | |
| 182. |
During conversion of ammonium carbamate into urea, presence of large excess of water? |
| A. | Increases the yield of urea |
| B. | Adversely affects the yield of urea |
| C. | Reduces the evaporator load by diluting the urea solution |
| D. | Does not affect the yield of urea |
| Answer» C. Reduces the evaporator load by diluting the urea solution | |
| 183. |
Ammonium phosphate is a __________ fertiliser.? |
| A. | Nitrogenous |
| B. | Phosphatic |
| C. | Complex |
| D. | Mixed |
| Answer» E. | |
| 184. |
Which is the most suitable fertiliser for paddy?? |
| A. | CAN |
| B. | Ammonium sulphate |
| C. | Ammonium nitrate |
| D. | Superphosphate |
| Answer» C. Ammonium nitrate | |
| 185. |
Hydrogen is recovered from coke oven gas on commercial scale (as practised in fertiliser plant at Rourkela) by? |
| A. | Adsorption on palladium |
| B. | Cryogenic operations (low temperature cooling) |
| C. | Absorption (using ethanolamine or pyragalloll solution) |
| D. | None of these |
| Answer» C. Absorption (using ethanolamine or pyragalloll solution) | |
| 186. |
Fusion zone in the electric furnace used for reduction of phosphate rock to elemental phosphorous is maintained at __________ °C.? |
| A. | 250-300 |
| B. | 500-750 |
| C. | 950-1050 |
| D. | 1400-1450 |
| Answer» E. | |
| 187. |
Naphtha in a fertiliser plant is used as a source of? |
| A. | Fuel |
| B. | H‚ÇÇ |
| C. | N‚ÇÇ |
| D. | O‚ÇÇ |
| Answer» C. N‚Äö√á√á | |
| 188. |
Phosphoric acid is produced in wet process from phosphate rock and? |
| A. | Dilute H‚ÇÇSO‚ÇÑ |
| B. | Concentrated H‚ÇÇSO‚ÇÑ |
| C. | Concentrated NHO‚ÇÉ |
| D. | Concentrated HCl |
| Answer» B. Concentrated H‚Äö√á√áSO‚Äö√á√ë | |
| 189. |
Phosphorus vapour comprises of? |
| A. | P |
| B. | P‚ÇÇ |
| C. | P‚ÇÉ |
| D. | P‚ÇÑ |
| Answer» E. | |
| 190. |
Monte catini process is a widely used process for the manufacture of? |
| A. | Urea |
| B. | Calcium ammonium nitrate |
| C. | Triple superposphate |
| D. | None of these |
| Answer» B. Calcium ammonium nitrate | |
| 191. |
In calcium ammonium nitrate (CAN) fertil-ser? |
| A. | Nitrate nitrogen is quick acting |
| B. | Ammoniacal nitrogen is quick acting |
| C. | Nitrate nitrogen is slower acting |
| D. | None of these |
| Answer» B. Ammoniacal nitrogen is quick acting | |
| 192. |
C/H ratio (by weight) of naphtha used in nitrogenous fertiliser making is about? |
| A. | 2 |
| B. | 6 |
| C. | 13 |
| D. | 20 |
| Answer» C. 13 | |
| 193. |
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? |
| A. | Has a pungent smell |
| B. | Vaporises at normal temperature |
| C. | Is toxic and highly corrosive |
| D. | Is in short supply |
| Answer» C. Is toxic and highly corrosive | |
| 194. |
Chemical formula of biuret is? |
| A. | NH‚ÇÇ.CO.NH‚ÇÇ |
| B. | NH‚ÇÉ.COO.NH‚ÇÉ |
| C. | NH‚ÇÇCONHCONH‚ÇÇ |
| D. | NH‚ÇÑCOONH‚ÇÇ |
| Answer» D. NH‚Äö√á√ëCOONH‚Äö√á√á | |
| 195. |
Which of the following is the costliest method for commercial production of hydrogen for ammonia synthesis?? |
| A. | H? separation from coke oven gas |
| B. | Steam reforming of naphtha |
| C. | Cracking of natural gas |
| D. | Electrolysis of water |
| Answer» E. | |
| 196. |
Yield of elemental phosphorous from rock phosphate is about __________ percent.? |
| A. | 1-2 |
| B. | 15-25 |
| C. | 40-45 |
| D. | 60-65 |
| Answer» C. 40-45 | |
| 197. |
Which fertiliser is made (using coke oven gas) in by products plant of an integrated steel plant?? |
| A. | Urea |
| B. | CAN |
| C. | Ammonium sulphate |
| D. | Superphosphate |
| Answer» D. Superphosphate | |
| 198. |
Reaction of calcium fluorapatite with sulphuric acid produces? |
| A. | Ortho-phosphoric acid |
| B. | Simple superphosphate |
| C. | Triple superphosphate |
| D. | Red phosphorous |
| Answer» C. Triple superphosphate | |
| 199. |
A potassic fertiliser contains 50% K‚ÇÇO. It could be$ |
| A. | Potassium sulphate |
| B. | Potassium chloride |
| C. | A mixture of NaCl+ KCl |
| D. | None of these |
| Answer» B. Potassium chloride | |
| 200. |
Which nutrient in fertiliser makes the plant stems stronger and increases branching? |
| A. | Nitrogen |
| B. | Phosphorous |
| C. | Potassium |
| D. | Calcium |
| Answer» C. Potassium | |