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.
| 201. |
In the manufacture of orthophosphoric acid by strong H₂SO₄ leaching wet process, keeping the reactor temperature above 100°C, results in the formation of undesriable$ |
| A. | CaSO‚ÇÑ .¬ΩH‚ÇÇO and CaSO‚ÇÑ crystals |
| B. | Pyrophosphoric acid |
| C. | Metaphosphoric acid |
| D. | All of the above |
| Answer» B. Pyrophosphoric acid | |
| 202. |
Which of the following nitrogenous fertilisers has the highest percentage of nitrogen? |
| A. | Calcium nitrate |
| B. | Calcium ammonium nitrate (CAN) |
| C. | Urea |
| D. | Ammonium sulphate |
| Answer» D. Ammonium sulphate | |
| 203. |
An increase in the NH‚ÇÉ/CO‚ÇÇ ratio in urea manufacture results in$ |
| A. | Increased degree of conversion of CO‚ÇÇ to urea |
| B. | Decreased degree of conversion of NH‚ÇÉ to urea |
| C. | Decreased yield of urea |
| D. | Decreased specific volume of molten mass |
| Answer» B. Decreased degree of conversion of NH‚Äö√á√â to urea | |
| 204. |
Steam reforming of naphtha is a source of hydrogen production for nitrogeneous fertiliser 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 |
| Answer» C. 10:1 | |
| 205. |
CaH‚ÇÑ(PO‚ÇÑ)‚ÇÇ is the chemical formula of$ |
| A. | Superphosphate |
| B. | Triple superphosphate |
| C. | Calcium phosphate |
| D. | Meta phosphoric acid |
| Answer» C. Calcium phosphate | |
| 206. |
Promoter used in NH‚ÇÉ synthesis catalyst is$ |
| A. | K‚ÇÇO |
| B. | SiO‚ÇÉ |
| C. | V‚ÇÇO‚ÇÖ |
| D. | U‚ÇÇO‚ÇÉ |
| Answer» D. U‚Äö√á√áO‚Äö√á√â | |
| 207. |
A phosphatic fertiliser contains 16% P‚ÇÇO‚ÇÖ. It could be# |
| A. | Dicalcium phosphate |
| B. | Superphosphate |
| C. | Triple superphosphate |
| D. | None of these |
| Answer» C. Triple superphosphate | |
| 208. |
P‚ÇÇO‚ÇÖ content in triple superphosphate is about __________ percent.# |
| A. | 42-50 |
| B. | 15-20 |
| C. | 85-90 |
| D. | 70-75 |
| Answer» B. 15-20 | |
| 209. |
Reaction of phosphate rock with 98% H‚ÇÇSO‚ÇÑ produces# |
| A. | Orthophosphoric acid |
| B. | Superphosphate |
| C. | White phosphorous |
| D. | None of these |
| Answer» B. Superphosphate | |
| 210. |
Heating of orthophosphoric acid to about 900°C, produces# |
| A. | Metaphosphoric acid |
| B. | Pyrophosphoric acid |
| C. | No change in it |
| D. | None of these |
| Answer» B. Pyrophosphoric acid | |
| 211. |
Catalyst used in the manufacture of NH‚ÇÉ by Haber's process is finely divided# |
| A. | Nickel |
| B. | Iron |
| C. | Vanadium pentoxide |
| D. | Alumina |
| Answer» C. Vanadium pentoxide | |
| 212. |
Which of the following fertilisers is needed for promoting the development of leaves and stems during early stages of plant growth? |
| A. | Nitrogeneous fertiliser |
| B. | Potassic fertiliser |
| C. | Phosphatic fertiliser |
| D. | None of these |
| Answer» B. Potassic fertiliser | |