MCQOPTIONS
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MCQOPTIONS
This section includes 9 Mcqs, each offering curated multiple-choice questions to sharpen your Chemistry knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Sulphuric acid solution having a specific gravity of 20 at room temperature is used mainly for the |
| A. | water treatment |
| B. | fertiliser manufacture |
| C. | car battery solution |
| D. | synthesis of oleum |
| Answer» D. synthesis of oleum | |
| 2. |
__________ process is used for the commercial production of nitric acid by the catalytic oxidation of ammonia |
| A. | Solvay |
| B. | Ostwald's |
| C. | Haber's |
| D. | none of these |
| Answer» C. Haber's | |
| 3. |
In sulphate pulp manufacture, the pressure and temperature in the digestor is |
| A. | l atm., 800°C |
| B. | 10 atm., 800 °C |
| C. | 1 atm., 170 - 180°C |
| D. | 10 atm., 170-180°C |
| Answer» E. | |
| 4. |
Wood charcoal is used for decolouration of sugar, because it __________ the coloured materials. |
| A. | converts |
| B. | oxidises |
| C. | reduces |
| D. | adsorbs |
| Answer» E. | |
| 5. |
Gun powder, which is an explosive comprises of charcoal, sulphur and |
| A. | nitro glycerene |
| B. | salt petre |
| C. | dynamite |
| D. | glycerene |
| Answer» C. dynamite | |
| 6. |
ammonium bicarbonate |
| A. | essential oil. |
| B. | none of these |
| C. | extract from medicinal herbs. |
| D. | mixture of higher molecular weight alcohols (a by-product obtained during production of alcohol from molasses). |
| Answer» E. | |
| 7. |
Heating of __________ to 120°C, produces plaster of paris. |
| A. | calcium silicate |
| B. | gypsum |
| C. | calcium sulphate |
| D. | blue vitriol |
| Answer» C. calcium sulphate | |
| 8. |
Fermentation of molasses to produce ethyl alcohol is done at __________ °C |
| A. | 100 - 150 |
| B. | 20 - 30 |
| C. | 250 - 300 |
| D. | <-5 |
| Answer» C. 250 - 300 | |
| 9. |
Oils are partially hydrogenated (not fully) to manufacture vanaspati, because fully saturated solidified oils |
| A. | are prone to rancid oxidation. |
| B. | cause cholesterol build up and blood clotting. |
| C. | always contain some amount of nickel (as their complete removal is very difficult) |
| D. | have affinity to retain harmful sulphur compounds. |
| Answer» C. always contain some amount of nickel (as their complete removal is very difficult) | |