| 1. | Ammonium sulphate can be produced by reacting gypsum with |
| a. | ammonia |
| b. | ammonium carbonate |
| c. | nitric acid |
| d. | none of these |
| View Answer Report Discuss 50-50! |
|
Answer: (b).ammonium carbonate
|
| 2. | Nitrogenous fertiliser is required |
| a. | during the early stage of growth to promote development of stem and leaves. |
| b. | for accelerating fruit formation in later stage of growth. |
| c. | to lessen the effect of excessive potash application. |
| d. | none of these. |
| View Answer Report Discuss 50-50! |
|
Answer: (a).during the early stage of growth to promote development of stem and leaves.
|
| 3. | Fertiliser plant making ammonium sulphate employing gypsum-ammonia reaction (usual practice is to use ammonia and sulphuric acid) is located at |
| a. | Rourkela (under SAIL) |
| b. | Bokaro (under SAIL) |
| c. | Sindri (under FCI) |
| d. | Baroda (under G.S.F.C.) |
| View Answer Report Discuss 50-50! |
|
Answer: (c).Sindri (under FCI)
|
| 4. | Catalyst used in Haber's process for ammonia production is |
| a. | reduced iron oxide |
| b. | nickel |
| c. | vanadium pentoxide |
| d. | silica gel |
| View Answer Report Discuss 50-50! |
|
Answer: (a).reduced iron oxide
|
| 5. | Sodium tri poly phosphate (STPP) is manufactured by reaction of phosphoric acid with sodium |
| a. | carbonate |
| b. | phosphate |
| c. | bicarbonate |
| d. | silicate |
| View Answer Report Discuss 50-50! |
|
Answer: (a).carbonate
|