1. | Ammonium sulphate can be produced by reacting gypsum with |
a. | ammonia |
b. | ammonium carbonate |
c. | nitric acid |
d. | none of these |
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Answer: (b).ammonium carbonate
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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. |
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Answer: (a).during the early stage of growth to promote development of stem and leaves.
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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.) |
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Answer: (c).Sindri (under FCI)
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4. | Catalyst used in Haber's process for ammonia production is |
a. | reduced iron oxide |
b. | nickel |
c. | vanadium pentoxide |
d. | silica gel |
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Answer: (a).reduced iron oxide
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5. | Sodium tri poly phosphate (STPP) is manufactured by reaction of phosphoric acid with sodium |
a. | carbonate |
b. | phosphate |
c. | bicarbonate |
d. | silicate |
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Answer: (a).carbonate
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