- A. C + H₂O = CO + H₂
- B. CaC₂ + H₂O = Ca(OH)₂ + C₂H₂
- C. MgCO₃ = MgO + CO₂
- D. All of the above
Chemical Process
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Pick out the exothermic reaction out of the following:
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Polyvinyl chloride (PVC) is_____.
- A. A thermosetting material
- B. A condensation polymerisation product
- C. Made by employing emulsion polymerisation
- D. None of these
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Synthesis gas is a mixture of_____.
- A. CO and H₂
- B. N₂ and H₂
- C. H₂, CH₄ and CO
- D. CO₂ and H₂
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Raw materials for ‘Solvay Process’ for manufacture of the soda ash are_____.
- A. Salt, limestone and coke or gas
- B. Ammonia, salt and limestone
- C. Ammonia limestone and coke
- D. None of these
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Carborundum consists mainly of_____.
- A. Bauxite
- B. Silicon carbide
- C. Boron carbide
- D. Calcium carbide
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The major constituent of black liquor generated during paper manufacture is sodium_____.
- A. Sulphate
- B. Carbonate
- C. Hydroxide
- D. Bi-carbonate
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Pick out the wrong statement. Iodine value of an oil or fat is_____.
- A. The number of grams of iodine taken up by 100 gm of oil or fat
- B. A measure of its unsaturation
- C. Helpful in findings its adulteration & its suitability for making soap
- D. Independent of the type of oil, whether it is drying or non-drying
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Kopper-Totzek coal gasifier_____.
- A. Can give ammonia synthesis gas (H₂ + N₂)
- B. Is a moving bed reactor
- C. Cannot use coking coal
- D. Operate at very high pressure
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Which of the following coals has the highest calorific value?
- A. Lignite
- B. Sub-bituminous
- C. Anthracite
- D. Peat
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The purpose of tanning in leather industry is to_____.
- A. Stiffen the leather
- B. Smoothen the leather
- C. Make it flexible
- D. Impart water resistance