Chemical Process problems
- 1. __________ process is used for the manufacture of sodium carbonate by ammonia soda process.
Options- A. Ostwald's
- B. Bosch
- C. Solvay
- D. Haber's Discuss
Correct Answer: Solvay
- 2. Co-efficient of thermal expansion of glass is decreased by the addition of __________ during its manufacture.
Options- A. CaO
- B. MnO2
- C. ZnO
- D. FeS Discuss
Correct Answer: ZnO
- 3. Sucrose content in the raw juice extracted from sugar cane is about __________ percent.
Options- A. 1 - 2
- B. 15 - 20
- C. 50 - 60
- D. 80 - 85 Discuss
Correct Answer: 15 - 20
- 4. Wood charcoal is used for decolouration of sugar, because it __________ the coloured materials.
Options- A. adsorbs
- B. oxidises
- C. reduces
- D. converts Discuss
Correct Answer: adsorbs
- 5. The catalyst used in the manufacture of DDT (from chloral and chlorobenzene) is
Options- A. dilute H2SO4
- B. oleum
- C. ultraviolet light
- D. none of these Discuss
Correct Answer: oleum
- 6. Haemoglobin is a/an
Options- A. amino acid
- B. biological catalyst
- C. protein
- D. enezyme Discuss
Correct Answer: protein
- 7. Which of the following is not a raw material used for the manufacture of ordinary glass?
Options- A. Iron oxide
- B. Soda ash
- C. Limestone
- D. Silica Discuss
Correct Answer: Iron oxide
- 8. Salt cake is chemically represented by
Options- A. Na2SO4
- B. CaSO4.½H2O
- C. MgSO4
- D. BaSO4 Discuss
Correct Answer: Na2SO4
- 9. Starting raw material for the manufacture of alum is
Options- A. alumina
- B. gypsum
- C. bauxite
- D. ammonium bicarbonate Discuss
Correct Answer: bauxite
- 10. Styrene-butadiene-rubber (SBR) as compared to natural rubber has
Options- A. Poorer tensile strength.
- B. poorer resistance to oxidation.
- C. greater amount of heat build-up under heavy loading.
- D. all (a), (b) and (c). Discuss
Correct Answer: all (a), (b) and (c).
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