Chemical Process Analysis Questions and Answers - Set 19 - ObjectiveBooks

Chemical Process Analysis Questions and Answers - Set 19

Practice Test: Question Set - 19

1. Mercury electrolytic cells are preferred over diaphragm electrolytic cell (for production of caustic soda), as it
    (A) Has larger production capacity per unit cell
    (B) Consumes less power per ton of Cl2 produced
    (C) Produces high purity (70%) caustic soda directly
    (D) All (a), (b) and (c)

2. Air used in aerobic fermentation must be sterilized, otherwise the
    (A) Recovery of product will be difficult
    (B) Contamination of pure culture would result
    (C) Uniformity of product cannot be achieved
    (D) None of these

3. The drug used in contraceptives is
    (A) Sulfadiazine
    (B) Mestranol
    (C) Methyl salicylate
    (D) Penicillin

4. Lime and soda ash are added to water to remove
    (A) Bicarbonates & sulphates of calcium and magnesium
    (B) Undesirable taste and odour
    (C) Bacteria
    (D) Its corrosiveness

5. Neoprene is a
    (A) Monomer
    (B) Synthetic rubber
    (C) Polyester
    (D) None of these

6. Process conditions in fermentator used for production of penicillin is
    (A) 25°C, 2 atm
    (B) 50°C, 10 atm
    (C) 30°C, 200 mm Hg (absolute)
    (D) 90°C, 45 atm

7. Gun powder, which is an explosive comprises of charcoal, sulphur and
    (A) Glycerine
    (B) Salt petre
    (C) Nitro glycerine
    (D) Dynamite

8. Bromides contained in hot mother liquor is treated with __________ during manufacture of bromine from sea water.
    (A) SO3
    (B) Cl2
    (C) NH3
    (D) SO2

9. High temperature carbonization of coal takes place at __________ °C.
    (A) 2000
    (B) 700
    (C) 1100
    (D) < 500

10. High magnesia lime is added to hot sugar cane juice (during the manufacture of sugar) to
    (A) Flocculate the impurities
    (B) Facilitate fast filtration
    (C) Both (a) and (b)
    (D) Neither (a) nor (b)

11. Viscose rayon is chemically
    (A) Cellulose nitrate
    (B) Regenerated cellulose nitrate
    (C) Cellulose acetate
    (D) Regenerated cellulose acetate

12. Mannheim furnace is used in the manufacture of
    (A) Hydrochloric acid
    (B) H2SO4 by Chamber process
    (C) Calcium carbide
    (D) Corundum

13. Mercury cells for caustic soda manufacture, compared to diaphragm cells
    (A) Require lower initial investment
    (B) Require more power
    (C) Produce lower concentration NaOH
    (D) None of these

14. For the hydrogenation of oils, __________ (i) __________ is commonly used as catalyst and __________ (ii) __________ is a catalyst poison.
    (A) (i) platinum (ii) sulphur
    (B) (i) palladium (ii) oxygen
    (C) (i) nickel (ii) sulphur
    (D) (i) nickel (ii) oxygen

15. Sucrose content in the raw juice extracted from sugar cane is about __________ percent.
    (A) 1 - 2
    (B) 15 - 20
    (C) 50 - 60
    (D) 80 - 85

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