Practice Test: Question Set - 17
1. Metallic soap is __________ salt of fatty acids.
- (A) Sodium
- (B) Potassium
- (C) Both
sodium & potassium
- (D) Aluminium or calcium
2. Neon gas is
- (A) Flammable in nature
- (B) Used in color
discharge tube
- (C) Filled in lamps
having tungsten filament
- (D) All (a), (b) and (c)
3. DDT stands for
- (A) Diethyl-diphenyl-trichloromethane
- (B) Dichloro-diphenyl-trichloromethane
- (C) Diphenyl-dichloro-trichloromethane
- (D) Dichloro-diphenyl-trichloroethane
4. Which of the following contains least amount of N2?
- (A) Coke oven gas
- (B) Blast furnace gas
- (C) Producer gas
- (D) Water gas (blue gas)
5. Fish contains about __________ percent oil.
- (A) 5
- (B) 10
- (C) 20
- (D) 35
6. Oxidation of SO2 to SO3 is favored by
- (A) Low temperature and
low pressure
- (B) Low temperature and
high pressure
- (C) High temperature and
low pressure
- (D) High temperature and
high pressure
7. Solvent extracted oil
- (A) Has low free fatty
acid content
- (B) Is odourless
- (C) Has more of
unsaturates
- (D) None of these
8. Exothermic condensation reaction of monochlorobenzene with chloral in presence of 20% oleum as catalyst produces DDT. The reaction temperature is maintained at __________ °C.
- (A) 15-30
- (B) 90-100
- (C) 250-300
- (D) < 0
9. __________ is obtained as a by-product in the manufacture of sodium hydroxide using brine.
- (A) Chlorine
- (B) Ammonium chloride
- (C) Sodium carbonate
- (D) Sodium bi-carbonate
10. Paper pulp produced by Kraft/sulphate process is
- (A) Bleached easily
- (B) Dull white in color
- (C) Strong fibrous
- (D) Dark colored
11. Phenol is mainly used
- (A) To produce benzene
- (B) To produce phenol formaldehyde
- (C) To produce polyester
resin
- (D) As a plasticizer for
unsaturated polyester
12. White phosphorous is stored under water, because
- (A) It does not react
with water
- (B) It is poisonous
- (C) Its kindling
temperature in dry air is very low
- (D) It is unstable
13. Phthalic anhydride is used
- (A) In making PVC
- (B) As
plasticizers
- (C) In insecticides
manufacture
- (D) For making nylon-6
14. Styrene is produced from ethyl benzene by the process of
- (A) Dehydrogenation
- (B) Oxidation
- (C) Alkylation
- (D) Dehydration
15. __________ glass has the lowest co-efficient of thermal expansion and hence is more heat resistant.
- (A) Pyrex
- (B) Soda lime
- (C) Lead
- (D) High silica
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