Practice Test: Question Set - 11
1. Temperature during hydrogenation of oil should not be more than 200°C, otherwise it will result in
- (A) Pyrolysis of oil
- (B) Sintering of porous
catalyst
- (C) Hydrogen
embrittlement
- (D) All (a), (b) and (c)
2. Pick out the wrong statement.
- (A) Strongly caking coal
should not be used in the Lurgi gasifier
- (B) Acetylene gas cannot
be used for illumination purpose
- (C) Water gas is called
blue gas because of the color of the flame, when it is burnt
- (D) Gaseous fuels require
less percentage of excess air for combustion as compared to liquid fuels
3. Oleum produces fumes of
- (A) SO2
- (B) H2SO4
- (C) SO3
- (D) SO2 +
H2SO4
4. The difference between saponification value and acid value is
- (A) Called ester value
- (B) Always negative
- (C) Constant for all
fatty oils
- (D) None of these
5. Which of the following is not produced commercially from sea water?
- (A) Magnesium
& potassium compounds
- (B) Common salt
- (C) Bromine
- (D) Iodine
6. Which of the following may be viewed as a catalyst in the manufacture of soda ash by Solvay process?
- (A) NH3
- (B) NaCl
- (C) CaO
- (D) Coke
7. The most commonly used substance to speed up the sedimentation of sewage is
- (A) Lime
- (B) Sulphuric acid
- (C) Chlorine
- (D) Sodium bisulphite
8. Which catalyst is used in the manufacture of ethylene oxide by oxidation of ethylene?
- (A) AgO
- (B) Al2O3
- (C) ZnCl2
- (D) Fe2O3
9. Hydrogen gas is not produced commercially (for nitrogenous fertilizer manufacture) by
- (A) Iron-steam reaction
- (B) Electrolysis of water
- (C) Steam reforming of
naphtha
- (D) Its cryogenic
separation from coke oven gas
10. Multistage catalytic converter is not used in the
- (A) Conversion of SO2 to
SO3
- (B) NH3 synthesis
reaction
- (C) Both (a) and (b)
- (D) Neither (a) nor (b)
11. __________ is an ore of lead.
- (A) Quartz
- (B) Galena
- (C) Siderite
- (D) Chalcopyrite
12. Carbon tetrachloride (CCl4) is the starting raw material for the manufacture of
- (A) Trichloroethylene
- (B) Perchloroethylene
- (C) Parathion
- (D) Methanol
13. Presence of H2S in raw water (to be chlorinated) results in the
- (A) Reduced softening
capacity of zeolite
- (B) Increased dosage of
chlorine to provide a disinfecting residual in the water
- (C) Easy removal of its
hardness
- (D) None of these
14. Which allotrope of sulphur is insoluble in carbon disulphide?
- (A) Rhombic sulphur
- (B) Monoclinic sulphur
- (C) Plastic sulphur
- (D) Milk of sulphur
15. Platinum catalyst used in the earlier days of sulphuric acid manufacture by contact process suffers from the drawback like
- (A) High cost
- (B) Fragile nature
- (C) Easy poisoning
tendency
- (D) All (a), (b) and (c)
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