Practice Test: Question Set - 16
1. Sulphur addition in soap is done to
- (A) Improve the soap
texture
- (B) Cure pimples &
dandruff
- (C) Fasten lather
formation
- (D) Increase its
cleansing action
2. Polymerization product of C2F4 (carbon tetrafluoride) is called P.T.F.E (poly chloro tetra fluoro ethylene). It is also called
- (A) Polyurethane
- (B) Silicone
- (C) Teflon
- (D) Epoxy resin
3. Glass is
- (A) Mainly CaO
- (B) Subjected to
galvanizing
- (C) A
super cooled liquid
- (D) All (a), (b) and (c)
4. CaCl(OCl) is the chemical formula of
- (A) Hypo
- (B) Bleaching powder
- (C) Plaster of Paris
- (D) Aqua regia
5. In sulphate pulp manufacture, the pressure and temperature in the digestor is
- (A) 10 atm., 800 °C
- (B) 10 atm., 170-180°C
- (C) 1 atm., 170 - 180°C
- (D) 1 atm., 800°C
6. Pick out the wrong statement.
- (A) Chamber process of
sulphuric acid manufacture produces pure acid of concentration < 80%
- (B) Contact process of
sulphuric acid manufacture produces pure acid of concentration ≥ 98%
- (C) 75% oleum can be
produced by distillation of 20% oleum
- (D) Contact process of
sulphuric acid manufacture uses nickel as the catalyst
7. The basic constituent of vegetable oils is
- (A) Triglyceride
- (B) Fatty acids
- (C) Fatty
alcohol
- (D) Mono esters
8. Bio-degradable detergents
- (A) Can be readily
oxidized
- (B) Pose
problem in sewerage plant
- (C) Have
an isoparaffinic structure
- (D) Should
not be used as it spoils the cloth
9. Fusion of bauxite and __________ produces high alumina cement.
- (A) Alum
- (B) Limestone
- (C) Coke
- (D) Quartz
10. Laboratory glass wares which reacts with hydrofluoric acid, are made of the __________ glass.
- (A) Lead
- (B) Borosilicate
- (C) Soda lime
- (D) Alkali silicate
11. __________ are used as corrosion inhibitor for iron & steel in aqueous solutions.
- (A) Phosphates
- (B) Chromates
- (C) Sulphates
- (D) Bi-carbonates
12. Polymethyl methacrylate (PMMA) is known as
- (A) Bakelite
- (B) Teflon
- (C) Perspex
- (D) Nylon-6
13. Which is the main reducing agent during production of iron from iron ore in a blast furnace?
- (A) C
- (B) CO
- (C) CO2
- (D) H2
14. Function of thinner in a paint is to
- (A) Accelerate the
oxidation of oil
- (B) Prevent gelling of
the paint
- (C) Suspend pigments
& dissolve film forming materials
- (D) Form a protective
film
15. Which of the following is not responsible for causing permanent hardness of water?
- (A) Ca(HCO3)2
- (B) CaCl2
- (C) MgCl2
- (D) None of these
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