Practice Test: Question Set - 23
1. Rotary kiln is not involved in the production of
- (A) Cement
- (B) Lime from limestone
- (C) Slaked lime from
quick lime
- (D) None of these
2. __________ is an ore concentrating metallurgical process involving a chemical change.
- (A) Electromagnetic
separation
- (B) Froth floatation
- (C) Roasting
- (D) None of these
3. Fusel oil is a/an
- (A) Essential oil
- (B) Extract from
medicinal herbs
- (C) Mixture of higher
molecular weight alcohols (a by-product obtained during production of alcohol
from molasses).
- (D) None of these
4. Solvent used for extraction of oil is
- (A) Hexane
- (B) Methyl ethyl ketone
- (C) Furfural
- (D) None of these
5. Titanium dioxide is a/an __________ color pigment.
- (A) White
- (B) Black
- (C) Yellow
- (D) Blue
6. Bordeaux mixture is a/an
- (A) Fertilizer
- (B) Inorganic fungicide
- (C) Insecticide
- (D) Explosive
7. Concentration of NaOH solution produced by mercury electrolytic cell is about __________ percent.
- (A) 10
- (B) 25
- (C) 50
- (D) 98
8. The most stable allotropic form of phosphorous is the __________ phosphorous.
- (A) White
- (B) Black
- (C) Yellow
- (D) Red
9. Type of glass used in optical work is the __________ glass.
- (A) Soda-lime
- (B) Fibre
- (C) Lead
- (D) Borosilicate
10. Commercial production of calcium carbide requires limestone and __________ as raw materials.
- (A) Coke
- (B) Sand
- (C) Soda ash
- (D) Fuel oil
11. Esterification reaction
- (A) Produces soap
- (B) Is reversible
- (C) Is a reaction between
an alcohol and an organic acid
- (D) All (a), (b) and (c)
12. Bleaching action of bleaching powder is due to its __________ properties.
- (A) Reducing
- (B) Oxidizing
- (C) Disinfecting
- (D) None of these
13. The most economical pulp for the production of newsprint would be the __________ pulp.
- (A) Ground-wood
- (B) Sulphate
- (C) Sulphite
- (D) Semi-chemical
14. Alkylbenzene sulfonate (ABS) is a
- (A) Detergent
- (B) Rubber
- (C) Pesticide
- (D) Polyester
15. Very fine suspended and colloidal impurities are removed from water by a process called
- (A) Sedimentation
- (B) Coagulation
- (C) Disinfection
- (D) Softening
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