Bromine is used in the preparation of
Fire extinguishing compounds
Fire proofing agents
Dyes and antiknock compounds
All (A), (B) and (C)
Correct Answer :
D. All (A), (B) and (C)
Related Questions
The major constituents of glass are
Lime, clay and soda ash
Sand, lime and soda ash
Silica, alumina and clay
Silica, alumina and soda ash
In sulphate pulp manufacture, the pressure and temperature in the digestor is
10 atm., 800 °C
10 atm., 170-180°C
1 atm., 170 - 180°C
1 atm., 800°C
Blue vitriol is chemically
Copper sulphate
Ferrous sulphate
Copper nitrate
Aluminium sulphate
Fourdrinier machine is used in the manufacture of
Nylon-6
Paper
Antibiotics
Sugar
Sucrose content in the raw juice extracted from sugar cane is about __________ percent.
1 - 2
15 - 20
50 - 60
80 - 85
'Synthesis gas' meant for the synthesis of organic compound is a variable mixture of
N2 & H2
CO2 & H2
CO & H2
C & H2
Zeolite is used in the
Water treatment
Glass manufacture
Hydrogenation of fatty oil as a catalyst
Development of exposed photographic plate
__________ is an ore concentrating metallurgical process involving a chemical change.
Electromagnetic separation
Froth floatation
Roasting
None of these
Which of the following, when pyrolysed, produces Perchloroethylene?
Ethylene dichloride
Chlorobenzene
Carbon tetrachloride
Chlorinated paraffin
Highly porous refractory bricks are
Less susceptible to chemical attack by molten fluxes and gases etc
Very strong
Having very high thermal conductivity
None of these
Paper grade bamboo contains about __________ percent cellulose.
5
20
40
60
Refractory bricks burnt at very high temperature have got
Greater resistance to corrosion by slags
Less resistance to corrosion by slags
High spalling tendency
None of these
Mannheim furnace is used in the manufacture of
Hydrochloric acid
H2SO4 by Chamber process
Calcium carbide
Corundum
Alcohol percentage in molasses may be around
10
40
70
85
Essential oils are usually obtained using
Steam distillation
Extractive distillation
Solvent extraction
Leaching
Absorption of SO3 in 97% H2SO4 is
Exothermic
Endothermic
Not possible
None of these
Presence of carbonaceous matter in the sewage
Causes reduction in its dissolved oxygen content thereby endangering the life of aquatic creatures
Reduces sulphate ions to sulphides causing obnoxious smell
Increases the quantity of chlorine used for its purification
All (A), (B) and (C)
Main constituent of dolomite is
CaCO3
MgCO3
K2CO3
Na2CO3
Fat dispersed in water is exemplified by
Colloids
Gel
Butter
Emulsion
Massecuite is
Used for paper making
Used as a cattle feed
Highly acidic in nature
None of these
The most economical pulp for the production of newsprint would be the __________ pulp.
Ground-wood
Sulphate
Sulphite
Semi-chemical
Sand and __________ is fused at 1300°C, to produce sodium silicate.
Limestone
Soda ash
Coke
Sodium sulphate
Fluorescent dyes are added in detergents to
Act as fabric brightener (by converting ultraviolet light to visible light) thereby improving the whiteness appearance of white fabrics
Attain distinctiveness from other brands
Act as tarnish inhibitor for metals like German silver
None of these
Neoprene is the trade name of
Polyurethane
Phenol formaldehyde
Polychlorophrene
Styrene-butadiene rubber
Which of the following paper does not require a filler during manufacture?
Bond paper
Writing paper
Blotting paper
Coloured paper
Which of the following is not a product of coal tar distillation?
Anthracene
Creosote oil
Carbolic oil
None of these
Cooking liquor in case of sulphite process is
Sodium sulphite and sodium bisulphite
Magnesium sulphite and free SO2 in acid medium
Magnesium sulphate and magnesium bicarbonate
None of these
__________ acid is an unsaturated fatty acid.
Palmitic
Oleic
Stearic
Oxalic
Lubricating greases are a mixture of
Mineral oil, soap and additives
Mineral oil and metallic soap
Mineral oil and fatty oil
Fatty oil and metallic soap
20% oleum means that in 100 kg oleum, there are 20 kg of
SO3 and 80kg of H2SO4
H2SO4 and 80kg of SO3
SO3 for each 100 kg of H2SO4
None of these