Hard water
Does not affect the lather formation by soap
Is not unfit for drinking purpose
Pollutes the water stream
All (A), (B) and (C)
Correct Answer :
B. Is not unfit for drinking purpose
Related Questions
Which of the following is used as a coagulant in water treatment?
Chloramine
Chlorine
Ferrous sulphate
Hydrogen peroxide
Pick out the wrong statement pertaining to nitric acid.
About 90% of nitric acid is manufactured by Ostwald's process
It is a strong mono basic acid which reacts with almost all the metals except noble metals
Yellow color of impure nitric acid is because of dissolved oxides of nitrogen (mainly NO2)
Arc process of nitric acid manufacture is economical as compared to Ostwald's process
Rotary kiln is not involved in the production of
Cement
Lime from limestone
Slaked lime from quick lime
None of these
Sodium chloride content in sea water is about __________ gms/litre.
2
10
25
50
Transportation of 35% oleum during winter suffers from the problem of freezing, which can be overcome by the addition of small quantity of
Nitric acid
Hydrochloric acid
Methyl alcohol
Formic acid
Varnish does not contain
Thinner
Pigment
Both (A) & (B)
Neither (A) nor (B)
P.T.F.E. (Poly tetra fluoro ethylene) is commercially known as
Bakelite
Neoprene
Teflon
Nylon-66
Liquefaction of gases cannot be done by
Exchange of heat with colder stream
Adiabatic expansion through a throttle valve (Joule-Thomson expansion)
Merely compressing it beyond critical pressure
Adiabatic expansion against a piston or in a turbine
Naphthalene is removed from coke oven gas by
Adsorbing on palladium
Absorbing in ethanolamine
Scrubbing with wash oil
Passing it through electrostatic precipitator
Function of sodium thiosulphate (hypo) in development of photographic film/plate is to
Brighten the faint images
Remove metallic silver
Convert silver chloride to silver
Remove unexposed silver halide
The purpose of tanning in leather industry is to
Stiffen the leather
Smoothen the leather
Make it flexible
Impart water resistance
Which of the following is used as a coagulant in treating turbid water?
Chlorine
Ferric sulphate
Calcium sulphate
Activated carbon
Glycerine is a by-product of the __________ industry.
Soap
Detergent
Oil hydrogenation
Paint
Alcohol content in freshly prepared natural and fortified wine may be respectively around __________ percent.
7-14 and 14-30
7-14 and 40-50
14 - 30 and 40-50
10 - 20 and 40 - 50
Which of the following is an yellow pigment?
Titanium dioxide
Ferrous sulphate
Lead chromates
Zinc sulphides
Nylon-6 is a
Polyamide
Thermosetting resin
Polyester
None of these
Gypsum is chemically
Calcium chloride
Potassium sulphate
Sodium sulphate
Calcium sulphate
Which of the following is a disaccharide?
Sucrose
Glucose
Starch
Maltose
Glycerine is recovered from lye by
Evaporation followed by vacuum distillation
Liquid extraction technique
Extractive distillation technique
None of these
Phosphate rock is a raw material for the manufacture of
Phosphoric acid
Phosphorous
Superphosphates
All (A), (B) and (C)
Acrylonitrile is mainly used in the __________ industry.
Polymer
Printing
Dyeing
Photographic
Hydrazine is largely used
As a starting material for 'hypo'
In photographic industry
As rocket fuel
In printing industry
Fats as compared to oils have
More unsaturated glycerides of fatty acids
Less unsaturated glycerides of fatty acids
Much higher reactivity to oxygen
Lower melting point
Acetone is produced by catalytic dehydrogenation of
Phenol
Naphthalene
Isopropanol
Ethyl benzene
Liquor poisoning generally occurs due to the presence of __________ in it.
Ethyl alcohol
Impurities
Methyl alcohol
Carbonic acid
Sucrose content in the raw juice extracted from sugar cane is about __________ percent.
1 - 2
15 - 20
50 - 60
80 - 85
Free alkali in a toilet soap is __________ that in a laundry shop.
Less than
More than
Same
None of these
Lurgi coal gasifier is a pressurised __________ bed reactor.
Moving
Fixed
Fluidised
Entrained
Catalyst used in the oxidation of benzene to produce Maleic anhydride is
V2O5
Pt
Ni
Cr
Oils and fats are converted to soap in a process called
Hydrogenation
Esterification
Saponification
None of these