Transparent soaps (e.g. Pears) are
Usually soft soap (made from coconut oil) in which cane sugar & alcohol are added and finally washed with methylated spirit to achieve transparency
Metallic soaps with frothing agent and free Stearic acid to achieve transparency
Metallic soaps with frothing agent from which glycerine has not been recovered
None of these
Correct Answer :
A. Usually soft soap (made from coconut oil) in which cane sugar & alcohol are added and finally washed with methylated spirit to achieve transparency
Related Questions
A good quality coal should have
Low fusion point of ash
High ash content
High sulphur content
None of these
Wood charcoal is used for decolouration of sugar, because it __________ the coloured materials.
Adsorbs
Oxidises
Reduces
Converts
Sizing material is incorporated in paper to
Impart resistance to penetration by liquids
Increase its thickness
Increase its flexibility & opacity
Increase its brightness
Carbon content of pitch (residue of coal tar distillation) is around __________ percent.
70
55
80
94
Bleaching of paper pulp is done with
Activated clay
Bromine
Chlorine or chlorine dioxide
Magnesium sulphite
Frasch process is for
Making oxygen
Producing helium
Mining sulphur
Making nitrogen
Deaeration of water in its treatment is necessary, as it
Minimises its turbidity
Helps in controlling its taste and odour
Minimises its corrosiveness
None of these
__________ is a thermosetting plastic.
Polyvinyl chloride
Polythene
Bakelite
Teflon
Reaction of calcium carbide with water produces a gas, which is used
As an illuminant
For metal cutting/welding
Both (A) & (B)
Neither (A) nor (B)
Commercial scale production of hydrogen from iron-steam reaction represented by, 3Fe + 3H2O = Fe3O4 + 4H2, is not practised, as it is
A slow reaction
A discontinuous reaction (requiring regeneration of iron by water gas intermittently)
Still in development stage (by employing fluidised bed technique)
All (A), (B) and (C)
DDT stands for
Diethyl-diphenyl-trichloromethane
Dichloro-diphenyl-trichloromethane
diphenyl-dichloro-trichloromethane
Dichloro-diphenyl-trichloroethane
Nylon-6 is a
Polyamide
Thermosetting resin
Polyester
None of these
Oxidation of SO2 to SO3 is favoured by
Low temperature and low pressure
Low temperature and high pressure
High temperature and low pressure
High temperature and high pressure
Reaction of an alcohol with organic acid is called the __________ reaction.
Saponification
Esterification
Neutralisation
Acidification
The only commercial Fischer-Tropsch plant for producing liquid hydrocarbon fuel from coal is located at
SASOL (in South Africa)
Redcar (U.K.)
Los Angeles (U.S.A.)
Trombay (India)
Pure rectified spirit contains about __________ percent alcohol.
45
70
95
99.5
Zeigler process
Produces high density polyethylene
Produces low density polyethylene
Uses no catalyst
Employs very high pressure
Cement mainly contains
CaO, SiO2, Al2O3
MgO, SiO2, K2O
Al2O3, MgO, Fe2O3
CaO, MgO, K2O
The main aim behind cooling the digested chip at the bottom portion of the digestor by injecting cold black liquor is to
Avoid mechanical weakening of fibre
Remove lignin by way of crystallisation
Increase the cellulose content
None of these
Phthalic anhydride is produced by the oxidation of
Naphthalene
Benzene
Toluene
Aniline
Vegetable oils and fats basically differ in their
Density ranges
Physical state
Chemical composition
Chemical properties
Neoprene is the trade name of
Polyurethane
Phenol formaldehyde
Polychlorophrene
Styrene-butadiene rubber
All enzymes are made of
Fats
Carbohydrates
Proteins
Amino acids
Diaphragm electrolytic cell as compared to mercury electrolytic cell
Produces 70% NaOH solution
Requires less specific power consumption for the production of chlorine
Requires lesser investment for similar capacity
All (A), (B) and (C)
Lurgi coal gasifier is a pressurised __________ bed reactor.
Moving
Fixed
Fluidised
Entrained
Trinitro-toluene (TNT) is
Used in glycerine manufacture
An explosive
Used in dye manufacture
None of these
99.5% purity oxygen is used in
Cutting and welding by oxy-acetylene flame
Hospitals for medicinal purposes
Gas masks and artificial breathing apparatus
All (A), (B), and (C)
Pick out the correct statement.
A fat is converted into oil by its hydrogenation
There is no difference between a fat and an oil so far as its physical properties are concerned
All vegetable oils except coconut oil, contains fatty acids having more than sixteen carbon atoms
Vegetable oils are classified as drying, non-drying and semi drying oils depending upon their fatty acids content
The enzyme which converts starch into the disaccharides maltose is
Diastase
Maltase
Yeast
None of these
Rancidity of the fatty oil can be reduced by its
Decoloration
Hydrogenation
Oxidation
Purification