Cumene is the starting material for the production of
Benzoic acid
Phenol and acetone
Isoprene
Styrene
Correct Answer :
B. Phenol and acetone
Related Questions
Gun powder uses
Sulphur
Charcoal
Potassium nitrate
All (A), (B), & (C)
Pick out the exothermic reaction out of the following:
C + H2O = CO + H2
CaC2 + H2O = Ca(OH)2 + C2H2
MgCO3 = MgO + CO2
All (A), (B) and (C)
Pick out the wrong statement.
Pasteurisation of milk involves moderate heating followed by cooling
Bakeries and breweries make use of yeasts
Enzyme is a complex nitrogenous compound
Oils and fats are alkaloids
At very high concentration of enzymes, the rate of fermentation chemical reaction is __________ the concentration of reactants.
Independent of
Directly proportional to
Inversely proportional to
Proportional to the square of
Styrene-butadiene-rubber (SBR) as compared to natural rubber has
Poorer tensile strength
Poorer resistance to oxidation
Greater amount of heat build-up under heavy loading
All (A), (B) and (C)
The purpose of tanning in leather industry is to
Stiffen the leather
Smoothen the leather
Make it flexible
Impart water resistance
Dehydrogenation of ethyl benzene produces
Styrene
Naphthalene
Phenol
Benzoic acid
__________ is used as a catalyst in fat splitting.
ZnO
Ni
V2O5
FeO
Chloramines are used in water treatment for
Disinfection and control of taste & odour
Corrosion control
Removing turbidity
Control of bacteria
Conversion of SO2 to SO3 in Monsanto 4-pass converter is about __________ percent.
80
90
98
100
Pick out the wrong statement.
High early strength cement are made from materials having high silica to lime ratio
The function of gypsum in cement is to enhance its initial setting rate
Acid resistant cements are known as silicate cement
Major component of greyish Portland cement is tricalcium silicate
Absorption of SO3 in 97% H2SO4 is
Exothermic
Endothermic
Not possible
None of these
Pick out the false statement pertaining to water treatment.
Aeration of water is effective in CO2 removal
The zeolite water softening process reduces the hardness of water by not more than 50%
Sodium sulphate or sodium carbonate do not cause hardness in water
Water with pH value less than 7, is acidic
The purpose of adding Na2CO3 to water of low alkalinity is to
Permit the use of alum as a coagulant
Increase the softening capacity of zeolite
Facilitate easy regeneration of zeolite
All (A), (B) and (C)
Widely used method for the conditioning of boiler feed water is the
Cold lime process
Coagulation
Hot-lime soda process
Sequestration
The major use of butadiene is
As a plasticiser for unsaturated polyester
In the manufacture of synthetic rubber
As an anti-skinning agent in paint
None of these
Hydrogenation of oil/fat does not
Improve its resistance to rancid oxidation
Raise its melting point
Remove double bonds
None of these
In the manufacture of viscose rayon, the raw material used industrially is
Eucalyptus wood
Bamboo
Bagasse
Fine teak wood
Silicone is a/an
Thermoplastic
Inorganic polymer
Monomer
None of these
__________ process is used for producing soda ash.
Chamber
Chance
Tromp
Solvay
Maleic anhydride is produced by catalytic oxidation of
Toluene
Ethyl alcohol
Naphthalene
Benzene
Which of the following coals has the highest calorific value?
Lignite
Sub-bituminous
Anthracite
Peat
Sea weeds are an important source of
Fluorine
Chlorine
Bromine
Iodine
Solvent extracted oil
Has low free fatty acid content
Is odourless
Has more of unsaturates
None of these
Zeolite removes both temporary as well as permanent hardness of water by precipitating calcium and magnesium present in water as insoluble zeolites. Used zeolite is regenerated by flushing with the solution of
Calcium sulphate
Sodium chloride
Sodium sulphate
Magnesium chloride
__________ process is used for the commercial production of nitric acid by the catalytic oxidation of ammonia.
Solvay
Ostwald's
Haber's
None of these
Which of the following is the purest form of water out of the following?
Underground water
Rain water
Well water
Lake water
The type of high refractive index glass used in optical instruments is __________ glass.
Pyrex
Flint
Crookes
None of these
Vulcanisation of rubber
Decreases its tensile strength
Increases its ozone & oxygen reactivity
Increases its oil & solvent resistance
Converts its plasticity into elasticity
Unsaturated oils compared to saturated oils have
Lower melting point & higher reactivity to oxygen
Higher melting point & higher reactivity to oxygen
Lower melting point & lower reactivity to oxygen
Higher melting point & lower reactivity to oxygen