Maleic anhydride is produced by catalytic oxidation of
Toluene
Ethyl alcohol
Naphthalene
Benzene
Correct Answer :
D. Benzene
Related Questions
Low purity oxygen is used for
L.D. steel making
Cutting and welding of metals
Medicinal purposes
Chemical oxidation processes
Catalytic oxidation of toluene produces
Styrene
Phenol
Benzene
Tri-nitro-toluene
Which of the following is an endothermic reaction?
Absorption of SO3 in 98% H2SO4
C + H2O = CO + H2
Thermal dissociation of iron pyrites
Both (B) and (C)
Varnish does not contain
Thinner
Pigment
Both (A) & (B)
Neither (A) nor (B)
Starting material for the production of butadiene in India is
Naphthalene
Benzol
Ethyl alcohol
Phthalic anhydride
Which of the following is a bleaching agent added in the detergents to facilitate removal of stains caused due to blood, tea etc?
Sodium silicate
Sodium borate
Sodium tripolyphosphate (STPP)
Caustic soda
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)
Low temperature carbonisation of coal takes place at __________ °C.
300
1100
700
900
Air used in aerobic fermentation must be sterilized, otherwise the
Recovery of product will be difficult
Contamination of pure culture would result
Uniformity of product cannot be achieved
None of these
A bio-catalyst produced by living cells which acts independent of the cell is called a/an
Substrate
Enzyme
Nutrient
None of these
Extraction of __________ employs an electrolytic process.
Aluminium
Silver
Copper
All (A), (B) and (C)
Tall oil obtained as a by-product from the black liquor recovery is
A black, sticky & viscous liquid
Used in the manufacture of greases, emulsions & soaps
Composed mainly of rosin & fatty acids
All (A), (B) & (C)
Polymethyl methacrylate (PMMA) is known as
Bakelite
Teflon
Perspex
Nylon-6
'Hollander beater' machine used in the paper manufacturing plant does not accomplish the task of
Final rolling out of paper
Cutting of fibres
Hydration of fibres
Fibrillation of fibre
Most widely and commonly used coagulant for the removal of suspended impurities in water is
Bleaching powder
Slaked lime
Alum
Copper sulphate
Sulphuric acid solution having a specific gravity of 1.20 at room temperature is used mainly for the
Fertiliser manufacture
Car battery solution
Synthesis of oleum
Water treatment
How much temperature is maintained during quicklime manufacture in the calcination zone of the vertical shaft kiln?
500°C
750°C
1000°C
1500°C
Hydrophilic group of a soap or detergent solution is
Water hating
Soil loving
Water loving
None of these
Pick out the wrong statement.
Chamber process of sulphuric acid manufacture produces pure acid of concentration < 80%
Contact process of sulphuric acid manufacture produces pure acid of concentration ≥ 98%
75% oleum can be produced by distillation of 20% oleum
Contact process of sulphuric acid manufacture uses nickel as the catalyst
Phenolic antiseptics are added in the __________ soap.
Shaving
Medicated
Metallic
Transparent
The terminology 'BTX' used in coal tar distillation industry refers to
Benzol-toluol-xylol
Benzol-toluene-xylene
Benzene-toluol-xylol
Benzene-toluene-xylene
Dacron is a/an
Polyester
Unsaturated polyester
Polyamide
Inorganic polymer
Gelatine which is a nitrogenous organic protein is obtained by the hydrolysis of
Collagen
Tannin
Molasses
Carbohydrate
Catalyst used during the manufacture of 'Vanaspati Ghee' is
Zinc
Nickel
Platinum
Copper
Fire clay is __________ refractory material.
A basic
An acidic
A neutral
Not a
Wet chlorine gas produced during electrolysis of brine is dehydrated by
Spraying 66° Be H2SO4 counter current to the flow of the gas
Passing it through a bed of diatomaceous earth
Passing it through a bed of silica gel
None of these
Commercial production of soda ash by Solvay process requires limestone, __________ as raw materials.
Coke and sand
Brine and coal
Coke and caustic soda
None of these
The drug used in contraceptives is
Sulfadiazine
Mestranol
Methyl salicylate
Penicillin
White phosphorous is stored under water, because
It does not react with water
It is poisonous
Its kindling temperature in dry air is very low
It is unstable
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