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
Correct Answer :
D. Contact process of sulphuric acid manufacture uses nickel as the catalyst
Related Questions
Which of the following, when pyrolysed, produces Perchloroethylene?
Ethylene dichloride
Chlorobenzene
Carbon tetrachloride
Chlorinated paraffin
Lindane is
Not a fumigant
BHC (Benzene Hexachloride) containing 99% γ-isomer
A by-product of BHC manufacture
Both (B) and (C)
Prussian blue is chemically represented by
FeO.TiO2
Ca SO4 . 2H2O
Fe4 [Fe (CN6)3]
AlF3 . 3NaF
CaO is called
Quick lime
Slaked lime
Limestone
Calcite
Phthalic anhydride is used
In making PVC
As plasticisers
In insecticides manufacture
For making nylon-6
Oil is a/an
Mixture of glycerides
Mixture of glycerides of fatty acids
Solid at normal temperature
Ester of alcohols other than glycerine
Which of the following is not required in the manufacture of soda ash by Solvay process?
Ammonia
Limestone
Nitric acid
None of these
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
Flux addition during smelting of ore is done to
Remove impurities/gangue
Enhance rate of reaction
Accelerate reduction of ore
Separate slag from metal
Which of the following impurities in feed water for high pressure boiler is the most detrimental?
Silica
Dissolved oxygen
Suspended salt
Dissolved salt
Resistance to fusion of the refractory under a steady rising temperature condition is called
Spalling
Refractoriness
Both (A) & (B)
Neither (A) nor (B)
Raw materials required for the manufacture of __________ is acetylene and hydrochloric acid.
Phthalic anhydride
Vinyl chloride
Maleic anhydride
Dacron
Stereospecific agents are exemplified by
Radiation
Supported metal oxide catalysts
Ziegler catalysts
All (A), (B) & (C)
Ca(OH)2 is called
Quicklime
Slaked lime
Limestone
Gypsum
Which of the following is not responsible for causing permanent hardness of water?
Ca(HCO3)2
CaCl2
MgCl2
None of these
In multistage equilibrium conversion of SO2 to SO3 (2SO2 + O2 2SO3), the reverse reaction becomes appreciable at a temperature of 550° C. The percentage equilibrium conversion of SO2 to SO3 can be increased by
Increasing the oxygen concentration
Putting more quantity of V2O5 catalyst in the converter
Removing some quantity of SO3 during intermediate stage
Maintaining low temperature & pressure in the converter
Pick out the wrong statement.
Strongly caking coal should not be used in the Lurgi gasifier
Acetylene gas cannot be used for illumination purpose
Water gas is called blue gas because of the color of the flame, when it is burnt
Gaseous fuels require less percentage of excess air for combustion as compared to liquid fuels
Which of the following is a constituent of vinegar?
Around 10% alcohol
Around 1% acetic acid
Both (A) and (B)
Neither (A) nor (B)
Ordinary glass is not a/an
Amorphous isotropic material
Supercooled liquid
Material with sharp definite melting point
Electrical insulator
The basic difference between vegetable oils and fats is in their
Density
Chemical properties
Physical state
Composition
Adipic acid is an intermediate in the manufacture of
Perspex
Nylon-66
Polystyrene
Bakelite
Argon is the third largest constituent of air (followed by N2 & O2). Its percentage by volume in air is
0.14
0.34
0.94
1.4
__________ of rubber decreases after its vulcanisation.
Resistance to the action of organic solvent
Tackiness
Maximum service temperature
Tensile strength
Ore concentration by froth floatation utilises the __________ of ore particles.
Density difference
Wetting characteristics
Terminal velocities
None of these
BHC (Benzene hexachloride) is made by the chlorination of benzene
Which is an addition reaction
Which is a substitution reaction
In absolute dark
In presence of sunlight
The catalyst used in shift converter is
Nickel
Vanadium
Silica gel
Alumina
Setting of plaster of Paris is accompanied with
Hydration
Dehydration
Hydrolysis
Loss of CO2
The most stable allotropic form of phosphorous is the __________ phosphorous.
White
Black
Yellow
Red
Which of the following coals has the highest calorific value?
Lignite
Sub-bituminous
Anthracite
Peat
Dry ice (solidified CO2) is used for the
Storage & shipment of frozen foods and ice-creams
Liquefaction of permanent gases
Liquefaction of natural gas
None of these