Which of the following processes is absent in glass manufacturing process ?
A. Sintering
B. Annealing
C. Shag or forming
D. Melting
Chemical Process
Bleaching of paper pulp is done with__________________?
Bleaching of paper pulp is done with__________________?
A. Activated clay
B. Bromine
C. Chlorine or chlorine dioxide
D. Magnesium sulphite
Concentration of sulphide ores is done usually by____________________?
Concentration of sulphide ores is done usually by____________________?
A. Roasting
B. Smelting
C. Froth floatation
D. Electromagnetic separation
Diaphragm electrolytic cell as compared to mercury electrolytic cell_____________________?
Diaphragm electrolytic cell as compared to mercury electrolytic cell_____________________?
A. Produces 70% NaOH solution
B. Requires less specific power consumption for the production of chlorine
C. Requires lesser investment for similar capacity
D. All A , B. and C
Argon is the third largest constituent of air (followed by N2 & O2). Its percentage by volume in air is___________________?
Argon is the third largest constituent of air (followed by N2 & O2). Its percentage by volume in air is___________________?
A. 0.14
B. 0.34
C. 0.94
D. 1.4
Thermal pyrolysis of ethylene dichloride produces___________________?
Thermal pyrolysis of ethylene dichloride produces___________________?
A. Trichloroethylene
B. Vinyl chloride
C. Ethanol amine
D. Ethylene oxide
Wood charcoal is used for decolouration of sugar, because it _______________ the coloured materials?
Wood charcoal is used for decolouration of sugar, because it _______________ the coloured materials?
A. Adsorbs
B. Oxidises
C. Reduces
D. Converts
Massecuite is a terminology used in the ______________ industry ?
Massecuite is a terminology used in the ______________ industry ?
A. Paint
B. Oil hydrogenation
C. Soap
D. Sugar
Co-efficient of thermal expansion of glass is decreased by the addition of _______________ during its manufacture?
Co-efficient of thermal expansion of glass is decreased by the addition of _______________ during its manufacture?
A. CaO
B. MnO2
C. ZnO
D. FeS
More than 100 percent of _________________ is present in oleum?
More than 100 percent of _________________ is present in oleum?
A. SO3
B. H2SO4
C. H2SO3
D. SO2