Yellow glycerine is made into white, using____________________?
A. Activated carbon
B. Diatomaceous earth
C. Bauxite
D. Bentonite
Chemical Process
Coloured glass is obtained by mixing of colored salts. Addition of ___________________ oxide is done to impart greenish blue color to the glass?
Coloured glass is obtained by mixing of colored salts. Addition of ___________________ oxide is done to impart greenish blue color to the glass?
A. Chromium
B. Arsenic
C. Copper
D. Manganese
Commercially ethylene is produced from naphtha by ______________________?
Commercially ethylene is produced from naphtha by ______________________?
A. Catalytic cracking
B. Catalytic dehydrogenation
C. Pyrolysis
D. Hydrocracking
Hydrolysis of sugar is called_____________________?
Hydrolysis of sugar is called_____________________?
A. Hydration
B. Inversion
C. Esterification
D. None of these
Sizing material is incorporated in paper to___________________?
Sizing material is incorporated in paper to___________________?
A. Impart resistance to penetration by liquids
B. Increase its thickness
C. Increase its flexibility & opacity
D. Increase its brightness
Shrinkage volume in cement setting does not depend upon the _____________________?
Shrinkage volume in cement setting does not depend upon the _____________________?
A. Sand to cement ratio
B. Water to cement ratio
C. Ambient temperature fluctuation
D. Drying period
Widely used method for the conditioning of boiler feed water is the ___________________?
Widely used method for the conditioning of boiler feed water is the ___________________?
A. Cold lime process
B. Coagulation
C. Hot-lime soda process
D. Sequestration
Which of the following processes can remove both temporary as well as permanent hardness of water ?
Which of the following processes can remove both temporary as well as permanent hardness of water ?
A. Filtration
B. Boiling
C. Distillation
D. None of these
Phenol formaldehyde is produced by condensation polymerisation. It is also known as_____________________?
Phenol formaldehyde is produced by condensation polymerisation. It is also known as_____________________?
A. Teflon
B. Bakelite
C. Polyester
D. Nylon-66
What products do we get on electrolysis of saturated brine using steel cathode and graphite anode in an electrolytic cell ?
What products do we get on electrolysis of saturated brine using steel cathode and graphite anode in an electrolytic cell ?
A. Cl2 & Na
B. Cl2 & H2
C. O2 & H2
D. Cl2, H2 & NaOH solution