Nitric acid is not used in the manufacture of______________________?
A. Detergents
B. Fertilisers
C. Aqua regia
D. Explosives
Chemical Process
Viscose rayon is__________________?
Viscose rayon is__________________?
A. Cellulose nitrate
B. Regenerated cellulose nitrate
C. Regenerated cellulose acetate
D. None of these
Permanent hardness of water can be removed by___________________?
Permanent hardness of water can be removed by___________________?
A. Boiling
B. Adding Ca(OH)2
C. Boiling it with Na2CO3
D. None of these
Celluloid is chemically___________________?
Celluloid is chemically___________________?
A. Cellulose acetate
B. Regenerated cellulose
C. Cellulose nitrate
D. Cellulose acetate butyrate
Plasticisers are added to synthetic plastics to____________________?
Plasticisers are added to synthetic plastics to____________________?
A. Impart flexibility
B. Improve workability during fabrication
C. Develop new improved properties not present in the original resins
D. All A, B. and C.
One of the steps during refining of cane sugar consists of addition of hydrated lime to the sugar syrup followed by carbonation of the resulting solution. The purpose of this step is to_________________?
One of the steps during refining of cane sugar consists of addition of hydrated lime to the sugar syrup followed by carbonation of the resulting solution. The purpose of this step is to_________________?
A. Adjust the pH of the syrup
B. Remove the coloring matter from the syrup
C. Reduce the viscosity of the syrup
D. Improve the rate of crystallisation of sugar
Penicillin, an antibiotic drug was discovered by__________________?
Penicillin, an antibiotic drug was discovered by__________________?
A. Alexander
B. Flaming
C. Doctor Zhivago
D. None of these
_________________ is produced using Polycondensation Reaction?
_________________ is produced using Polycondensation Reaction?
A. Polythene
B. Phenol formaldehyde
C. Poly vinyl chloride
D. None of these
A mixture of chlorine & sodium bromide acts as a/an_________________?
A mixture of chlorine & sodium bromide acts as a/an_________________?
A. Insecticides
B. Analgesic drug
C. Fire retardant
D. Hydrogenation catalyst
Sucrose is a__________________?
Sucrose is a__________________?
A. Monosaccharide
B. Disaccharide
C. Polysaccharide
D. None of these