Purity of oxygen used for blowing in steel making L.D. converter is 99.5%. The boiling point of oxygen is about _____________ °C ?
A. -53
B. -103
C. -183
D. -196
Chemical Process
Frasch process is for______________________?
Frasch process is for______________________?
A. Making oxygen
B. Producing helium
C. Mining sulphur
D. Making nitrogen
The drug used in contraceptives is____________________?
The drug used in contraceptives is____________________?
A. Sulfadiazine
B. Mestranol
C. Methyl salicylate
D. Penicillin
Neoprene is a__________________?
Neoprene is a__________________?
A. Monomer
B. Synthetic rubber
C. Polyester
D. None of these
Gun powder, which is an explosive comprises of charcoal, sulphur and____________________?
Gun powder, which is an explosive comprises of charcoal, sulphur and____________________?
A. Glycerine
B. Salt petre
C. Nitro glycerine
D. Dynamite
High temperature carbonisation of coal takes place at __________________ °C?
High temperature carbonisation of coal takes place at __________________ °C?
A. 2000
B. 700
C. 1100
D. < 500
Viscose rayon is chemically___________________?
Viscose rayon is chemically___________________?
A. Cellulose nitrate
B. Regenerated cellulose nitrate
C. Cellulose acetate
D. Regenerated cellulose acetate
Mercury cells for caustic soda manufacture, compared to diaphragm cells___________________?
Mercury cells for caustic soda manufacture, compared to diaphragm cells___________________?
A. Require lower initial investment
B. Require more power
C. Produce lower concentration NaOH
D. None of these
Sucrose content in the raw juice extracted from sugar cane is about _________________ percent?
Sucrose content in the raw juice extracted from sugar cane is about _________________ percent?
A. 1 – 2
B. 15 – 20
C. 50 – 60
D. 80 – 85
Builders are added in soap to act as___________________?
Builders are added in soap to act as___________________?
A. Cleaning power booster
B. Anti-redeposition agent
C. Corrosion inhibitor
D. Fabric brightener