Category: Chemical Process

A. Chemical
B. Biochemical
C. Photochemical
D. Electrochemical

A. SO2
B. H2SO3
C. SO3
D. H2SO4

A. Flint
B. Pyrex
C. Quartz
D. All A, B. & C

A. Require lower initial investment
B. Require more power
C. Produce lower concentration NaOH
D. None of these

A. As a lubricant
B. As a rust preventive
C. In hard water for cleaning of cloth
D. As a foam depressant in distillation column

A. Silica
B. Dissolved oxygen
C. Suspended salt
D. Dissolved salt

A. Aeration of water is effective in CO2 removal
B. The zeolite water softening process reduces the hardness of water by not more than 50%
C. Sodium sulphate or sodium carbonate do not cause hardness in water
D. Water with pH value less than 7, is acidic

A. Used in glycerine manufacture
B. An explosive
C. Used in dye manufacture
D. None of these

A. Water
B. Liquid ammonia
C. Kerosene oil
D. Alcohol

A. 2
B. 10
C. 25
D. 50