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Chemical Process

Sucrose content in cane sugar may be around ______________________ percent ?

August 22, 2021February 14, 2019 by admin
Sucrose content in cane sugar may be around ______________________ percent ?

A. 50
B. 70
C. 95
D. 80

Categories Chemical Process Leave a comment

Use of hydrated lime in water treatment_________________?

August 22, 2021February 14, 2019 by admin
Use of hydrated lime in water treatment_________________?

A. Before filtration, reduces the bacterial load on filters
B. After filtration, combats the corrosiveness of water due to the presence of O2 & CO2
C. Is to adjust the pH value
D. All A , B. and C.

Categories Chemical Process Leave a comment

Grignard reagent is chemically known as ____________________?

August 22, 2021February 14, 2019 by admin
Grignard reagent is chemically known as ____________________?

A. Ethyl magnesium chloride
B. Methyl magnesium chloride
C. Dichlorophenol
D. Monochloroacetic acid

Categories Chemical Process Leave a comment

Raw materials required for the manufacture of __________________ is acetylene and hydrochloric acid?

August 22, 2021February 14, 2019 by admin
Raw materials required for the manufacture of __________________ is acetylene and hydrochloric acid?

A. Phthalic anhydride
B. Vinyl chloride
C. Maleic anhydride
D. Dacron

Categories Chemical Process Leave a comment

Parathion and Malathion are _____________________?

August 22, 2021February 14, 2019 by admin
Parathion and Malathion are _____________________?

A. Pesticides
B. Plasticisers for unsaturated polyesters
C. Pain-relieving drugs (analgesic)
D. Tranquilisers

Categories Chemical Process Leave a comment

Which of the following is not produced on commercial scale from sea water ?

August 22, 2021February 14, 2019 by admin
Which of the following is not produced on commercial scale from sea water ?

A. Bromine
B. Magnesium compounds
C. Potassium compounds
D. Sodium sulphate

Categories Chemical Process Leave a comment

Glycerine can be obtained from ________________ ?

August 22, 2021February 14, 2019 by admin
Glycerine can be obtained from ________________ ?

A. Fat
B. Naphthalene
C. Cumene
D. Sucrose

Categories Chemical Process Leave a comment

Permanent hardness of water is due to the presence of calcium & magnesium __________________?

August 22, 2021February 14, 2019 by admin
Permanent hardness of water is due to the presence of calcium & magnesium __________________?

A. Bi-carbonates
B. Sulphates & chlorides
C. Carbonate
D. None of these

Categories Chemical Process Leave a comment

Deaeration of water in its treatment is necessary, as it___________________?

August 22, 2021February 14, 2019 by admin
Deaeration of water in its treatment is necessary, as it___________________?

A. Minimises its turbidity
B. Helps in controlling its taste and odour
C. Minimises its corrosiveness
D. None of these

Categories Chemical Process Leave a comment

Use of water having dissolved oxygen in boilers promotes___________________?

August 22, 2021February 14, 2019 by admin
Use of water having dissolved oxygen in boilers promotes___________________?

A. Corrosion
B. Sequestration
C. Scale formation
D. None of these

Categories Chemical Process Leave a comment
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