In Kraft process of paper manufacture, white cooking liquor consists of caustic soda________________?
(A) Sodium sulphide & sodium carbonate
(B) Sodium sulphite & sodium carbonate
(C) Sodium sulphite & sodium sulphide
(D) None of these
Percentage of alcohol in beer may be around ______________________ percent?
(A) 2-8
(B) 18-23
(C) 27-32
(D) 1-4
Fatty material used in soap making is _______________________?
(A) Fatty acid
(B) Fatty alcohols
(C) Tallow
(D) Detergents
The main use of activated carbon in water treatment is to control ___________________?
(A) Bacterial growth
(B) Taste and odour
(C) Turbidity
(D) None of these
Separation of fresh water from sea water can be done by the _______________ operation ?
(A) Osmosis
(B) Reverse osmosis
(C) Absorption
(D) Adsorption
Platinum catalyst used in the earlier days of sulphuric acid manufacture by contact process suffers from the drawback like_________________?
(A) High cost
(B) Fragile nature
(C) Easy poisoning tendency
(D) All A,
Presence of H2S in raw water (to be chlorinated) results in the_____________________?
(A) Reduced softening capacity of zeolite
(B) Increased dosage of chlorine to provide a disinfecting residual in the water
(C) Easy removal of its hardness
(D) None of these
Hydrogen gas is not produced commercially (for nitrogenous fertiliser manufacture) by _____________________?
(A) Iron-steam reaction
(B) Electrolysis of water
(C) Steam reforming of naphtha
(D) Its cryogenic separation from coke oven gas