Chemical Process
Economics of 'Solvay Process' depends upon the efficiency of

Carbonating tower
Ammoniation of salt solution
Ammonia recovery
Ammonia recovery and size of the plant

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Chemical Process
Pick out the true statement pertaining to water treatment.

Normally, the turbidity is removed by adding a coagulent prior to sedimentation
Slow sand filters can remove colour completely
Activated carbon can be used for taste & odour control without subsequent filtration
Application of activated carbon reduces the temporary hardness of water

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Chemical Process
Transparent soaps (e.g. Pears) are

None of these
Metallic soaps with frothing agent from which glycerine has not been recovered
Metallic soaps with frothing agent and free stearic acid to achieve transparency
Usually soft soap (made from coconut oil) in which cane sugar & alcohol are added and finally washed with methylated spirit to achieve transparency

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