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

Metallic soaps with frothing agent and free stearic acid to achieve transparency
None of these
Metallic soaps with frothing agent from which glycerine has not been recovered
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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Chemical Process
The chamber process is

None of these
Preferred over contact process for producing 98 to 100% H₂SO₄ and various oleums
Non-catalytic and operates only on pyrites
A batch process for directly producing high strength (98 to 100%) H₂SO₄

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Chemical Process
Use of hydrated lime in water treatment

Is to adjust the pH value
After filtration, combats the corrosive-ness of water due to the presence of O₂ & CO₂
All of these
Before filtration, reduces the bacterial load on filters

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