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

Metallic soaps with frothing agent and free stearic acid to achieve transparency
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
None of these

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Chemical Process
The chamber process is

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

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