Chemical Process
Phenol is mainly used

As a plasticiser for unsaturated polyster
To produce polyester resin
To produce benzene
To produce phenol formaldehyde

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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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