Chemical Process
Enzymes are

All of these
Catalyst for temperature sensitive reactions
Proteins with high molecular weight (around 10, 000)
Derived from living organisms

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

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

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