Chemical Process
Which of the following is used as a coagulant in treating turbid water?

Ferric sulphate
Chlorine
Activated carbon
Calcium sulphate

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Chemical Process
Nylon 66 is so named because the

Polymer was first synthesised in 1966
Number of nitrogen atoms between two carbon atoms are 6
Average degree of polymerisation of the polymer is 1966
Number of carbon atoms between two nitrogen atoms are 6

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