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Chemical Process

Chemical Process
Chemical name of soda ash is

Sodium bicarbonate
None of these
Potassium carbonate
Sodium thiosulphate

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Chemical Process
Presence of H₂S in raw water (to be chlorinated) results in the

Easy removal of its hardness
Increased dosage of chlorine to provide a disinfecting residual in the water
Reduced softening capacity of zeolite
None of these

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Chemical Process
Mercury electrolytic cell produces 50-70% NaOH solution. Its operating temperature is __________ °C.

150-200
60-70
250-300
25

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Chemical Process
Na₂CO₃.10H₂O is called

Soda ash
Slaked lime
Quicklime
Washing soda

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Chemical Process
Glycerine can be obtained from

Naphthalene
Sucrose
Cumene
Fat

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Chemical Process
Dry ice (solidified CO₂) is used for the

Liquefaction of natural gas
Liquefaction of permanent gases
None of these
Storage & shipment of frozen foods and ice-creams

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