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CHEMICAL PROCESS

Chemical Process
Hydrazine is used in water treatment for the removal of

Dissolved oxygen
Chlorinous taste
Colloidal impurities
Turbidity

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Chemical Process
Very dilute solutions are generally used in fermentation reactions for which the optimum temperature range is __________ °C.

-5 to 0
30 to 50
5 to 10
75 to 80

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Chemical Process
Chloramines are used in water treatment for

Control of bacteria
Corrosion control
Disinfection and control of taste & odour
Removing turbidity

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Chemical Process
Pick out the endothermic reaction out of the following.

CO + 3H₂ = CH₄ + H₂O
C+1/2O₂ = CO
CaCO₃ = CaO + CO₂
CO +1/2O₂ = CO₂

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Chemical Process
Pick out the exothermic reaction out of the following:

All of these
MgCO₃ = MgO + CO₂
C + H₂O = CO + H₂
CaC₂ + H₂O = Ca(OH)₂ + C₂H₂

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