CHEMICAL PROCESS QUIZ

Which of the following impurities in feed water for high pressure boiler is the most detrimental?

Dissolved oxygen

Suspended salt

Silica

Dissolved salt

TRUE ANSWER : ?
YOUR ANSWER : ?

Refractory bricks burnt at very high temperature have got

Greater resistance to corrosion by slags

Less resistance to corrosion by slags

High spalling tendency

None of these

TRUE ANSWER : ?
YOUR ANSWER : ?

Phenol formaldehyde

Employs condensation polymerisation

Is an abrasive material

Employs addition polymerisation

Is a monomer

TRUE ANSWER : ?
YOUR ANSWER : ?

A cane sugar factory having sugar production rate of 10 tons/day will produce about __________ tons/day of bagasse (after consumption by the factory for heating etc.).

1

40

25

10

TRUE ANSWER : ?
YOUR ANSWER : ?

Zeolite removes both temporary as well as permanent hardness of water by precipitating calcium and magnesium present in water as insoluble zeolites. Used zeolite is regenerated by flushing with the solution of

Magnesium chloride

Calcium sulphate

Sodium chloride

Sodium sulphate

TRUE ANSWER : ?
YOUR ANSWER : ?

In sulphate pulp manufacture, the pressure and temperature in the digestor is

10 atm., 170-180°C

L atm., 800°C

10 atm., 800 °C

1 atm., 170 - 180°C

TRUE ANSWER : ?
YOUR ANSWER : ?

Fatty material used in soap making is

Fatty acid

Fatty alcohols

Tallow

Detergents

TRUE ANSWER : ?
YOUR ANSWER : ?

SO₂ is bubbled through hot sugar cane juice to

Act as an acidifying agent

Increase the crystal size

Increase its concentration

Increase the amount of molasses

TRUE ANSWER : ?
YOUR ANSWER : ?

Sand and __________ is fused at 1300°C, to produce sodium silicate.

Soda ash

Coke

Sodium sulphate

Limestone

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following is a co-product during the manufacture of caustic soda by electrolysis of brine?

H₂

NaHCO₃

Na₂CO₃

None of these

TRUE ANSWER : ?
YOUR ANSWER : ?

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