Chemical Process - Chemical Engineering Questions and Answers

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Anion exchanger is regenerated usually with

NaOH

H₂SO₄

Hydrazine

Alum solution

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Cation exchanger is regenerated usually with

NaOH

H₂SO₄

Hydrazine

Alum solution

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Sulphuric acid solution having a specific gravity of 1.20 at room temperature is used mainly for the

Fertiliser manufacture

Car battery solution

Synthesis of oleum

Water treatment

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Glycerine is recovered from lye by

Evaporation followed by vacuum distillation

Liquid extraction technique

Extractive distillation technique

None of these

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Phenol formaldehyde is produced by condensation polymerisation. It is also known as

Teflon

Bakelite

Polyester

Nylon-66

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Conversion of CO to CO₂ by steam in presence of a catalyst is called

Steam reforming

Shift conversion

Steam gasification

None of these

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__________ are added in lacquers to remove film brittleness and to improve adhereness.

Film forming materials

Plasticisers

Diluents

Solvents

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Temporary hardness of water can be removed by

Addition of alum (a coagulant)

Boiling

Filtration (through gravity sand filter)

Addition of lime

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Permanent hardness of water can be removed by

Simply boiling

Adding alum

Passing it through cation & anion exchangers

All of the above