Chemical Engineering - Chemical Process

36. 

Which is the most suitable dye for synthetic fibres ?

A. Acid dye
B. Azoic dye
C. Pigment dye
D. Mordant dye

Answer: Option A

Explanation:

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37. 

Pick out the wrong statement.

A. Cold rubber (SBR) is superior as compared to hot rubber (SBR).
B. Polymerisation temperature can modify the properties of SBR.
C. Production of cold SBR employs lower pressure as compared to that of hot SBR.
D. none of these.

Answer: Option D

Explanation:

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38. 

Pick out the wrong statement.

A. Strongly caking coal should not be used in the Lurgi gasifier.
B. Acetylene gas can not be used for illumination purpose.
C. Water gas is called blue gas because of the color of the flame, when it is burnt.
D. Gaseous fuels require less percentage of excess air for combustion as compared to liquid fuels.

Answer: Option B

Explanation:

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39. 

Hydrolysis of sugar is called

A. hydration
B. inversion
C. esterification
D. none of these

Answer: Option B

Explanation:

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40. 

Sulphuric acid completely saturated with sulphur trioxide is called

A. concentrated sulphuric acid.
B. oleum.
C. sulphurous acid.
D. dilute sulphuric acid.

Answer: Option A

Explanation:

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