The end bleaching agent used to move last traces of colour bodies from the pulp is

Bleaching action of bleaching powder is due to its __________ properties.

A

Reducing

B

Oxidising

C

Disinfecting

D

None of these

Which one of the following is commonly used for pulp bleaching in the paper industry?

A

Mild sulphuric acid

B

Glucose isomerase

C

peroxide

D

Iodine and water

Bleaching of paper pulp is done with

A

Activated clay

B

Bromine

C

Chlorine or chlorine dioxide

D

Magnesium sulphite

The most economical pulp for the production of newsprint would be the __________ pulp.

A

Groundwood

B

Sulphate

C

Sulphite

D

Semichemical

The most commonly used bleaching agent is

A

alcohol

B

carbon dioxide

C

chlorine

D

sodium chlorine

Most commonly used bleaching agent is

A

Sodium chloride

B

Alcohol

C

Carbon dioxide

D

Chlorine

Hydrogen peroxide _____ as a bleaching agent because it effectively whitens a variety of fibres abd surfaces.

A

used

B

is used

C

is using

D

that it use

Chlorine acts as a bleaching agent only in the presence of

A

Dry air

B

Pure oxygen

C

Moisture

D

Sunlight

Which of the following is a bleaching agent added in the detergents to facilitate removal of stains caused due to blood, tea etc?

A

Sodium silicate

B

Sodium borate

C

Sodium tripolyphosphate (STPP)

D

Caustic soda

A point on a connecting link (excluding end points) of a double slider crank mechanism traces a

A

Straight line path

B

Hyperbolic path

C

Parabolic path

D

Elliptical path

The end bleaching agent used to move last traces of colour bodies from the pulp is

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