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Chemical Process

Chemical Process
Oxygen is separated by distillation from air after its liquefaction. The boiling point of oxygen is about __________ °C.

-83
-183
-196
-218

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

Sodium borate
Caustic soda
Sodium silicate
Sodium tripolyphosphate (STPP)

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Chemical Process
Refractory bricks burnt at very high temperature have got

Greater resistance to corrosion by slags
High spalling tendency
None of these
Less resistance to corrosion by slags

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Chemical Process
Bromine is used in the preparation of

Fire proofing agents
Fire extinguishing compounds
All of these
Dyes and antiknock compounds

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Chemical Process
Carboxymethyl cellulose (CMC) is added in detergents to act as a/an

Optical brightening agent
Anti soil redeposition agent
Surfactant
Builder

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Chemical Process
Enzymes are organic catalysts used in the __________ reactions.

Photochemical
Electrochemical
Biochemical
Chemical

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