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Chemical Process

Chemical Process
Main constituents of portland cement are calcium aluminate and

Gypsum
Silicates
Carbonates
Sodium silicate

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Chemical Process
Starting raw material for the manufacture of alum is

Bauxite
Ammonium bicarbonate
Alumina
Gypsum

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Chemical Process
Solvay process is used for the manufacture of

Soda ash
Caustic potash
Soda lime
Caustic soda

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Chemical Process
Ultimate analysis of coal determines its __________ content.

Carbon, ash, sulphur & nitrogen
Carbon, hydrogen, nitrogen & sulphur
Carbon, sulphur, volatile matter & ash
Carbon, volatile matter, ash & moisture

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Chemical Process
Oxygen is produced by fractionation of air using __________ process.

Linde's
Claude's
None of these
Either A or B

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Chemical Process
Sudden temperature fluctuation does not affect pyrex glass, because of its

Both B and C
High co-efficient of expansion
High melting point
Low co-efficient of expansion

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