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Chemistry

Chemistry
Saccharin is made up of

Toluene
Phenol
Propane
Butane

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Chemistry
For a spontaneous chemical process, the free energy change is

Zero
Negative
Depends on whether the reaction is exothermic or endothermic
Positive

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Chemistry
Cement is formed by strongly heating a mixture of

Clay and graphite
Limestone and graphite
Chalk and graphite
Limestone and clay

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Chemistry
When water itself combines chemically with some element or mineral it is called

Desilication
Hydration
Oxidation
Carbonation

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Chemistry
Which method will be employed to test the hardness of water?

Formation of lather with soap
Distillation
None of these
Boiling

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Chemistry
The molecular mass of a gas is

Half its vapour pressure
Equal to its vapour pressure
Not related to its vapour pressure
Twice its vapour pressure

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