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Chemistry

Chemistry
The process which does not evolve CO2 in air is

Organic delay
Burning
Breathing
Photosynthesis

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Chemistry
Cement is usually a mixture of :

Calcium silicate and calcium aluminate
Calcium silicate and calcium ferrate
Lime stone and silicon dioxide
Calcium aluminate and calcium ferrate

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Chemistry
Trinitrotoluene is

Used as an abrasive
Used to melt metals
Used as an explosive
Used to fuse two metals

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Chemistry
In electro-refining, the pure metal is deposited on

Vessel
Cathode
Anode
Electrolyte

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Chemistry
Which one of the following has greatest mass ?

Electron
Proton
Neutron
Hydrogen nucleus

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Chemistry
Persons working in cement plants and lime stone quarries are prone to disease like

Asthma
Silicosis
Cancer
Pneumoconiosis

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