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Chemistry

Chemistry
Which of the following has pH value 7?

Pure Water
H2SO4
HCl
Sodium Carbonate

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

Oxidation
Hydration
Carbonation
Desilication

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Chemistry
Surface water is a better source of drinking water because it is poor in

Algae
Arsenic
Dust
Bacteria

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Chemistry
Which of the following elements is obtained from sea weeds ?

Iodine
Argon
Vanadium
Sulphur

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Chemistry
Iron rusts quickly in

River water
Rain water
Distilled water
Sea water

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

None of these
Formation of lather with soap
Distillation
Boiling

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