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Chemistry

Chemistry
Aerated water contains

H2
SO2
NO2
CO2

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Chemistry
Antacids are found in drugs that give relief to

Headache
Eye sight
Stomach ache
Acne

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Chemistry
When a spoon is to be electroplated with nickel the spoon is

Made cathode and a pure nickel red, the anode
Coated with nickel sulphate and dried
Made anode and a pure nickel rod, the cathode
Dipped in a nickel sulphate solution

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Chemistry
Main pollutants released from iron and steel industry are

CO, CO2 and SO2
CO2, H2S and NO2
NO, SO3 and H2S
CO2, NO2 and SO3

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Chemistry
Cement is made hard with

Hydration and dissociation of water
Dehydration
Dissociation of water
Polymerisation

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Chemistry
'Plaster of Paris' is made by partial dehydration of

Blue vitriol
Gypsum salt
Green vitriol
Epsom salt

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