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Chemistry

Chemistry
Gobar gas mainly contains

Hydrogen sulphide
Carbon monoxide
Methane
Carbon dioxide

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Chemistry
Which one of the following organic compound is used to remove stains of iron compounds?

Phthalic acid
Benzoic acid
Cinnamic acid
Oxalic acid

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Chemistry
"Paramagnetism" is the property of

Completely filled electronics subshells
Paired electrons
Unpaired electrons
Completely vacant electronic subshells

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Chemistry
A fertile soil is likely to have a pH of

14
43989
3
9

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Chemistry
Which of the following chemical materials is responsible for the depletion of ozone layer in the atmosphere ?

Nitrous oxide
Chlorofluorocarbon
Sulphur dioxide
Carbon dioxide

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Chemistry
The liquid waste from kitchens and baths, of residences is known as :

Domestic sewage
Sullage
Storm water
Refuse

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