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Chemistry

Chemistry
Highly toxic gas which causes headache, visual difficulty, paralysis and even death is

All of these
O3
CO
CO2

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Chemistry
Percentage of lead in lead pencils is

80
40
31-66

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Chemistry
Milk is

Emulsion
Foam
Suspension
Gel

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Chemistry
By which organic compound all the oils are known ?

Protein
Ester
Hydrocarbon
Carbohydrate

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Chemistry
Gypsum is used for improvement of:

Alkaline soils
Saline soils
Acidic soils
Podsols

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Chemistry
The gas used in the artificial ripening of fruits is

Acetylene
Butane
Ethane
Methane

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