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Chemistry

Chemistry
The gas used for artificial fruit ripening of green fruit is

Methane
Acetylene
Ethane
Ethylene

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Chemistry
The most important ore of aluminium is

monazite
haematite
magnetite
bauxite

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Chemistry
Which of the following elements is not present in stainless steel?

Nickel
Chromium
Iron
Tungsten

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Chemistry
In silvery paints, the main constituent present is

White lead
Lead powder
Silver powder
Aluminium powder

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Chemistry
Which of the following in automobile exhaust can cause cancer?

Oxides of nitrogen
Polyclinic hydrocarbons
Lead
Carbon monoxide

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Chemistry
Which one of the following is commonly used for pulp bleaching in the paper industry?

Mild sulphuric acid
Glucose isomerase
Iodine and water
Hydrogen peroxide

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