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Chemistry

Chemistry
Vulcanization of rubber is carried out by adding

Carbon
Sulphur
Ozone
Phosphorus

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Chemistry
The items amenable to detection by soft x-rays are

narcotics
genuine coins from counterfeit coins
lead in bullets
contrabands

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Chemistry
The major harmful gas emitted by automobile vehicles which causes air pollution is

Carbon dioxide
Carbon Monoxide
Methane
Ozone gas

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Chemistry
J.J. Thomson’s proposed model of atom is generally called ________ model.

Cream and pudding
Cream and cake
Plum and cake
Plum and pudding

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Chemistry
A detergent is a

Soap
Cleansing agent
Drug
Catalyst

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Chemistry
The metallic constituents of hard water are :

Iron, tin and calcium
Magnesium, tin and iron
Magnesium, calcium and tin
Calcium, magnesium and iron

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