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Chemistry

Chemistry
The polymer used in making plastic crockery is

Melamine
Decron
Bakelite
Nylon

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Chemistry
In a Carbonyl group a carbon atom makes double bond with

None of these
Hydrogen
Oxygen
Carbon

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Chemistry
The metal present in vitamin B12 is

Mo
Mg
Fe
Co

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Chemistry
Rock salt is a mineral containing

Potassium
Magnesium
Sodium
Iron

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

Lead
Oxides of nitrogen
Carbon monoxide
Polyclinic hydrocarbons

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Chemistry
Which of the following is used to increase the anti-knocking property of petrol ?

Triethyl lead
Tetraethyl lead
Trimethyl lead
Tetramethyl lead

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