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CHEMISTRY

Chemistry
What is the most commonly used substance in fluorescent tubes?

Mercury vapour and argon
Sodium oxide and argon
Sodium vapour and neon
Mercury oxide and neon

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Chemistry
Tear gas is :

Nitrous oxide
Chloroprene
Carbonyl chloride
Bleaching powder

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Chemistry
Tetra ethyle lead (TEL) is

A reductant
An antioxidant
An antiknock compound
A catalyst in burning fossil fuel

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Chemistry
The drug ‘Marijuana’ is a

Sedative
Hallucinating substance
Tranquillizer
Mental stimulant

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Chemistry
The Refrigerant 'FREON' is

Calcium Tetra Fluoride
Fluorspar and Felspar
Hydrofluosilicic Acid
Difluoro Dichloro Methane

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