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Chemistry

Chemistry
An inert gas mixed with oxygen given to patients suffering from restricted breathing is

Krypton
Argon
Helium
Radon

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Chemistry
In silvery paints, the main constituent present is

White lead
Lead powder
Aluminium powder
Silver powder

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Chemistry
Which of the following is used as a preservative to protect processed food?

Saccharin
BHT
Sodium sulphate
Sodium metabisulphite

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Chemistry
The material which can be deformed permanently by heat and pressure is called a

polymer
thermoset
thermoplastic
chemical compound

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Chemistry
The iron ore which contains 72% of iron is :

Limonite
Siderite
Haematite
Magnetite

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Chemistry
Glycol is added to aviation gasoline because it

Reduces consumption of petrol
Reduces evaporation of petrol
Increases efficiency of petrol
Prevents freezing of petrol

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