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Chemistry

Chemistry
Non-stick kitchenwares are coated with

Silicon
PVC
Graphite
Teflon

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Chemistry
Which of the following metals has least melting point ?

Gold
Copper
Silver
Mercury

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Chemistry
Soap helps in better cleaning of clothes because

It reduces the surface tension of solution
Soap acts like catalyst
It gives strength to solution
It absorbs the dirt

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Chemistry
Which of the following gases is present under pressure in soft drinks?

Nitrous oxide
Nitrogen
Carbon dioxide
Oxygen

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Chemistry
Which of the following is not a donor atom?

Aluminium
Arsenic
Phosphorus
Antimony

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Chemistry
The chief constituent of natural gas is:

Methane
Propane
Nitrogen
Helium

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