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Chemistry

Chemistry
The gas that is used in the manufacture of vanaspati ghee is :

Hydrogen
Oxygen
Nitrogen
Carbon dioxide

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Chemistry
Number of6.023 × 1020 atoms present in one mole of a gas at STP is

'6.023 × 10–23
6.023 × 1020
6.023 × 1023
'6.023 × 10–20

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Chemistry
Which of the following is the petroleum wax ?

Carnauba wax
Paraffin wax
Bees wax
Jojoba wax

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Chemistry
Polythene is polymer of

Propylene
Acetylene
Ethylene
Aniline

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Chemistry
Many people died in London in 1952 as result of air pollution producing

Sleet
Mist
Smog
Fog

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Chemistry
Carbon footprint can be reduced by

Using energy efficient appliances
All of these
Commuting by public transport
Recycling waste materials

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MORE MCQ ON Chemistry

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