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Chemistry

Chemistry
In vulcanisation process, rubber can be hardened by adding

Sulphur
Alcohol
Nitrogen
Silicon

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Chemistry
What is the mass percentage of carbon in carbon dioxide (CO2)

0.273
0.323
0.158
0.201

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Chemistry
The coloured discharge tubes for advertisement mainly contain

Argon
Neon
Xenon
Helium

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Chemistry
Who developed Hydrogen Bomb?

Samuel Cohen
Wernher Von Braun
Edward Teller
J. Robert Oppen Heimer

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Chemistry
The nucleus of a hydrogen atom consists of

1 proton + 2 neutron
1 neutron only
1 proton only
1 electron only

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Chemistry
Which one of the following minerals is found in Monazite sand ?

Thorium
Sodium
Potassium
Uranium

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