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Chemistry

Chemistry
The process which does not evolve CO2 in air is

Organic delay
Breathing
Burning
Photosynthesis

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Chemistry
The value of Avogadro Number is

6.023 × 1024
6.023 × 1022
6.023 × 1025
6.023 × 1023

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Chemistry
The following are the half lives of four active isotopes. Which one of the following is the most dangerous to handle?

100 years
3 billion years
0.01 minute
13 days

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Chemistry
The gas liberated in the Bhopal gas tragedy was:

Acetylene
Pheynl isocynate
Methyl isocynate
Ethylene

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Chemistry
The maximum number of isomers for an alkene with molecular formula C4H8 is

5
3
2
4

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Chemistry
What particles move around the nucleus of an atom and are negatively charged?

Electrons
Neutrons
Positrons
Protons

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MORE MCQ ON Chemistry

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