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Chemistry

Chemistry
Periodic table contains how many periods

6
8
10
7

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Chemistry
What happens when a drop of glycerol is added to crushed KMnO4 spread on a paper ?

There is a crackling sound
The paper ignites
There is a violent explosion.
There is no reaction.

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Chemistry
The gas liberated in the Bhopal gas tragedy was:

Ethylene
Methyl isocynate
Acetylene
Pheynl isocynate

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Chemistry
Yellow Cake' an item of smuggling across border is

Unreformed gold
A crude from of cocaine
Uranium oxide
A crude from of heroin

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Chemistry
The chemical name of quartz is

Sodium phosphate
Calcium oxide
Calcium phosphate
Sodium silicate

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Chemistry
The half life period of an isotope is 2 hours. After 6 hours what fraction of the initial quantity of the isotope will be left behind?

1/3
1/6
1/8
1/4

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MORE MCQ ON Chemistry

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