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Chemistry

Chemistry
The hydronium ion is

H3O+
HO -
H+
H2+

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Chemistry
Which one of the following nonmetals shows allotropy in the liquid state?

Bromine
Sulphur
Phosphorous
Carbon

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Chemistry
Epsom salt is used

In softening water
As purgative
In making tooth paste
In paper industry

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Chemistry
Which of the following is not a chemical reaction'?

Conversion of water into steam
Digestion of food
Burning of paper
Burning of coal

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Chemistry
Biofertilizers convert nitrogen to ________ .

Ammonia
Nitrates
Nitrogenase
Amino acids

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Chemistry
What is the atomic number of Oxygen

8
12
5
22

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MORE MCQ ON Chemistry

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