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Chemistry Online Test

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Chemistry 12th class

1 / 10

The brown gas formed when metal reduces HNO3 is.

2 / 10

Potassium oxides is a _________

3 / 10

The gas filled in fluorescent tube is ?

4 / 10

The chemical compositions of cinnabar is ____.

5 / 10

The milk of magnesia is used for the treatment of ____.

6 / 10

The total number of transitions elements is:

7 / 10

The oxide of Beryllium is ________.

8 / 10

First transitions series starts with:

9 / 10

Silver bromide is used in ____.

10 / 10

The variable valency is the characteristic of _______?

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