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Chemistry Online Test

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Chemistry 12th class

1 / 10

The oxide of Beryllium is ________.

Basic

Amphoteric

none

Acidic

2 / 10

The total number of transitions elements is:

3 / 10

First transitions series starts with:

4 / 10

The gas filled in fluorescent tube is ?

5 / 10

Potassium oxides is a _________

Neutral

Acidic

Amphoteric

Basic

6 / 10

The brown gas formed when metal reduces HNO3 is.

N20

N2O5

NO2

7 / 10

The chemical compositions of cinnabar is ____.

ZnS

HgS

FeS

PbS

8 / 10

The variable valency is the characteristic of _______?

alkali metals

Halogens

noble gases

transitions elements

9 / 10

Silver bromide is used in ____.

iodine

Ceramics

Paints

Photography

10 / 10

Tincal is a mineral of

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