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ICSE Class 9 The Language of Chemistry MCQ New

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ICSE Class 9 The Language of Chemistry MCQ

ICSE Class 10 All Subject MCQ

ICSE Class 9 The Language of Chemistry MCQ HERE

If a neutral atom has two shells completely filled up, then atomic number of the atom is ____.

8

10

18

20

The subscript (s) mentioned after a symbol or formula of a substance, in a chemical equation indicates ____.

solution

solid

sublimate

solute

Chlorine molecule is a ____.

mono atomicmolecule

diatomic molecule

triatomic molecule

tetra atomic molecule

Atomicity of sulphur is ____.

2

4

6

8

The number of valence electrons in neon atom are ____.

10

8

2

6

A chemical equation is represented by using only formulae.
True
False

The number of electrons in an atom is 8 and the number of protons is 7. Then the charge on an atom will be ____.

8

+1

-1

7





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