Atoms and Molecules MCQ Practice Test – Science Class IX (Free)

Atomic mass unit is equal to

Which Indian Philosopher proposed that matter (Padarth) is made up of very small particles called “parmanu”?

Dalton’s symbol ‘

’ represents

Which one of the following is not a poly atomic ion?

Which law of chemical combination was given by Lavoisier?

An anion has

How many moles of oxygen atoms are present in

?

Which one of the following is trivalent cation?

Which one of the following is not a postulate of Daltons atomic theory?

All matter is made up of tiny particles called atoms
Atom can be divided in to 3 sub atomic particles, electrons, protons and neutrons
Atoms can neither be created nor be destroyed
All atoms of an element are identical in all respects

1 mole of a substance is equal to

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