EASY
9th CBSE
IMPORTANT
Earn 100

When a compound contains both metal and non-metal elements the name of comes first.

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Important Questions on Atoms and Molecules

EASY
9th CBSE
IMPORTANT
Air conditioners, fluorescent lamps and printers, etc. are generators of _____. (negative ion / positive ion)
MEDIUM
9th CBSE
IMPORTANT
Who was the first Indian Philosopher who had postulated that matter is divisible?
EASY
9th CBSE
IMPORTANT
Why is the symbol of silver written as Ag?
EASY
9th CBSE
IMPORTANT
What do you mean by the atomicity of a molecule?
MEDIUM
9th CBSE
IMPORTANT
What do you mean by saying that the molecular mass of oxygen is 32?
MEDIUM
9th CBSE
IMPORTANT
If 100 g of calcium carbonate on heating produces 44g of carbon dioxide, how much quick lime will be formed?
EASY
9th CBSE
IMPORTANT
What was the postulate of Dalton 's atomic theory about the masses of atom?
EASY
9th CBSE
IMPORTANT
What is the atomic mass unit amu?