MEDIUM
NEET
IMPORTANT
Earn 100

Rearrange the following (I to IV) in the order of increasing masses and choose the correct answer (Atomic masses: and
molecule of oxygen.
atom of nitrogen.
molecular weight of oxygen.
atomic weight of copper.
(a)
(b)
(c)
(d)

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Important Questions on Some Basic Concepts of Chemistry
MEDIUM
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The maximum number of molecules is present in

MEDIUM
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How many moles of magnesium phosphate, will contain mole of oxygen atoms?

HARD
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IMPORTANT
The mass of carbon anode consumed (giving only carbon dioxide) in the production of of aluminium metal from bauxite by the Hall–Héroult process:

MEDIUM
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of water vapour at , when condensed to water, occupies an approximate volume of:

HARD
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IMPORTANT
of iodoform reacts with to produce a gas whose volume at is:

MEDIUM
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IMPORTANT
The minimum quantity, in grams, of needed to precipitate of will be nearly:

EASY
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of pure dry is subjected to silent electric discharge. If only of it is converted to , volume of the mixture of gases and ) after the reaction will be _____ and after passing through turpentine oil will be _____.

EASY
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IMPORTANT
of a gas is produced at by the action of of alcohol with methyl magnesium iodide. The molecular mass of alcohol is:
