Q1ChemistryUnit 1: Some Basic Concepts in Chemistry
What is molecular formula of oleum?
Chemistry · JEE
Mole concept, molar mass, percentage composition, empirical and molecular formulae Short Tricks for JEE
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Mole concept, molar mass, percentage composition, empirical and molecular formulae focus drill
Solve 15 mixed MCQs for Mole concept, molar mass, percentage composition, empirical and molecular formulae, review every explanation, and note formulas you hesitated on.
NCERT line recall
For Inorganic, exact NCERT phrasing often matches the correct option — highlight one-liners during revision.
Balance then compare
In Physical Chemistry numericals, write the balanced relation first, then substitute values with units.
Syllabus context
Part of Some Basic Concepts in Chemistry in JEE Main Chemistry.
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Q2ChemistryUnit 1: Some Basic Concepts in Chemistry
The volume of 0.5 moles of a gas at 273
and pressure is:
Q3ChemistryUnit 1: Some Basic Concepts in Chemistry
The number of significant figures in
i.e., Avogadro's
number, is :
Q4ChemistryUnit 1: Some Basic Concepts in Chemistry
of a gas at of
weight
the mol.wt.of gas is:
Q5ChemistryUnit 1: Some Basic Concepts in Chemistry
Which of the following contains maximum number of atoms?
Q6ChemistryUnit 1: Some Basic Concepts in Chemistry
A metal M of atomic weight 54.94 g has a density of 7.42 g/cc. The apparent volume occupied by one atom of the
metal will be:
Q7ChemistryUnit 1: Some Basic Concepts in Chemistry
If repeated measurements give values close to one another, the number is:
Q8ChemistryUnit 1: Some Basic Concepts in Chemistry
The number of moles of sodium oxide in
620 g of it is:
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