Chemistry · JEE

Some Basic Concepts in Chemistry Previous Year Questions for JEE

36+ syllabus-aligned questions available

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Goodmarks offers 36+ JEE-style PYQs for Some Basic Concepts in Chemistry with detailed solutions. While official past papers rotate yearly, our bank covers the same concepts, difficulty, and question formats tested in JEE Chemistry.

Previous year questions are the fastest way to understand how Some Basic Concepts in Chemistry is tested in JEE. Practise 36+ exam-pattern MCQs modelled on JEE Main and Advanced, with full solutions for every question.

Subtopics in Some Basic Concepts in Chemistry

Matter and its nature, Dalton's atomic theory
Concept of atom, molecule, element and compound
Laws of chemical combination, Atomic and molecular masses
Mole concept, molar mass, percentage composition, empirical and molecular formulae
Chemical equations and stoichiometry

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Q1ChemistryUnit 1: Some Basic Concepts in Chemistry

Volume of

N_{2},

in litres, liberated on heating 6.4 g of

N H_{4} N O_{2}

is:

Q2ChemistryUnit 1: Some Basic Concepts in Chemistry

What is the physical state of

\boldsymbol{P} \boldsymbol{C l}

late under normal condition?

Q3ChemistryUnit 1: Some Basic Concepts in Chemistry

Assertion Element can form different compound. Reason Any substance that contains only one kind of an atom is known as an element.

Q4ChemistryUnit 1: Some Basic Concepts in Chemistry

What is the density of wet air with

75 \%

relative humidity at 1 atm and

300 \mathrm{K}

? Given : vapour pressure of

H_{2} O

is 30 torr and average molar mass of air is

29 g / m o l

Q5ChemistryUnit 1: Some Basic Concepts in Chemistry

Which of the following is a true solution?

Q6ChemistryUnit 1: Some Basic Concepts in Chemistry

10 \mathrm{L}

of hard water required

0.56 \mathrm{g}

of lime (CaO) for removing hardness. Hence, the temporary hardness in ppm (part per million) of

C a C O_{3}

is :

Q7ChemistryUnit 1: Some Basic Concepts in Chemistry

Pressure remaining constant, the volume of a fixed mass of a gas is directly proportional to its absolute temperature. This law is popularly known as:

Q8ChemistryUnit 1: Some Basic Concepts in Chemistry

What are the materials which contain at least two pure substances and show the properties of their constituents called?

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Frequently asked questions

Why practise PYQs for Some Basic Concepts in Chemistry?

PYQs reveal recurring concepts, common traps, and the difficulty level JEE expects. Solving them builds exam temperament and time management.

Does Goodmarks have actual JEE past papers?

Our bank includes exam-style MCQs aligned with JEE Main Chemistry syllabus for Some Basic Concepts in Chemistry, covering the same topics as previous year papers.

How should I use PYQs for Some Basic Concepts in Chemistry?

Solve timed sets, review every explanation, note weak subtopics, then revisit with focused practice on Goodmarks.

Are PYQ solutions step-by-step?

Yes. Every question includes the correct answer and a detailed explanation showing the reasoning.