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Class 11 Chemistry: Some Basic Concepts of Chemistry — Chapter Test 1

Class 11 • Chemistry • Some Basic Concepts of Chemistry • Chapter Test

MediumFREE

15

Questions

20 min

Duration

15

Marks (1 each)

No

Negative marking

Original practice questions with full solutions by ExamPortal.

Instructions

  • • Read each question carefully and pick the correct answer.
  • • You can mark questions for review and come back to them.
  • • Answers are saved automatically.
  • • The test is submitted automatically when time runs out.

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SYLLABUS & QUESTION BLUEPRINT

Sample Practice Questions

Preview 5 sample questions from this 15-question test. Test your knowledge below or take the full exam in timed CBT mode.

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Question 1 of 15
One mole of any substance contains:
A
6.022×10236.022 \times 10^{23} particles
B
6.022×10226.022 \times 10^{22} particles
C
11 particle
D
3×1083 \times 10^8 particles
View Correct Answer & Step-by-Step Solution
Correct Option:(A)6.022×10236.022 \times 10^{23} particles

Detailed explanation is available inside the official test attempt review.

Question 2 of 15
The molar mass of water (H₂O) is:
A
16 g/mol
B
18 g/mol
C
20 g/mol
D
10 g/mol
View Correct Answer & Step-by-Step Solution
Correct Option:(B)18 g/mol

Detailed explanation is available inside the official test attempt review.

Question 3 of 15
The number of moles in 44 g of CO₂ is:
A
0.5
B
1
C
2
D
44
View Correct Answer & Step-by-Step Solution
Correct Option:(B)1

Detailed explanation is available inside the official test attempt review.

Question 4 of 15
At STP, one mole of an ideal gas occupies (old convention, 273 K, 1 atm):
A
11.2 L
B
22.4 L
C
44.8 L
D
1 L
View Correct Answer & Step-by-Step Solution
Correct Option:(B)22.4 L

Detailed explanation is available inside the official test attempt review.

Question 5 of 15
The law of definite proportions was given by:
A
Dalton
B
Proust
C
Lavoisier
D
Avogadro
View Correct Answer & Step-by-Step Solution
Correct Option:(B)Proust

Detailed explanation is available inside the official test attempt review.

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Frequently asked questions

How many questions are there in Class 11 Chemistry: Some Basic Concepts of Chemistry — Chapter Test 1?

There are 15 questions to answer in 20 min. Each correct answer gives 1 mark, for a total of 15 marks.

Is there negative marking?

No. Wrong answers do not lose marks, so attempt every question.

Is this mock test free?

Yes, it is completely free. Just log in with your email to start.

What does this test cover?

It covers the chapter "Some Basic Concepts of Chemistry" of Class 11 Chemistry. All questions are original, with a full solution for each.

Will I see my result and the solutions?

Yes. Right after you submit you get your score, accuracy, rank and percentile, and you can review every question with the correct answer and a step-by-step explanation.

Can I take this test again?

Yes, you can retake it as many times as you like and compare your scores.