Created by

Chemistry instructor

CBSE Class 11

Basic concepts CBSE 11

The Quiz is a CBSE / NCERT Level quiz containing 15 questions.

The majority of questions are conceptual questions, and a few questions are numerical.

The time allotted for the quiz is 20 minutes.

The number of attempts remaining is 1

1 / 5

1. The number of oxygen atoms in 6.4 g of SO2 is:

a) 6 × 10²³

b) 12 × 10²³

c) 11 × 10²³

d) 1.2 × 10²³

2 / 5

2. 25 mL of a solution of barium hydroxide on titration with 0.1 molar solution of hydrochloric acid gave a Titre value of 35 mL The molarity of barium hydroxide solution was:

a) 0.07

b) 0.14

c) 0.28

d) 0.35

3 / 5

3. A mole of any substance is related to

a) Number of particles

b) All of these

c) Mass of a substance

d) Volume of gaseous substances

4 / 5

4. What volume of hydrogen gas at 273 K and 1 atm pressure will be consumed in obtaining 21.6 g of elemental boron (atomic mass = 10.8) from the reduction of boron trichloride by hydrogen?

a) 67.2 L

b) 89.6 L

c) 44.8 L

d) 22.4 L

5 / 5

5. Number of atoms in 560 g of Fe (atomic mass 56 g/mol) is:

a) Half that of 20 g H

b) Twice that of 70 g N

c) Both are correct

d) None is correct

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Basic concepts CBSE MCQ

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Basic concepts CBSE MCQ

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