Chapter 1: Some Basic Concepts of Chemistry MCQs | chemistry Class 11 CBSE

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Chapter 1: Some Basic Concepts of Chemistry MCQs | chemistry Class 11 CBSE | ByteNotes.in

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Question 1

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Which of the following is the SI unit of amount of substance?

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Question 2

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One mole of a substance contains exactly how many elementary entities?

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Question 3

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The Law of Conservation of Mass was put forth by:

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Question 4

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Which temperature scale has no negative values?

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Question 5

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The number of significant figures in 0.0052 is:

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Question 6

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The atomic mass standard currently used is based on:

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Question 7

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Which of the following is a homogeneous mixture?

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Question 8

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The molar mass of water (H₂O) is:

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Question 9

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Which of the following correctly converts 25°C to Kelvin?

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Question 10

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The number of significant figures in 100.0 is:

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Question 11

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Molarity is defined as:

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Question 12

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The Law of Multiple Proportions was proposed by:

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Question 13

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Which of the following properties is temperature-independent?

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Question 14

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The empirical formula of a compound represents:

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Question 15

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1 amu (atomic mass unit) is equal to:

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Question 16

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Which concentration unit is NOT affected by a change in temperature?

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Question 17

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According to Gay Lussac's Law, 100 mL of H₂ and 50 mL of O₂ react to produce water vapour. What volume of water vapour is produced?

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Question 18

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The formula mass of sodium chloride (NaCl) is:

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Question 19

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In the reaction N₂ + 3H₂ → 2NH₃, if 50 kg of N₂ and 10 kg of H₂ are mixed, the limiting reagent is:

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Question 20

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Which of the following ancient Indian texts deals with the formulation of mercury compounds and methods for extraction of metals?

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Chapter 1: Some Basic Concepts of Chemistry | MCQs

Which of the following is the SI unit of amount of substance?

One mole of a substance contains exactly how many elementary entities?

The Law of Conservation of Mass was put forth by:

Which temperature scale has no negative values?

The number of significant figures in 0.0052 is:

The atomic mass standard currently used is based on:

Which of the following is a homogeneous mixture?

The molar mass of water (H₂O) is:

Which of the following correctly converts 25°C to Kelvin?

The number of significant figures in 100.0 is:

Molarity is defined as:

The Law of Multiple Proportions was proposed by:

Which of the following properties is temperature-independent?

The empirical formula of a compound represents:

1 amu (atomic mass unit) is equal to:

Which concentration unit is NOT affected by a change in temperature?

According to Gay Lussac's Law, 100 mL of H₂ and 50 mL of O₂ react to produce water vapour. What volume of water vapour is produced?

The formula mass of sodium chloride (NaCl) is:

In the reaction N₂ + 3H₂ → 2NH₃, if 50 kg of N₂ and 10 kg of H₂ are mixed, the limiting reagent is:

Which of the following ancient Indian texts deals with the formulation of mercury compounds and methods for extraction of metals?

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