TextBook Solutions for Assam Board Class 11 Chemistry Chemistry Part I Chapter 1 Some Basic Concepts Of Chemistry

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TextBook Solutions for Assam Board Class 11 Chemistry Chemistry Part I Chapter 1 Some Basic Concepts Of Chemistry

Question 1

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Define the term significant figures.

Solution

Significant figures are meaningful digits which are known with certainty.

Question 2

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What is the number of significant figures in 0.0026?

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Question 3

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What is the number of significant figures in 9.984?

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Question 4

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Express the Avogadro's number (6·023×10²³) upto three significant figures.

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Question 5

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What is the result of (5.472 - 1.12) to the appropriate number of signficant figures?

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Question 6

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Express 0.0468 in scientific notation.

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Question 7

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What does SI units stand for?

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Question 8

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What is the relation between temperature in Kelvin (K) and temperature on centigrade scale?

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Question 9

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What is the unit of force in SI units?

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Question 10

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The popular unit of pressure is atmosphere, how is it related to pascal?