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Some Basic Concepts Of Chemistry

Question
CBSEENCH11005021
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Define the following:
Precision and accuracy

Solution
Precision and Accuracy: Precision refers for the closeness of the set of values obtained from identical measurements of a quantity. Accuracy refers to the closeness of a single measurement to its true value.

Some More Questions From Some Basic Concepts of Chemistry Chapter

What is the number of significant figures in 0.0026?

What is the number of significant figures in 9.984?

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

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

Express 0.0468 in scientific notation.

What does SI units stand for?

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

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

What are SI units of the following:

(i) Density    
(ii) Molarity          
(iii) Energy    
(iv) Temperature ?

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