Exams › NEET › Chemistry

Which of the following rules regarding the significant figures and calculations involving them is not correct?

1. The result of an addition or subtraction is reported to the same number of decimal places as present in number with least decimal places.
2. Result of multiplication or division should have same number of significant figures as present in most precise figure
3. The result of multiplication or division should be rounded off to same number of significant figures as present in least precise figure.
4. The non-significant figures in the measurements are rounded off.

Correct answer: Result of multiplication or division should have same number of significant figures as present in most precise figure

Solution

In multiplication or division, the result must be rounded to the same number of significant figures as the least precise factor. So the statement saying it should match the most precise figure is incorrect. The other rules are standard significant-figure conventions.

Related NEET Chemistry questions

• Which of the following statements is/are correct? This question has multiple correct options
• Calculate the \( \% \) composition of Carbon in \( C O_{2} . \) Molar mass is 44.01
• \( 16.8 \mathrm{g} \) of metal carbonate on thermal decomposition gave 8 g of metallic oxide and \( 8.8 \mathrm{g} \) of carbon dioxide. They follow:
• Calculate the percent composition of carbon in \( C_{6} H_{12} O_{6} \)
• Which one of the followings has maximum number of atoms?
• In which case is number of molecules of water maximum?

⚔️ Practice NEET Chemistry free + battle 1v1 →