307090
Assertion : \(1.34 \times 10^{-3}\) and 1.23 both have three significant figures. Reason : Numbers other than zero are all significant.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
Explanation:
In scientific notation, all digits, including trailing zeros to the right of the decimal point, are considered significant figures. So, the option (1) is correct.
CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY
307091
The correctly reported answer of the addition of \(\mathrm{29.4406,3.2}\) and 2.25 will have significant figures
1 3
2 4
3 2
4 5
Explanation:
\(\mathrm{29.4406+3.2+2.25=34.8906}\). As 3.2 has least number of decimal places, (i.e., one) The sum should also contain one decimal place only. After round off, reported sum is 34.9 , which has three significant figures.
307090
Assertion : \(1.34 \times 10^{-3}\) and 1.23 both have three significant figures. Reason : Numbers other than zero are all significant.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
Explanation:
In scientific notation, all digits, including trailing zeros to the right of the decimal point, are considered significant figures. So, the option (1) is correct.
CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY
307091
The correctly reported answer of the addition of \(\mathrm{29.4406,3.2}\) and 2.25 will have significant figures
1 3
2 4
3 2
4 5
Explanation:
\(\mathrm{29.4406+3.2+2.25=34.8906}\). As 3.2 has least number of decimal places, (i.e., one) The sum should also contain one decimal place only. After round off, reported sum is 34.9 , which has three significant figures.
