RE-NEET 2026 Chemistry Significant Figures MCQ Question
The numbers 17.0145 and 21.0235 were rounded to three figures after the decimal point. The resulting numbers, respectively, are
17.015 and 21.023
17.014 and 21.024
17.015 and 21.024
17.014 and 21.023
Correct Answer
Detailed Explanation
To round the numbers 17.0145 and 21.0235 to three figures after the decimal point, we look at the fourth digit. For 17.0145, the fourth digit is 5, which means we round up the third digit (4) to 5, resulting in 17.015. For 21.0235, the fourth digit is also 5, rounding the third digit (3) up to 4, giving us 21.024. Thus, the correct rounded numbers are 17.015 and 21.024, corresponding to option B.
The other options fail because they either do not round correctly or misinterpret the rounding rules.
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