Chemical Process Calculation Questions and Answers – Signifiant Figures

This set of Chemical Process Calculation Multiple Choice Questions & Answers (MCQs) focuses on “Signifiant Figures”.

1. The given numbers are shown with their significant figures respectively. Find out the wrong one option?
a) 26.24 and 4
b) 24000. and 5
c) 0.000460 and 3
d) 28000.0 and 5
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2. The theoretical production rate of a chemical is 1µg/(mL)(min.). What is the actual production rate of the chemical in lb mol/ (day)(ft3) with an efficiency of 98%?
a) 0.0880
b) 0.0800
c) 0.0449
d) 0.529
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3. Standard form of 2145.67 is
a) 2.14*10³
b) 2.14567*10³
c) 0.214*10⁴
d) None of the mentioned
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4. Correctly rounded, the quotient 5.000 g / 50.0 mL is
a) 0.10 g/mL
b) 0.1 g/mL
c) 0.100 g/mL
d) 0.1000 g/mL
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5. Correctly rounded, the product 3.000 cm × 30.0 cm is
a) 9.0 x 10¹ cm²
b) 9.000 x 10¹ cm²
c) 9 x 10¹ cm²
d) 9.00 x 10¹ cm²
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6. Number of digits that are reasonably sure, called significant figures.
Above given definition is
a) Correct
b) Incorrect
c) Probably correct
d) None of the mentioned
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7. 0.009046879855, round off the number to three significant figures
a) 0.0905
b) 0.0904
c) 0.09046
d) 0.09035
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8. How many significant numbers are there in 420?
a) 1
b) 2
c) 3
d) 0
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9. Using the proper number of significant figures 6 X 6 equals to
a) 3
b) 4
c) 36
d) 40
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10. How many significant figures are there in 0.002000?
a) 1
b) 2
c) 3
d) 4
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Sanfoundry Global Education & Learning Series – Chemical Process Calculation.
To practice all areas of Chemical Process Calculation, here is complete set of 1000+ Multiple Choice Questions and Answers.