MCQOPTIONS
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MCQOPTIONS
This section includes 20 Mcqs, each offering curated multiple-choice questions to sharpen your Chemical Process Calculation knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
How many significant figures are there in 0.002000? |
| A. | 1 |
| B. | 2 |
| C. | 3 |
| D. | 4 |
| Answer» E. | |
| 2. |
Using the proper number of significant figures 6 X 6 equals to |
| A. | 3 |
| B. | 4 |
| C. | 36 |
| D. | 40 |
| Answer» E. | |
| 3. |
0.009046879855, round off the number to three significant figures |
| A. | 0.0905 |
| B. | 0.0904 |
| C. | 0.09046 |
| D. | 0.09035 |
| Answer» B. 0.0904 | |
| 4. |
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 |
| Answer» B. Incorrect | |
| 5. |
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. | 0.088 |
| B. | 0.0800 |
| C. | 0.0449 |
| D. | 0.529 |
| Answer» B. 0.0800 | |
| 6. |
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 |
| Answer» E. | |
| 7. |
How many significant digits are there in 002.5001? |
| A. | 1 |
| B. | 5 |
| C. | 7 |
| D. | 6 |
| Answer» C. 7 | |
| 8. |
The volume of a box, 10 m wide, 4.5m, long and 2.3 m high up to 3 significant digits in m3 is ____ |
| A. | 104 |
| B. | 103.5 |
| C. | 103 |
| D. | 100 |
| Answer» B. 103.5 | |
| 9. |
The number of significant digits in 5.002 is ____ |
| A. | 5 |
| B. | 4 |
| C. | 3 |
| D. | 6 |
| Answer» C. 3 | |
| 10. |
How many significant digits are there in 25.33600? |
| A. | 7 |
| B. | 8 |
| C. | 5 |
| D. | 6 |
| Answer» B. 8 | |
| 11. |
The length of a cube is 2.3 cm. What is its volume rounded off to 4 significant digits in cm3? |
| A. | 12.67 |
| B. | 12.167 |
| C. | 12.17 |
| D. | 13 |
| Answer» D. 13 | |
| 12. |
What is the number 75.66852 rounded off to 5 significant digits? |
| A. | 75.67 |
| B. | 75.669 |
| C. | 75.668 |
| D. | 75.667 |
| Answer» C. 75.668 | |
| 13. |
Number of significant digits in 0.0028900 is ______ |
| A. | 5 |
| B. | 6 |
| C. | 7 |
| D. | 8 |
| Answer» B. 6 | |
| 14. |
The number 0.005900, in standard scientific form can be expressed as ______ |
| A. | 5.9×103 |
| B. | 59×104 |
| C. | 5.9×102 |
| D. | 5.9×104 |
| Answer» B. 59×104 | |
| 15. |
The number of significant digits in 1559.00 is ____ |
| A. | 6 |
| B. | 5 |
| C. | 3 |
| D. | 4 |
| Answer» B. 5 | |
| 16. |
The length and breadth of a rectangle are 4.5 mm and 5.9 mm. Keeping the number of significant figures in mind, its area in mm2 is ____ |
| A. | 22.55 |
| B. | 26.55 |
| C. | 26.6 |
| D. | 22 |
| Answer» C. 26.6 | |
| 17. |
How many significant numbers are there in 420? |
| A. | 1 |
| B. | 2 |
| C. | 3 |
| D. | 0 |
| Answer» C. 3 | |
| 18. |
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 |
| Answer» D. 0.1000 g/mL | |
| 19. |
Standard form of 2145.67 is |
| A. | 2.14*10<sup>3</sup> |
| B. | 2.14567*10<sup>3</sup> |
| C. | 0.214*10<sup>4</sup> |
| D. | None of the mentioned |
| Answer» C. 0.214*10<sup>4</sup> | |
| 20. |
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 |
| Answer» B. 0.0800 | |