MCQOPTIONS
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MCQOPTIONS
This section includes 9 Mcqs, each offering curated multiple-choice questions to sharpen your Chemistry knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
1 mole of ammonia is of 17 g. Then what is the mass of 0.3 moles of ammonia? |
| A. | 21g |
| B. | 2.1g |
| C. | 17g |
| D. | 1g |
| Answer» C. 17g | |
| 2. |
One mole of sucrose contains how many grams of sucrose? |
| A. | 342g |
| B. | 343g |
| C. | 341g |
| D. | 340g |
| Answer» B. 343g | |
| 3. |
What’s the number of particles in 10 moles of hydrochloric acid? |
| A. | 6.022 x 1022 particles |
| B. | 6.022 x 1023 particles |
| C. | 6.22 x 1023 particles |
| D. | 3.22 x 1022 particles |
| Answer» B. 6.022 x 1023 particles | |
| 4. |
If one mole of ammonia contains “y” number of particles, then how many particles do 1 mole of glucose contain? |
| A. | 2y |
| B. | 0.5y |
| C. | 3y |
| D. | y |
| Answer» E. | |
| 5. |
12.044 x 1023 atoms of oxygen contains _______ |
| A. | 1 mole of oxygen |
| B. | 2 moles of oxygen |
| C. | 3 moles of oxygen |
| D. | 4 moles of oxygen |
| Answer» C. 3 moles of oxygen | |
| 6. |
A mole of any substance contains _______ |
| A. | 6.022 x 1026 particles |
| B. | 6.022 x 1022 particles |
| C. | 6.022 x 1023 particles |
| D. | 3.022 x 1022 particles |
| Answer» D. 3.022 x 1022 particles | |
| 7. |
1 u = Ma/NA. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 8. |
What’s the number of entities or particles together in mole concept known as? |
| A. | Boltzmann constant |
| B. | Avogadro’s number |
| C. | Universal gas constant |
| D. | Reynold’s number |
| Answer» C. Universal gas constant | |
| 9. |
According to S.I. the system, ______ was used to measure the amount of substance. |
| A. | mole |
| B. | weight machine |
| C. | weight |
| D. | mass |
| Answer» B. weight machine | |