Chemistry Questions And Answers.
| 1. | Industrial chemistry deals with the manufacturing of compounds: |
| |
| A. | in the laboratory |
| B. | on micro scale |
| C. | on commercial scale |
| D. | on economic scale |
|
|
Published by:Michael Daani
| 2. | Which one of the following can be separated by physical means? |
| |
| A. | Mixture |
| B. | Element |
| C. | Compound |
| D. | radical |
|
|
Published by:Michael Daani
| 3. | The most abundant element occurring in the oceans is: |
| |
| A. | Oxygen |
| B. | Hydrogen |
| C. | Nitrogen |
| D. | silicon |
|
|
Published by:Michael Daani
| 4. | The third abundant gas found in the atmosphere is: |
| |
| A. | carbon monoxide |
| B. | oxygen |
| C. | nitrogen |
| D. | argon |
|
|
Published by:Michael Daani
| 5. | One amu (atomic mass unit) is equivalent.to: |
| |
| A. | 1.66 10"%*mg = |
| B. | 1.66 �10748 |
| C. | --1.66 x 107! |
| D. | -1.66.* 10-3 |
|
|
Published by:Michael Daani
