MCQOPTIONS
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MCQOPTIONS
This section includes 6 Mcqs, each offering curated multiple-choice questions to sharpen your Engineering Chemistry knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Which of the following is the second step for calculating the amount of lime and soda? |
| A. | Identification of lime and soda for different salts |
| B. | Calculation of CaCO<sub>3</sub> equivalents |
| C. | Calculation of lime requirements |
| D. | Calculation of soda requirements |
| Answer» C. Calculation of lime requirements | |
| 2. |
In lime-soda process, no exchange of ions occurs. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 3. |
In lime soda process, capital cost is ___________ whereas operational expenses are __________ |
| A. | High, low |
| B. | High, high |
| C. | Low, low |
| D. | Low, high |
| Answer» E. | |
| 4. |
The residual hardness in lime-soda process is ___________ |
| A. | 0-2 ppm |
| B. | 5-15 ppm |
| C. | 15-50 ppm |
| D. | 50-70 ppm |
| Answer» D. 50-70 ppm | |
| 5. |
For the softening of one mole of magnesium bicarbonate, the number of mole of lime required is? |
| A. | 2 |
| B. | 3 |
| C. | 4 |
| D. | 5 |
| Answer» B. 3 | |
| 6. |
What is the molecular formula of lime? |
| A. | CaCO<sub>3</sub> |
| B. | Al(OH)<sub>3</sub> |
| C. | Ca(OH)<sub>2</sub> |
| D. | Mg(OH)<sub>2</sub> |
| Answer» D. Mg(OH)<sub>2</sub> | |