MCQOPTIONS
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MCQOPTIONS
This section includes 17 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. |
Alkalinity is a measure of the ability of water to neutralize the acids. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 2. |
The alkalinity due to carbonate ion is 2P when? |
| A. | P = M |
| B. | P > M/2 |
| C. | P = M/2 |
| D. | P < M/2 |
| Answer» D. P < M/2 | |
| 3. |
The alkalinity due to bicarbonate ion when P < M/2 will be ____________ |
| A. | M-2P |
| B. | 2(M-P) |
| C. | Nil |
| D. | 2P-M |
| Answer» B. 2(M-P) | |
| 4. |
The alkalinity due to hydroxide ion when P > M/2 will be ____________ |
| A. | M-2P |
| B. | 2(M-P) |
| C. | Nil |
| D. | 2P-M |
| Answer» E. | |
| 5. |
What is the disadvantage of using high alkaline water? |
| A. | It may lead to infections |
| B. | It may lead to electrolysis |
| C. | It may lead to caustic embrittlement |
| D. | It may lead to indigestion |
| Answer» D. It may lead to indigestion | |
| 6. |
The temporary hardness in water is due to ____________ |
| A. | OH– |
| B. | CO32- |
| C. | H+ |
| D. | HCO3– |
| Answer» E. | |
| 7. |
Water from reservoirs comes under the category of ____________ |
| A. | Surface water |
| B. | Rain water |
| C. | Underground water |
| D. | Sea water |
| Answer» B. Rain water | |
| 8. |
THE_ALKALINITY_DUE_TO_CARBONATE_ION_IS_2P_WHEN?$ |
| A. | P = M |
| B. | P > M/2 |
| C. | P = M/2 |
| D. | P < M/2 |
| Answer» D. P < M/2 | |
| 9. |
Alkalinity_is_a_measure_of_the_ability_of_water_to_neutralize_the_acids.$ |
| A. | True |
| B. | False |
| Answer» B. False | |
| 10. |
The alkalinity due to bicarbonate ion when P < M/2 will b? |
| A. | M-2P |
| B. | 2(M-P) |
| C. | Nil |
| D. | 2P-M |
| Answer» B. 2(M-P) | |
| 11. |
The alkalinity due to hydroxide ion when P > M/2 will be |
| A. | M-2P |
| B. | 2(M-P) |
| C. | Nil |
| D. | 2P-M |
| Answer» E. | |
| 12. |
What are the disadvantage of using high alkaline water? |
| A. | It may lead to infections |
| B. | It may lead to electrolysis |
| C. | It may lead to caustic embrittlement |
| D. | It may lead to indigestion |
| Answer» D. It may lead to indigestion | |
| 13. |
With respect to the constituents causing alkalinity in water, which of the following situation never arises? |
| A. | CO<sub>3</sub><sup>2-</sup> and HCO<sub>3</sub><sup>–</sup> together |
| B. | HCO<sub>3</sub><sup>–</sup> and OH<sup>–</sup> together |
| C. | OH<sup>–</sup> only |
| D. | OH<sup>–</sup> and CO<sub>3</sub><sup>2-</sup> together |
| Answer» C. OH<sup>‚Äö√Ñ√∂‚àö√ë‚àö¬®</sup> only | |
| 14. |
The temporary hardness in water is due to |
| A. | OH<sup>–</sup> |
| B. | CO<sub>3</sub><sup>2-</sup> |
| C. | H<sup>+</sup> |
| D. | HCO<sub>3</sub><sup>–</sup> |
| Answer» E. | |
| 15. |
Which of the following indicator is pink in basic medium? |
| A. | Methyl orange |
| B. | Phenolphthalein |
| C. | Starch |
| D. | Litmus paper |
| Answer» C. Starch | |
| 16. |
Water from reservoirs comes under the category of |
| A. | Surface water |
| B. | Rain water |
| C. | Underground water |
| D. | Sea water |
| Answer» B. Rain water | |
| 17. |
Which source of water is free from hardness and surface impurities? |
| A. | Surface water |
| B. | Underground water |
| C. | Rain water |
| D. | Sea water |
| Answer» D. Sea water | |