MCQOPTIONS
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MCQOPTIONS
This section includes 10 Mcqs, each offering curated multiple-choice questions to sharpen your Chemical Industry knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Which solvent is used as make-up for the extraction of H3PO4 from CaCl2 solution? |
| A. | Acetone |
| B. | Benzene |
| C. | Water |
| D. | Amyl alcohol |
| Answer» E. | |
| 2. |
Which electrostatic precipitator element is used to resist free HF steel action? |
| A. | Arsenic |
| B. | Mercury |
| C. | Graphite |
| D. | Selenium |
| Answer» D. Selenium | |
| 3. |
(H_3 PO_4 , , ^{ underrightarrow{1}} H_4 P_2 O_7 , , ^{ underrightarrow{1}} HPO_3 ) Indicate the temperatures 1and 2? |
| A. | 1.300 C 2.1000 C |
| B. | 1.250 C 2.900 C |
| C. | 1.250 C 2.500 C |
| D. | 1.100 C 2.1000 C |
| Answer» C. 1.250 C 2.500 C | |
| 4. |
Which of the following is used as reducing agent in electric furnace process (direct conversion at plant site)? |
| A. | Coke |
| B. | Graphite |
| C. | Nascent hydrogen |
| D. | Sodium amalgam |
| Answer» B. Graphite | |
| 5. |
Which is the economical process for manufacture of phosphoric acid in India? |
| A. | Wet process by H<sub>2</sub>SO<sub>4</sub> leaching |
| B. | Wet process by HCl leaching |
| C. | Electric furnace processes |
| D. | Blast furnace process |
| Answer» C. Electric furnace processes | |
| 6. |
Which material is used in the construction of storage tanks in wet process by H2SO4 leaching? |
| A. | PVC coated steel |
| B. | Steel lined with acid proof brick |
| C. | Stainless steel |
| D. | Rubber lined steel |
| Answer» E. | |
| 7. |
What temperature must be maintained in the reactor used in wet process by H2SO4 leaching? |
| A. | 100 C |
| B. | 80 C |
| C. | 150 C |
| D. | 120 C |
| Answer» C. 150 C | |
| 8. |
Which evaporator is used to concentrate the dilute acid produced in wet process method by H2SO4 leaching? |
| A. | Single effect evaporator |
| B. | Film evaporator |
| C. | Triple effect evaporator |
| D. | Circulation evaporator |
| Answer» B. Film evaporator | |
| 9. |
Which of the following is not a reaction of wet process method of production of phosphoric acid? |
| A. | Ca<sub>3</sub> (PO<sub>4</sub>)<sub>2</sub> + 3H<sub>2</sub>SO<sub>4</sub> + 6H<sub>2</sub>O 2H<sub>3</sub>PO<sub>4</sub> + 3(CaSO<sub>4</sub> 2H<sub>2</sub>O) |
| B. | 6HF + SiO<sub>2</sub> H<sub>2</sub> SiF<sub>6</sub> + 2H<sub>2</sub>O |
| C. | Ca<sub>3</sub> (PO<sub>4</sub>)<sub>2</sub> + 6HCl + 6H<sub>2</sub>O 2H<sub>3</sub>PO<sub>4</sub> + 3CaCl<sub>2</sub> |
| D. | P<sub>2</sub> O<sub>5</sub> + 3H<sub>2</sub>O 2H<sub>3</sub>PO<sub>4</sub> |
| Answer» E. | |
| 10. |
Ortho phosphoric acid is completely miscible with water. |
| A. | False |
| B. | True |
| Answer» C. | |