MCQOPTIONS
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MCQOPTIONS
This section includes 10 Mcqs, each offering curated multiple-choice questions to sharpen your Organic Chemistry Questions and Answers knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
What is the volume strength of H2O2 of its 11.2 ml requires 30 ml of 0.5 M 2Cr2O7? |
| A. | 35 |
| B. | 55 |
| C. | 25 |
| D. | 45 |
| Answer» E. | |
| 2. |
How many moles of KMnO4 are required for complete oxidation of 1.25 mol Cu2S? |
| A. | Cu2S → Cu+2 + SO2 |
| B. | 1 mole |
| C. | 3 moles |
| D. | 2 moles |
| E. | 5 moles |
| Answer» D. 2 moles | |
| 3. |
How many moles of KCI are required to produce 10 mol Cl2 by the reaction with KCIO3? |
| A. | 1.66 mole |
| B. | 13.33 mole |
| C. | 0.66 mole |
| D. | 16.66 mole |
| Answer» E. | |
| 4. |
What is the concentration of H2O2 solution of 20 ml of H2O2 solution which will react completely with 10 ml of 2 M KMnO4 in acidic medium? |
| A. | 1.25 M |
| B. | 5 M |
| C. | 2.5 M |
| D. | 25 M |
| Answer» D. 25 M | |
| 5. |
What is the mass of Fe304 if it reacts completely with 25 ml of 0.3m K2Cr2O7? |
| A. | 1 .44 g |
| B. | 10.44 g |
| C. | 104.4 g |
| D. | 14.4 g |
| Answer» C. 104.4 g | |
| 6. |
What is the volume of 0.05 M KMnO4 which will react with 50 ml of 0.1 M H2S in acidic medium (H2S → S02)? |
| A. | 60 ml |
| B. | 6 ml |
| C. | 12 ml |
| D. | 120 ml |
| Answer» E. | |
| 7. |
What is the mass of K2Cr2O7 required to produce 254 gm I2 from KI solution? Given: K2Cr2O7 + 2KI → 2Cr3+ + I2 |
| A. | 49 g |
| B. | 98 g |
| C. | 9.8 g |
| D. | 4.9 g |
| Answer» C. 9.8 g | |
| 8. |
How many number of moles of KMnO4 will react with 180 gm H2C2O4 according to given reaction? |
| A. | KMnO4 + H2C2O4 → 2C02 + Mn2+ |
| B. | 4/5 |
| C. | 2/5 |
| D. | 1/5 |
| E. | 4/3 |
| Answer» B. 4/5 | |
| 9. |
Excess of KI reacts with CuSO4 solution and then Na2S2O3 solution is added to it. Which of the statement is incorrect for this reaction? |
| A. | Na2S2O3 is oxidized |
| B. | CuI2 is formed |
| C. | Cu2I2 is formed |
| D. | Evolved I2 is reduced |
| Answer» C. Cu2I2 is formed | |
| 10. |
KMnO4 reacts with oxalic acid according to the equation given below. Here 20 mL of 0.1 M KMnO4 is equivalent to how many mL and molarity of H2C2O4? |
| A. | 2MnO4– + 5C2O4– + 16H+ → 2Mn+1 + 10CO2 + 8H2O |
| B. | 20 mL of 0.5 M H2C2O4 |
| C. | 50 mL of 0.5 M H2C2O4 |
| D. | 50 mL of 0.1 M H2C2O4 |
| E. | 20 mL of 0.1 M H2C2O4 |
| Answer» D. 50 mL of 0.1 M H2C2O4 | |