MCQOPTIONS
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MCQOPTIONS
This section includes 9 Mcqs, each offering curated multiple-choice questions to sharpen your Chemistry knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Which of the following is not an oxidising agent? |
| A. | magnesium oxide |
| B. | carbon dioxide |
| C. | ozone |
| D. | sodium hydride |
| Answer» E. | |
| 2. |
The oxidation number of oxidant increases in a Redox reaction. |
| A. | true |
| B. | false |
| Answer» C. | |
| 3. |
What is a reducing agent of the reaction Cu+2 + Zn Cu + Zn+2? |
| A. | copper |
| B. | zinc |
| C. | hydrogen |
| D. | oxygen |
| Answer» C. hydrogen | |
| 4. |
Which of the following is true as per metal activity series? |
| A. | Zn<Ag<Cu |
| B. | Zn<Cu<Ag |
| C. | Zn>Ag>Cu |
| D. | Zn>Cu>Ag |
| Answer» E. | |
| 5. |
Intensity of blue colour increases gradually when _________________ |
| A. | copper rod is dipped in silver nitrate solution |
| B. | silver rod is dipped in copper nitrate solution |
| C. | zinc rod is dipped in silver solution |
| D. | copper rod is dipped in zinc rod solution |
| Answer» B. silver rod is dipped in copper nitrate solution | |
| 6. |
Loss of electrons is _________________ |
| A. | oxidising agent |
| B. | oxidation |
| C. | reducing agent |
| D. | reduction |
| Answer» C. reducing agent | |
| 7. |
In this reaction Cu+2 + Zn Cu + Zn+2, what is an oxidising agent? |
| A. | copper |
| B. | zinc |
| C. | hydrogen |
| D. | oxygen |
| Answer» B. zinc | |
| 8. |
When a zinc rod is kept in a copper nitrate solution what happens? |
| A. | zinc is deposited on copper |
| B. | copper is deposited on zinc |
| C. | zinc is deposited in the beaker |
| D. | copper is deposited in the beaker |
| Answer» C. zinc is deposited in the beaker | |
| 9. |
What is the oxidation half reaction of Cu+2 + Zn Cu + Zn+2? |
| A. | Zn Zn<sup>+2</sup> |
| B. | Cu<sup>+2</sup> Cu |
| C. | Cu<sup>+2</sup> Zn<sup>+2</sup> |
| D. | Zn Cu |
| Answer» B. Cu<sup>+2</sup> Cu | |