MCQOPTIONS
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MCQOPTIONS
This section includes 4 Mcqs, each offering curated multiple-choice questions to sharpen your Chemistry knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
The compound which could not act both as oxidising as well as reducing agent is [IIT Screening 1991] |
| A. | \[S{{O}_{2}}\] |
| B. | \[Mn{{O}_{2}}\] |
| C. | \[A{{l}_{2}}{{O}_{3}}\] |
| D. | \[CrO\] |
| Answer» D. \[CrO\] | |
| 2. |
Which one of the following reactions is not an example of redox reaction [Kurukshetra CEE 1998] |
| A. | \[C{{l}_{2}}+2{{H}_{2}}O+S{{O}_{2}}\to 4{{H}^{+}}+S{{O}^{4-}}+2C{{l}^{-}}\] |
| B. | \[C{{u}^{++}}+Zn\to Z{{n}^{++}}+Cu\] |
| C. | \[2{{H}_{2}}+{{O}_{2}}\to 2{{H}_{2}}O\] |
| D. | \[HCl+{{H}_{2}}O\to {{H}_{3}}{{O}^{-}}+C{{l}^{-}}\] |
| Answer» E. | |
| 3. |
The oxidation number of sulphur in \[{{S}_{8}},\,{{S}_{2}}{{F}_{2}},\,{{H}_{2}}S\] respectively, are[IIT 1999] |
| A. | 0, +1 and - 2 |
| B. | + 2, +1 and - 2 |
| C. | 0, + 1 and + 2 |
| D. | - 2, + 1 and - 2 |
| Answer» B. + 2, +1 and - 2 | |
| 4. |
For decolourization of 1 mole of \[KMn{{O}_{4}}\], the moles of \[{{H}_{2}}{{O}_{2}}\] required is [AIIMS 2004] |
| A. | 44228 |
| B. | 44230 |
| C. | 44232 |
| D. | 44234 |
| Answer» D. 44234 | |