MCQOPTIONS
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MCQOPTIONS
This section includes 10 Mcqs, each offering curated multiple-choice questions to sharpen your Chemistry knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
What can be tested using a litmus paper? |
| A. | Acidic nature only |
| B. | Basic nature only |
| C. | Both acidic nature and basic nature |
| D. | Nothing |
| Answer» D. Nothing | |
| 2. |
Which of the following is superoxide? |
| A. | K2O |
| B. | Na2O |
| C. | MgO |
| D. | KO2 |
| Answer» E. | |
| 3. |
N2O is a _________ |
| A. | Tear gas |
| B. | Laughing gas |
| C. | Acid |
| D. | Base |
| Answer» D. Base | |
| 4. |
The relationship between Li, Mg and Be, Al is called the __________ relationship. |
| A. | Diagonal |
| B. | Periodic |
| C. | Group |
| D. | Triangle |
| Answer» B. Periodic | |
| 5. |
What is the oxidation state of Mn in KMnO4? |
| A. | 5 |
| B. | 6 |
| C. | 7 |
| D. | 4 |
| Answer» D. 4 | |
| 6. |
Ionization energies are always positive. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 7. |
What is the correct order of electronegativity among the following options? |
| A. | Li<Na<K<Rb<Cs |
| B. | Li<K<Na<Rb<Cs |
| C. | Li>Na>K>Cs>Rb |
| D. | Li>Na>K=Rb>Cs |
| Answer» E. | |
| 8. |
X(g) → X+(g) + e–. What does this chemical reaction need to occur? |
| A. | Catalyst |
| B. | Electron affinity |
| C. | Electropositivity |
| D. | Ionization energy |
| Answer» E. | |
| 9. |
O2-, F–, Na+ and Mg2+ are called as __________ |
| A. | Isoelectronic species |
| B. | Isoneutral species |
| C. | Isotopes |
| D. | Isobars |
| Answer» B. Isoneutral species | |
| 10. |
Atomic radii ____________ along the periods. |
| A. | Increases |
| B. | Decreases |
| C. | Remains constant |
| D. | Irregular |
| Answer» C. Remains constant | |