MCQOPTIONS
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MCQOPTIONS
This section includes 14 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 elements is more reactive with air? |
| A. | indium |
| B. | gallium |
| C. | thallium |
| D. | all three are equally reactive |
| Answer» D. all three are equally reactive | |
| 2. |
Which of the following elements do you think can react with water? |
| A. | Thallium |
| B. | Boron |
| C. | Aluminium |
| D. | Gallium |
| Answer» B. Boron | |
| 3. |
____________ Boron is reactive with air. |
| A. | Neither crystalline nor amorphous |
| B. | Crystalline |
| C. | Both crystalline and amorphous |
| D. | Amorphous |
| Answer» E. | |
| 4. |
Boron and silicon form covalent and volatile halides. |
| A. | true |
| B. | false |
| Answer» B. false | |
| 5. |
Which of the following property is not a similarity between Boron and silicon? |
| A. | metals |
| B. | non-metals metals |
| C. | semiconductors |
| D. | formation of covalent hydrides |
| Answer» B. non-metals metals | |
| 6. |
Do Boron and silicon react with electropositive metals? |
| A. | Yes |
| B. | No |
| C. | Maybe |
| D. | May not be |
| Answer» B. No | |
| 7. |
Boron shows a diagonal relationship with ____________ |
| A. | thallium |
| B. | lithium |
| C. | magnesium |
| D. | aluminium |
| Answer» B. lithium | |
| 8. |
Which of the following is the correct reason for the anomalous behaviour of Boron? |
| A. | low ionization energy |
| B. | smallest size in the group |
| C. | low electronegativity |
| D. | the presence of the orbital and can show allotropy |
| Answer» C. low electronegativity | |
| 9. |
____________ and Boron are same in case when reacted with concentrated nitric acid. |
| A. | Oxygen |
| B. | Aluminium |
| C. | Hydrogen |
| D. | No other metal |
| Answer» E. | |
| 10. |
Which of the following compound is formed when aluminium reacts with an alkali? |
| A. | sodium Tetra hydroxyl aluminate V |
| B. | sodium Tetra hydroxyl aluminate III |
| C. | sodium Penta hydroxyl aluminate IV |
| D. | sodium Septa hydroxyl aluminate III |
| Answer» C. sodium Penta hydroxyl aluminate IV | |
| 11. |
Which of the following is true regarding the acidic character? |
| A. | Aluminium halides acidic character is greater than that of indium halide |
| B. | Boron halide acidic character is less than that of gallium halide |
| C. | Gallium halides acidic character is less than that of indium halide |
| D. | Aluminium halides acidic character is greater than that of boron halide |
| Answer» B. Boron halide acidic character is less than that of gallium halide | |
| 12. |
Which of the following is a colourless gas? |
| A. | Boron chloride |
| B. | Boron fluoride |
| C. | Boron Bromide |
| D. | Boron iodide |
| Answer» C. Boron Bromide | |
| 13. |
All the oxides and hydroxides of Boron family are ____________ in nature. |
| A. | acidic |
| B. | basic |
| C. | acidic and basic |
| D. | acidic, basic and amphoteric |
| Answer» E. | |
| 14. |
Group 13 hydrides are formed directly. |
| A. | true |
| B. | false |
| Answer» C. | |