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Q. No.
What order does the stability of interhalogen compounds follow?
1. IF3 > BrF3 > CIF3
2. BrF3 > IF3 > ClF3
3. ClF3 > BrF3 > IF3
4. ClF3 > IF3 > BrF3
Subtopic: Group 17 - Preparation, Properties & Uses |
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Subtopic: Group 15 - Preparation, Properties & Uses |
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Argon is used:
1. To obtain low temperature
2. In high-temperature welding
3. In radiotherapy for the treatment of cancer
4. In filling airships
Subtopic: Group 18 - Preparation, Properties & Uses |
70%
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The molecular shapes of SF4, CF4 and XeF4 are:
| 1. | The same with 2, 0 and 1 lone pairs of electrons on the central atoms, respectively |
| 2. | The same with 1, 1 and 1 lone pairs of electrons on the central atoms, respectively |
| 3. | Different with 0, 1 and 2 lone pairs of electrons on the central atoms, respectively |
| 4. | Different with 1, 0 and 2 lone pairs of electrons on the central atoms, respectively |
Subtopic: Group 18 - Preparation, Properties & Uses |
83%
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Which of the following statement is false?
| 1. | Liquid helium is used as a cryogenic liquid. |
| 2. | XeO3 has four σ and four π-bonds. |
| 3. | The hybridisation of Xe in XeF4 is sp3d2. |
| 4. | Among noble gases, the occurrence of argon is highest in air. |
Subtopic: Group 18 - Preparation, Properties & Uses |
80%
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Which of the following liquids has the ability to climb the glass vessel's wall?
1. Alcohol
2. Liquid He
3. Liquid
4. Water
Subtopic: Group 18 - Preparation, Properties & Uses |
77%
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Which of the following statements is false?
| 1. | He is used in gas-cooled nuclear reactors |
| 2. | He is used as a cryogenic agent for carrying out experiments at low temperature |
| 3. | He is used to produce and sustain powerful superconducting magnets. |
| 4. | He is used to fill gas balloons instead of H 2 because it is lighter and non-inflammable. |
Subtopic: Group 18 - Preparation, Properties & Uses |
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Subtopic: Group 18 - Preparation, Properties & Uses |
70%
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The gas that is used in the gas thermometer is:
| 1. | \(\mathrm{He} \) | 2. | \(\mathrm{O}_2 \) |
| 3. | \(\mathrm{Xe} \) | 4. | \(\mathrm{Ne}\) |
Subtopic: Group 18 - Preparation, Properties & Uses |
71%
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Subtopic: Group 18 - Preparation, Properties & Uses |
92%
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