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Q. No.It is difficult to study the chemistry of Radon because :
1.
It is a radioactive substance.
2.
It is a very stable substance.
3.
Half-life of Radon is longer.
4.
It forms variety of compounds.
Subtopic: Group 18 - Preparation, Properties & Uses |
90%
Level 1: 80%+
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When PH3 reacts with an acid like HBr, then the product formed is-
1. PH4Br
2. PBr3
4. PBr5
4. PH5
1. PH4Br
2. PBr3
4. PBr5
4. PH5
Subtopic: Group 15 - Preparation, Properties & Uses |
70%
Level 2: 60%+
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Consider the following reaction,
XeF6 + 2H2O → X + 4HF
The product X is:
1. XeO2F2
2. XeO3
3. XeOF4
4. None of the above
XeF6 + 2H2O → X + 4HF
The product X is:
1. XeO2F2
2. XeO3
3. XeOF4
4. None of the above
Subtopic: Group 18 - Preparation, Properties & Uses |
75%
Level 2: 60%+
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Subtopic: Group 18 - Preparation, Properties & Uses |
89%
Level 1: 80%+
Hints
Given below are two statements:
| Assertion (A): | ICl is more reactive than I2 . |
| Reason (R): | I−Cl bond in ICl is weaker than I−I bond in I2 |
| 1. | Both (A) and (R) are true and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are true but (R) is not the correct explanation of (A). |
| 3. | (A) is true but (R) is false. |
| 4. | (A) is false but (R) is true. |
Subtopic: Group 18 - Preparation, Properties & Uses |
86%
Level 1: 80%+
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The poisonous gases which contain(s) chlorine atom(s) is/are-
1. Phosgene
2. Mustard gas
3. Both 1 and 2
4. None of the above
1. Phosgene
2. Mustard gas
3. Both 1 and 2
4. None of the above
Subtopic: Group 17 - Preparation, Properties & Uses |
80%
Level 1: 80%+
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The bleaching action of Cl2 is due to formation of :
1. Nascent chlorine.
2. Nascent oxygen.
3. Oxygen gas.
4. Hypochlorous acid.
1. Nascent chlorine.
2. Nascent oxygen.
3. Oxygen gas.
4. Hypochlorous acid.
Subtopic: Group 17 - Preparation, Properties & Uses | Group 16 - Preparation, Properties & Uses |
72%
Level 2: 60%+
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Sea is the greatest source of :
1. Halogens.
2. Noble gases.
3. Alkaline earth metals.
4. Chalcogens.
Subtopic: Group 17 - Preparation, Properties & Uses |
76%
Level 2: 60%+
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The anomalous behaviour of fluorine among the following is/are :
1. Formation of only one oxoacid.
2. High electronegativity.
3. Low electronegativity.
4. Both (1) and (2)
1. Formation of only one oxoacid.
2. High electronegativity.
3. Low electronegativity.
4. Both (1) and (2)
Subtopic: Group 17 - Preparation, Properties & Uses |
87%
Level 1: 80%+
Hints
Correct statement among the following regarding flourine is:
| 1. | Fluorine is stronger oxidising agent than chlorine. |
| 2. | Fluorine is weaker oxidising agent than chlorine. |
| 3. | Fluorine is stronger reducing agent than chlorine. |
| 4. | Bond dissociation energy of fluorine is more than chlorine. |
Subtopic: Group 17 - Preparation, Properties & Uses |
88%
Level 1: 80%+
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