PClacts as

1. Reducing agent

2. Oxidising agent

3. Dehydrating Agent

4. None of the above.

Subtopic:  Group 15 - Preparation, Properties & Uses |
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Level 2: 60%+
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The electron gain enthalpy values for O → O and O → O2– are –141 and 702 kJ  mol-1 , respectively. The correct statement about the formation of oxides is-

1. Higher the electron gain enthalpy lower is the lattice energy.
2. Higher the electron gain enthalpy higher is the lattice energy.
3. Higher the electron gain enthalpy higher is the stability of oxide.
4. O- is more stable than O2-

Subtopic:  Group 16 - Preparation, Properties & Uses |
Level 3: 35%-60%
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\(\mathrm{Xe}+\mathrm{PtF}_6 \rightarrow \text { ? }\)

The product of the above reaction is:

1. \(\mathrm{O}_2{ }^{+}\left[\mathrm{PtF}_6\right]^{-}. \) 2. \(\mathrm{XeF}_4 \)
3. \(\mathrm{XeF}_6 \) 4. \(\mathrm{Xe}^{+}\left[\mathrm{PtF}_6\right]^{-}\)
Subtopic:  Group 18 - Preparation, Properties & Uses |
 85%
Level 1: 80%+
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In which compound does phosphorous have the lowest oxidation state?

1. H3PO3 

2. PCl3 

3. Ca3P2 

4. POF3

Subtopic:  Group 15 - Preparation, Properties & Uses |
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Level 2: 60%+
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 A xenon fluoride that does not exist is:

1. XeF4
2. XeF2
3. XeF3
4. XeF6

Subtopic:  Group 18 - Preparation, Properties & Uses |
 88%
Level 1: 80%+
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(a) XeF+ 3H2O →

(b) XeF+ H2

The products formed in the above reactions, respectively, are:

1. XeO3 , XeOF4
2. XeO6 , XeOF4
3. XeO3, XeOF6
4. XeO, XeOF6

Subtopic:  Group 18 - Preparation, Properties & Uses |
 81%
Level 1: 80%+
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XeF4 is isostructural with :

1. ICl4-       

2. IBr2-                   

3. BrO3-

4. ICl3-

Subtopic:  Group 18 - Preparation, Properties & Uses |
 81%
Level 1: 80%+
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Which of the following is incorrect regarding noble gases?

1. The atomic radii corresponds to van der Waal’s radii.

2. They have the largest size in a period.

3. They are also called inert gases.

4. They combine to form molecules.

Subtopic:  Group 18 - Preparation, Properties & Uses |
 73%
Level 2: 60%+
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In solid-state, PCl5 exists as: 

1. Covalent solid.
2. Octahedral structure.
3. Ionic solid with [PCl6]+ octahedral and [PCl4]- tetrahedral.
4. Ionic solid with [PCl4]+ tetrahedral and  [PCl6]- octahedral.

Subtopic:  Group 15 - Preparation, Properties & Uses |
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Level 2: 60%+
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Match the items in Columns I and II and mark the correct option.

Column I Column II
A. H2SO4 1. Highest electron affinity
B. CCl3NO2 2. Chalcogen
C. Cl2 3. Tear gas
D. Sulphur 4. Storage batteries

Codes:

A B C D
1. 4 3 1 2
2. 3 4 1 2
3. 4 1 2 3
4. 2 1 3 4
Subtopic:  Group 16 - Preparation, Properties & Uses |
 87%
Level 1: 80%+
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