PbO2 on reaction with HNO3 gives gas:

1. NO2

2. O2

3.  N2

4.  N2O

Subtopic:  Properties of Glass, Pb & Sn compounds |
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AlF3 is soluble in HF only in the presence of KF due to the formation of:

1. K3[AlF3H3] 2. K3[AlF6]
3. AlH3 4. K[AlF3H]
Subtopic:  Boron Family- Preparations, Properties & Uses |
 79%
From NCERT
NEET - 2016
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The correct statement among the following is :

1. Sn2+ is an oxidizing agent while Pb4+ is a reducing agent.
2. Sn2+ and Pb2+ both are oxidizing agents.
3. Sn4+ is a reducing agent while Pb4+ is an oxidizing agent.
4. Sn2+ is a reducing agent while Pb4+ is an oxidizing agent.

Subtopic:  Carbon Family - Preparations, Properties & Uses |
 67%
From NCERT
NEET - 2017
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An element that cannot form MF63- ion is-

1. Ga 2. Al
3. B 4. In
Subtopic:  Compounds of Boron- Preparations, Properties & Uses |
 81%
From NCERT
NEET - 2018
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The correct order of atomic radii of the group 13 elements is-

1. B < Al < In < Ga < Tl
2. B < Al < Ga < In < Tl
3. B < Ga < Al < Tl < In
4. B < Ga < Al < In < Tl

Subtopic:  Boron Family- Preparations, Properties & Uses |
 67%
From NCERT
NEET - 2018
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In which of the following pairs, both the species are not isostructural?

1. \(\mathrm{SiCl}_4, \mathrm{PCl}_4^{+}\)
2. Diamond, silicon carbide
3. \(\mathrm{NH}_3, \mathrm{PH}_3\)
4. \(\mathrm{XeF}_4, \mathrm{XeO}_4\)
 

Subtopic:  Carbon Family - Preparations, Properties & Uses |
 63%
From NCERT
NEET - 2015
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The stability of +1 oxidation state among Al, Ga, In and Tl increases in the sequence?
1. Ga < ln < Al < Tl
2. Al < Ga < ln < Tl
3. Tl < ln < Ga < Al
4. ln < Tl < Ga < Al

Subtopic:  Boron Family- Preparations, Properties & Uses |
 89%
From NCERT
NEET - 2015
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A compound among the following having a similar structure to graphite is:

1. B
2. B4C
3. B2H6
4. BN

Subtopic:  Carbon Family - Preparations, Properties & Uses |
 64%
From NCERT
AIPMT - 2013
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Which of these is not a monomer for a high molecular mass silicone polymer?

1. Me2SiCl2 2. Me3SiCl
3. PhSiCl3 4. MeSiCl3
Subtopic:  Properties of Structure of SiO2 & Other Compounds |
 56%
From NCERT
AIPMT - 2013
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The basic structural unit of silicates is:

1. SiO44–

2. SiO32–

3. SiO42–

4. SiO

Subtopic:  Properties of Structure of SiO2 & Other Compounds |
 74%
From NCERT
AIPMT - 2013
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