Identify the correct statements from the following:

a. CO2(g) is used as a refrigerant ice-cream and frozen food.

b. The structure of C60 customs12 six carbon rings and 25 five carbon rings

c. ZSM-5, a type of zeolite, is used to convent alcohol into gasoline.

d. CO is a colorless and odorless gas

1. (a) and (c) only

2. (b) and (c) only

3. (c) and (d) only

4. (a), (c) and (c) only

Subtopic:  Carbon Family - Preparations, Properties & Uses | Compounds of Carbon, Preparations, Properties & Uses |
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Which of the following oxide is amphoteric in nature?

1. SnO2

2. SiO2

3. GeO2

4. CO2

Subtopic:  Carbon Family - Preparations, Properties & Uses |
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The incorrect statement among the following is -

1.  SnF4 is ionic in nature

2.  PbF4 is covalent in nature

3.  SiCl4 is easily hydrolysed

4.  GeX4 (X=F, Cl, Br, I) is more stable than GeX2

Subtopic:  Carbon Family - Preparations, Properties & Uses |
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Which of the following species is not stable?

1.  SiCl62-

2.  SiF62-

3.  GeCl62-

4.  SnOH62-

Subtopic:  Carbon Family - Preparations, Properties & Uses |
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Aluminium chloride in acidified aqueous solution forms a complex 'A'. The formula of A and hybridisation state of Al in 'A' is respectively-

1. [Al(H2O)6]3+, sp3d2

2. [Al(H2O)4]3+, sp3

3. [Al(H2O)4]3+, dsp2

4. [Al(H2O)]3+, d2sp3

Subtopic:  Boron Family- Preparations, Properties & Uses |
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Which of the following compounds is used in cosmetic surgery?

1. Silica

2. Silicates

3. Silicones

4. Zeolites

Subtopic:  Properties of Structure of SiO2 & Other Compounds |
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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 |
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The correct order of atomic radii among 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 |
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The correct statement regarding inert pair effect 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 |
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AlF3 is soluble in HF only in the presence of KF due to the formation of-

1.  K3AIF3H3
2.  K3AIF6
3.  AIH3
4.  KAIF3H

Subtopic:  Boron Family- Preparations, Properties & Uses |
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