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 |
 78%
From NCERT
NEET - 2019
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The compound among the following that used in cosmetic surgery is:

1. Silica

2. Silicates

3. Silicones

4. Zeolites

Subtopic:  Properties of Structure of SiO2 & Other Compounds |
 68%
From NCERT
NEET - 2019
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Consider the following reaction

BF3 Al2Cl4 A dischargedH2 - gas B H2O C

Select the correct statement.

1.  The compound (A) is BCl3

2.  The compound (C) is B2H6

3.  The compound (C) is B2OH4-

4.  The compound (B) is B2Cl4

 

Subtopic:  Compounds of Boron- Preparations, Properties & Uses |
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Tin dissolves in concentrated and dil. H2SO4 as well as HNO3. Which of the following is not the exact product of this process?

1.  SnSO4

2.  SnSO42

3.  SnNO33

4.  H2SnO3  

Subtopic:  Properties of Glass, Pb & Sn compounds |
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Mellitic acid is formed by the oxidation of graphite with -

1. Chromic acid

2. Alkaline KMnO4

3. Fuming HNO3

4. dil. HNO3

Subtopic:  Carbon Family - Preparations, Properties & Uses |
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Incorrect option about 2-D sheet silicates is

1.  Two O-atoms of each tetrahedron are shared

2.  General formula is Si2O5n2n-

3.  Co-ordination number of Si is 4

4.  Number of O-atoms per tetrahedra unit is 52

Subtopic:  Properties of Structure of SiO2 & Other Compounds |
From NCERT
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Colemanite mineral is

1.  Ca2B6O115H2O

2.  CaB4O7.NaBO28H2O

3.  2Mg3B8O15MgCl2

4.  Ca2B6O11.3H2O

Subtopic:  Compounds of Boron- Preparations, Properties & Uses |
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Hydrolysis of SiF4 gives a compound, in which maximum coordination number of Si is

1.  6

2.  4

3.  8

4.  7

Subtopic:  Properties of Structure of SiO2 & Other Compounds |
 60%
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H2C2O4ΔGas(A)+Gas(B)+liquid(C).

Gas (A) burns with blue flame and it oxidised to (B)
Gas(A)+CI2(D) NH3,(E)

A, B, C and E are respectively

1.  CO, CO2, COCl2 and HCONH2

2.  CO, CO2, H2O, COCl2

3.  CO2, CO, H2O, HCONH2

4.  CO, CO2, H2O, NH2CONH2

Subtopic:  Carbon Family - Preparations, Properties & Uses |
 50%
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The most volatile compound among the following is -

1.  CH4

2.  SiH4

3.  GeH4

4.  SnH4

Subtopic:  Carbon Family - Preparations, Properties & Uses |
 64%
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