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 |
 55%
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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 |
 53%
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Which among CH4SiH4GeH4 and SnH4 is most volatile?

1.  CH4

2.  SiH4

3.  GeH4

4.  SnH4

Subtopic:  Carbon Family - Preparations, Properties & Uses |
 61%
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Borazine is called inorganic benzene. It has a ring structure with alternate BH and NH groups. Which of the following statements is not correct about borazine?

1.  Each B and N atom is sp2 hybridized

2.  Borazine satisfies the (4n + 2)π electrons Huckel's rule

3.  Like organic benzene, borazine does not give addition product with HCI

4.  Borazine contains dative pπ - pπ bond

Subtopic:  Compounds of Boron- Preparations, Properties & Uses |
 64%
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The incorrect statement for orthoboric acid is

1.  It can not be titrated satisfactorily with NaOH, as a sharp endpoint is not obtain

2.  The acidity of its aqueous solution increases upon the addition of ethylene glycol

3.  It is a weak electrolyte in water

4.  It has a three-dimensional structure due to hydrogen bonding

Subtopic:  Compounds of Boron- Preparations, Properties & Uses |
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The coordination number of Al in aluminates is:

1.  3

2.  6

3.  1

4.  4

Subtopic:  Boron Family- Preparations, Properties & Uses |
 67%
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Which of the following oxide is mixed oxide?

1.  PbO2

2.  SnO2

3.  Pb2O3

4.  Pb3O4

Subtopic:  Carbon Family - Preparations, Properties & Uses |
 60%
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Select the correct statement(s) regarding the following reaction sequence

1.  The compound (A) is CH32SiCl2

2.  The compound D is SiC

3.  The compound (B) is CH32SiOH2

4.  All of these 

Subtopic:  Properties of Structure of SiO2 & Other Compounds |
 89%
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The number of double bonds at alternate position in C60 molecule are

1.  20

2.  25

3.  30

4.  36

Subtopic:   Structure & Properties of Allotropes of C |
 50%
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Incorrect statement among the following is

1.  BnHn+6 are known as arachnoboranes

2.  Indium hydride is a polymeric solid

3.  AlH3 is a monomeric planar molecule

4.  Nido-boranes have the general formula BnHn+4

Subtopic:  Anomalous Behaviour of B & C |
 59%
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