Tag: some important compounds of boron

Questions Related to some important compounds of boron

Identify the statement that is not correct as far as the structure of diborane is concerned:

chemistry the p-block elements - group 13 study of diborane some important compounds of boron study of boron

there are two bridging hydrogen atoms in

diborane
each boron atom forms four bonds in diborane
the hydrogen atoms are not in the same plane

in diborane
all B-H bonds in diborane are similar

In diborane, the Tau-bonds can be formed by the overlapping of orbitals :

chemistry the p-block elements - group 13 study of diborane some important compounds of boron study of boron

$sp^{3}-s-sp^{3}$
$sp^{3}-sp^{3}$
$sp^{2}-sp^{3}$
$sp^{2}-s-sp^{2}$

$B _{2}H _{6}$ undergoes substitution reaction with:

chemistry the p-block elements - group 13 study of diborane some important compounds of boron study of boron

$Br _{2}$ at $100^{o}C$
$HCl$ $/$anhydrous $AlCl _{3}$
both A and B
$Cl _{2}$ at $100^{o}C$

With which of the following diborane does not produce hydrogen?

chemistry the p-block elements - group 13 study of diborane some important compounds of boron study of boron

NaOH
$Cl _{2}$
$H _{2}O$
HCl

The non planar molecule among the following is:

chemistry the p-block elements - group 13 study of diborane some important compounds of boron study of boron

$B _{2}H _{6}$
$C _{2}H _{4}$
$C _{6}H _{6}$
$BCl _{3}$

In the case of small cuts, bleeding is stopped by applying potash alum, hence alum acts as:

chemistry the p-block elements - group 13 study of diborane some important compounds of boron study of boron

germicide
disinfectant
fungicide
coagulating Agent

All the $Al-Cl$ bonds in $Al _2Cl _6$ are equivalent.

chemistry the p-block elements - group 13 study of diborane some important compounds of boron study of boron

True
False

Which one of the following does not exist in the free form ?

chemistry the p-block elements - group 13 study of diborane some important compounds of boron study of boron

$BF _{3}$
$BCl _{3}$
$BBr _{3}$
$BH _{3}$

From $B _2H _6$, all the following can be prepared except :

chemistry the p-block elements - group 13 study of diborane some important compounds of boron study of boron

$B _2O _3$
$H _3BO _3$
$B _2(CH _3) _6$
$NaBH _4$

The hydrides of boron are called :

chemistry the p-block elements - group 13 study of diborane some important compounds of boron study of boron

Boron hydrogen compounds
Hydrogen borides
Boranes
Hydroboric acids

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