QBManager

11. THE P-BLOCK ELEMENTS

189988 Choose the correct order of $C - C$ bond length in the given compounds

1

A c e t y l e n e < e t h y l e n e < g r a p h i t e < b e n z e n e < e t h a n e

2

A c e t y l e n e < e t h y l e n e < b e n z e n e < g r a p h i t e < e t h a n e

3

A c e t y l e n e < g r a p h i t e < e t h y l e n e < b e n z e n e < e t h a n e

4

A c e t y l e n e < b e n z e n e < g r a p h i t e < e t h y l e n e < e t h a n e

11. THE P-BLOCK ELEMENTS

189989 In which of the following silicates, only two comers per tetrahedron are shared ? $(i)$ Pyro silicate $(i i)$ Cyclic silicate $(i i i)$ Double chain silicate $(i v)$ Single chain silicate $(v)$ $3 D$ silicate $(v i)$ Sheet silicate

1

(i)

,

(i i)

and

(v)

2

(i v)

and

(v i)

only

3

(i)

and

(v i)

only

4

(i i)

and

(i v)

only

Explanation:

$(i)$ Pyro silicates : ( $1$ corner $O -$ atom per tetrahedron is shared)
$(i i)$ Cyclic silicates : ( $2$ corner $O -$ atom per tetrahedron is shared)
$(i i i)$ Double chain silicates (One unit shares two comer $O -$ atom while one unit shares three corner $O -$ atom)
$(i v)$ Single chain silicate : ( $2$ corner $O -$ atom are shared)
$(v)$ $3 D$ silicate : ( $4$ corner $O -$ atom are shared)
$(v i)$ Sheet silicates : ( $3$ corner $O -$ atom are shared)

11. THE P-BLOCK ELEMENTS

189990 The correct code for stability of oxidation states for given cations is $(i)$ $P b^{2 +} > P b^{4 +}, T l^{+} < T l^{3 +}$ $(i i)$ $B i^{3 +} < S b^{3 +}, S n^{2 +} < s n^{4 +}$ $(i i i)$ $P b^{2 +} > P b^{4 +}, B i^{3 +} > B i^{5 +}$ $(i v)$ $T l^{3 +} S n^{4 +}$ $(v)$ $S n^{2 +} P b^{4 +}$ $(v i)$ $S n^{2 +} < P b^{2 +}, S n^{4 +} < P b^{4 +}$

1

(v)

and

(v i)

2

(i), (i i i)

and

(v i)

3

(i i i)

and

(v)

4

(i i)

and

(i v)

Explanation:

Due to inen effect the stability of lower oxidation state gradually increases while stability Of higher oxidation state gradually decreases down the group in elements of group $13^{t h}$ to $15^{t h}$ . So correct orders are :
$(i i i)$ $P b^{2 +} > P b^{4 +}, B i^{3 +} > B i^{s +}$
$(i v)$ $S n^{2 +} P b^{4 +}$

11. THE P-BLOCK ELEMENTS

189991 Which acid is not an arrhenius acid

1

H N O_{3}

2

H C l O_{4}

3

H_{3} B O_{3}

4

H_{3} P O_{4}

Explanation:

$H_{3} B O_{3} \Rightarrow B (O H)_{3}$

11. THE P-BLOCK ELEMENTS

189992 $H_{3} B O_{3} \overset{T_{1}}{\to} X \overset{T_{2}}{\to} Y \overset{Re d h o t}{\to} B_{2} O_{3}$ if $T_{1} < T_{2}$ then $X$ and $Y$ respectively are

1

X =

Metaboric Acid,

Y =

Tetraboric acid

2

X =

Tetraboric Acid,

Y =

Metaboric acid

3

X =

Borax,

Y =

Metaboric acid

4

X =

Tetraboric Acid,

Y =

Borax

Explanation:

$H_{3} B O_{3} \overset{100^{\circ} C}{⟶} H B O_{2} \overset{160^{\circ} C}{⟶} H_{2} B_{4} O_{7} \overset{red hot}{⟶} B_{2} O_{3}$
$X$ is $H B O_{2}$ which is metaboric acid and $Y$ is $H_{2} B_{4} O_{7}$ which is tetraboric acid.

11. THE P-BLOCK ELEMENTS

189988 Choose the correct order of $C - C$ bond length in the given compounds

1

A c e t y l e n e < e t h y l e n e < g r a p h i t e < b e n z e n e < e t h a n e

2

A c e t y l e n e < e t h y l e n e < b e n z e n e < g r a p h i t e < e t h a n e

3

A c e t y l e n e < g r a p h i t e < e t h y l e n e < b e n z e n e < e t h a n e

4

A c e t y l e n e < b e n z e n e < g r a p h i t e < e t h y l e n e < e t h a n e

11. THE P-BLOCK ELEMENTS

189989 In which of the following silicates, only two comers per tetrahedron are shared ? $(i)$ Pyro silicate $(i i)$ Cyclic silicate $(i i i)$ Double chain silicate $(i v)$ Single chain silicate $(v)$ $3 D$ silicate $(v i)$ Sheet silicate

1

(i)

,

(i i)

and

(v)

2

(i v)

and

(v i)

only

3

(i)

and

(v i)

only

4

(i i)

and

(i v)

only

Explanation:

$(i)$ Pyro silicates : ( $1$ corner $O -$ atom per tetrahedron is shared)
$(i i)$ Cyclic silicates : ( $2$ corner $O -$ atom per tetrahedron is shared)
$(i i i)$ Double chain silicates (One unit shares two comer $O -$ atom while one unit shares three corner $O -$ atom)
$(i v)$ Single chain silicate : ( $2$ corner $O -$ atom are shared)
$(v)$ $3 D$ silicate : ( $4$ corner $O -$ atom are shared)
$(v i)$ Sheet silicates : ( $3$ corner $O -$ atom are shared)

11. THE P-BLOCK ELEMENTS

189990 The correct code for stability of oxidation states for given cations is $(i)$ $P b^{2 +} > P b^{4 +}, T l^{+} < T l^{3 +}$ $(i i)$ $B i^{3 +} < S b^{3 +}, S n^{2 +} < s n^{4 +}$ $(i i i)$ $P b^{2 +} > P b^{4 +}, B i^{3 +} > B i^{5 +}$ $(i v)$ $T l^{3 +} S n^{4 +}$ $(v)$ $S n^{2 +} P b^{4 +}$ $(v i)$ $S n^{2 +} < P b^{2 +}, S n^{4 +} < P b^{4 +}$

1

(v)

and

(v i)

2

(i), (i i i)

and

(v i)

3

(i i i)

and

(v)

4

(i i)

and

(i v)

Explanation:

Due to inen effect the stability of lower oxidation state gradually increases while stability Of higher oxidation state gradually decreases down the group in elements of group $13^{t h}$ to $15^{t h}$ . So correct orders are :
$(i i i)$ $P b^{2 +} > P b^{4 +}, B i^{3 +} > B i^{s +}$
$(i v)$ $S n^{2 +} P b^{4 +}$

11. THE P-BLOCK ELEMENTS

189991 Which acid is not an arrhenius acid

1

H N O_{3}

2

H C l O_{4}

3

H_{3} B O_{3}

4

H_{3} P O_{4}

Explanation:

$H_{3} B O_{3} \Rightarrow B (O H)_{3}$

11. THE P-BLOCK ELEMENTS

189992 $H_{3} B O_{3} \overset{T_{1}}{\to} X \overset{T_{2}}{\to} Y \overset{Re d h o t}{\to} B_{2} O_{3}$ if $T_{1} < T_{2}$ then $X$ and $Y$ respectively are

1

X =

Metaboric Acid,

Y =

Tetraboric acid

2

X =

Tetraboric Acid,

Y =

Metaboric acid

3

X =

Borax,

Y =

Metaboric acid

4

X =

Tetraboric Acid,

Y =

Borax

Explanation:

$H_{3} B O_{3} \overset{100^{\circ} C}{⟶} H B O_{2} \overset{160^{\circ} C}{⟶} H_{2} B_{4} O_{7} \overset{red hot}{⟶} B_{2} O_{3}$
$X$ is $H B O_{2}$ which is metaboric acid and $Y$ is $H_{2} B_{4} O_{7}$ which is tetraboric acid.

11. THE P-BLOCK ELEMENTS

189988 Choose the correct order of $C - C$ bond length in the given compounds

1

A c e t y l e n e < e t h y l e n e < g r a p h i t e < b e n z e n e < e t h a n e

2

A c e t y l e n e < e t h y l e n e < b e n z e n e < g r a p h i t e < e t h a n e

3

A c e t y l e n e < g r a p h i t e < e t h y l e n e < b e n z e n e < e t h a n e

4

A c e t y l e n e < b e n z e n e < g r a p h i t e < e t h y l e n e < e t h a n e

11. THE P-BLOCK ELEMENTS

189989 In which of the following silicates, only two comers per tetrahedron are shared ? $(i)$ Pyro silicate $(i i)$ Cyclic silicate $(i i i)$ Double chain silicate $(i v)$ Single chain silicate $(v)$ $3 D$ silicate $(v i)$ Sheet silicate

1

(i)

,

(i i)

and

(v)

2

(i v)

and

(v i)

only

3

(i)

and

(v i)

only

4

(i i)

and

(i v)

only

Explanation:

$(i)$ Pyro silicates : ( $1$ corner $O -$ atom per tetrahedron is shared)
$(i i)$ Cyclic silicates : ( $2$ corner $O -$ atom per tetrahedron is shared)
$(i i i)$ Double chain silicates (One unit shares two comer $O -$ atom while one unit shares three corner $O -$ atom)
$(i v)$ Single chain silicate : ( $2$ corner $O -$ atom are shared)
$(v)$ $3 D$ silicate : ( $4$ corner $O -$ atom are shared)
$(v i)$ Sheet silicates : ( $3$ corner $O -$ atom are shared)

11. THE P-BLOCK ELEMENTS

189990 The correct code for stability of oxidation states for given cations is $(i)$ $P b^{2 +} > P b^{4 +}, T l^{+} < T l^{3 +}$ $(i i)$ $B i^{3 +} < S b^{3 +}, S n^{2 +} < s n^{4 +}$ $(i i i)$ $P b^{2 +} > P b^{4 +}, B i^{3 +} > B i^{5 +}$ $(i v)$ $T l^{3 +} S n^{4 +}$ $(v)$ $S n^{2 +} P b^{4 +}$ $(v i)$ $S n^{2 +} < P b^{2 +}, S n^{4 +} < P b^{4 +}$

1

(v)

and

(v i)

2

(i), (i i i)

and

(v i)

3

(i i i)

and

(v)

4

(i i)

and

(i v)

Explanation:

Due to inen effect the stability of lower oxidation state gradually increases while stability Of higher oxidation state gradually decreases down the group in elements of group $13^{t h}$ to $15^{t h}$ . So correct orders are :
$(i i i)$ $P b^{2 +} > P b^{4 +}, B i^{3 +} > B i^{s +}$
$(i v)$ $S n^{2 +} P b^{4 +}$

11. THE P-BLOCK ELEMENTS

189991 Which acid is not an arrhenius acid

1

H N O_{3}

2

H C l O_{4}

3

H_{3} B O_{3}

4

H_{3} P O_{4}

Explanation:

$H_{3} B O_{3} \Rightarrow B (O H)_{3}$

11. THE P-BLOCK ELEMENTS

189992 $H_{3} B O_{3} \overset{T_{1}}{\to} X \overset{T_{2}}{\to} Y \overset{Re d h o t}{\to} B_{2} O_{3}$ if $T_{1} < T_{2}$ then $X$ and $Y$ respectively are

1

X =

Metaboric Acid,

Y =

Tetraboric acid

2

X =

Tetraboric Acid,

Y =

Metaboric acid

3

X =

Borax,

Y =

Metaboric acid

4

X =

Tetraboric Acid,

Y =

Borax

Explanation:

$H_{3} B O_{3} \overset{100^{\circ} C}{⟶} H B O_{2} \overset{160^{\circ} C}{⟶} H_{2} B_{4} O_{7} \overset{red hot}{⟶} B_{2} O_{3}$
$X$ is $H B O_{2}$ which is metaboric acid and $Y$ is $H_{2} B_{4} O_{7}$ which is tetraboric acid.

11. THE P-BLOCK ELEMENTS

189988 Choose the correct order of $C - C$ bond length in the given compounds

1

A c e t y l e n e < e t h y l e n e < g r a p h i t e < b e n z e n e < e t h a n e

2

A c e t y l e n e < e t h y l e n e < b e n z e n e < g r a p h i t e < e t h a n e

3

A c e t y l e n e < g r a p h i t e < e t h y l e n e < b e n z e n e < e t h a n e

4

A c e t y l e n e < b e n z e n e < g r a p h i t e < e t h y l e n e < e t h a n e

11. THE P-BLOCK ELEMENTS

189989 In which of the following silicates, only two comers per tetrahedron are shared ? $(i)$ Pyro silicate $(i i)$ Cyclic silicate $(i i i)$ Double chain silicate $(i v)$ Single chain silicate $(v)$ $3 D$ silicate $(v i)$ Sheet silicate

1

(i)

,

(i i)

and

(v)

2

(i v)

and

(v i)

only

3

(i)

and

(v i)

only

4

(i i)

and

(i v)

only

Explanation:

$(i)$ Pyro silicates : ( $1$ corner $O -$ atom per tetrahedron is shared)
$(i i)$ Cyclic silicates : ( $2$ corner $O -$ atom per tetrahedron is shared)
$(i i i)$ Double chain silicates (One unit shares two comer $O -$ atom while one unit shares three corner $O -$ atom)
$(i v)$ Single chain silicate : ( $2$ corner $O -$ atom are shared)
$(v)$ $3 D$ silicate : ( $4$ corner $O -$ atom are shared)
$(v i)$ Sheet silicates : ( $3$ corner $O -$ atom are shared)

11. THE P-BLOCK ELEMENTS

189990 The correct code for stability of oxidation states for given cations is $(i)$ $P b^{2 +} > P b^{4 +}, T l^{+} < T l^{3 +}$ $(i i)$ $B i^{3 +} < S b^{3 +}, S n^{2 +} < s n^{4 +}$ $(i i i)$ $P b^{2 +} > P b^{4 +}, B i^{3 +} > B i^{5 +}$ $(i v)$ $T l^{3 +} S n^{4 +}$ $(v)$ $S n^{2 +} P b^{4 +}$ $(v i)$ $S n^{2 +} < P b^{2 +}, S n^{4 +} < P b^{4 +}$

1

(v)

and

(v i)

2

(i), (i i i)

and

(v i)

3

(i i i)

and

(v)

4

(i i)

and

(i v)

Explanation:

Due to inen effect the stability of lower oxidation state gradually increases while stability Of higher oxidation state gradually decreases down the group in elements of group $13^{t h}$ to $15^{t h}$ . So correct orders are :
$(i i i)$ $P b^{2 +} > P b^{4 +}, B i^{3 +} > B i^{s +}$
$(i v)$ $S n^{2 +} P b^{4 +}$

11. THE P-BLOCK ELEMENTS

189991 Which acid is not an arrhenius acid

1

H N O_{3}

2

H C l O_{4}

3

H_{3} B O_{3}

4

H_{3} P O_{4}

Explanation:

$H_{3} B O_{3} \Rightarrow B (O H)_{3}$

11. THE P-BLOCK ELEMENTS

189992 $H_{3} B O_{3} \overset{T_{1}}{\to} X \overset{T_{2}}{\to} Y \overset{Re d h o t}{\to} B_{2} O_{3}$ if $T_{1} < T_{2}$ then $X$ and $Y$ respectively are

1

X =

Metaboric Acid,

Y =

Tetraboric acid

2

X =

Tetraboric Acid,

Y =

Metaboric acid

3

X =

Borax,

Y =

Metaboric acid

4

X =

Tetraboric Acid,

Y =

Borax

Explanation:

$H_{3} B O_{3} \overset{100^{\circ} C}{⟶} H B O_{2} \overset{160^{\circ} C}{⟶} H_{2} B_{4} O_{7} \overset{red hot}{⟶} B_{2} O_{3}$
$X$ is $H B O_{2}$ which is metaboric acid and $Y$ is $H_{2} B_{4} O_{7}$ which is tetraboric acid.

11. THE P-BLOCK ELEMENTS

189988 Choose the correct order of $C - C$ bond length in the given compounds

1

A c e t y l e n e < e t h y l e n e < g r a p h i t e < b e n z e n e < e t h a n e

2

A c e t y l e n e < e t h y l e n e < b e n z e n e < g r a p h i t e < e t h a n e

3

A c e t y l e n e < g r a p h i t e < e t h y l e n e < b e n z e n e < e t h a n e

4

A c e t y l e n e < b e n z e n e < g r a p h i t e < e t h y l e n e < e t h a n e

11. THE P-BLOCK ELEMENTS

189989 In which of the following silicates, only two comers per tetrahedron are shared ? $(i)$ Pyro silicate $(i i)$ Cyclic silicate $(i i i)$ Double chain silicate $(i v)$ Single chain silicate $(v)$ $3 D$ silicate $(v i)$ Sheet silicate

1

(i)

,

(i i)

and

(v)

2

(i v)

and

(v i)

only

3

(i)

and

(v i)

only

4

(i i)

and

(i v)

only

Explanation:

$(i)$ Pyro silicates : ( $1$ corner $O -$ atom per tetrahedron is shared)
$(i i)$ Cyclic silicates : ( $2$ corner $O -$ atom per tetrahedron is shared)
$(i i i)$ Double chain silicates (One unit shares two comer $O -$ atom while one unit shares three corner $O -$ atom)
$(i v)$ Single chain silicate : ( $2$ corner $O -$ atom are shared)
$(v)$ $3 D$ silicate : ( $4$ corner $O -$ atom are shared)
$(v i)$ Sheet silicates : ( $3$ corner $O -$ atom are shared)

11. THE P-BLOCK ELEMENTS

189990 The correct code for stability of oxidation states for given cations is $(i)$ $P b^{2 +} > P b^{4 +}, T l^{+} < T l^{3 +}$ $(i i)$ $B i^{3 +} < S b^{3 +}, S n^{2 +} < s n^{4 +}$ $(i i i)$ $P b^{2 +} > P b^{4 +}, B i^{3 +} > B i^{5 +}$ $(i v)$ $T l^{3 +} S n^{4 +}$ $(v)$ $S n^{2 +} P b^{4 +}$ $(v i)$ $S n^{2 +} < P b^{2 +}, S n^{4 +} < P b^{4 +}$

1

(v)

and

(v i)

2

(i), (i i i)

and

(v i)

3

(i i i)

and

(v)

4

(i i)

and

(i v)

Explanation:

Due to inen effect the stability of lower oxidation state gradually increases while stability Of higher oxidation state gradually decreases down the group in elements of group $13^{t h}$ to $15^{t h}$ . So correct orders are :
$(i i i)$ $P b^{2 +} > P b^{4 +}, B i^{3 +} > B i^{s +}$
$(i v)$ $S n^{2 +} P b^{4 +}$

11. THE P-BLOCK ELEMENTS

189991 Which acid is not an arrhenius acid

1

H N O_{3}

2

H C l O_{4}

3

H_{3} B O_{3}

4

H_{3} P O_{4}

Explanation:

$H_{3} B O_{3} \Rightarrow B (O H)_{3}$

11. THE P-BLOCK ELEMENTS

189992 $H_{3} B O_{3} \overset{T_{1}}{\to} X \overset{T_{2}}{\to} Y \overset{Re d h o t}{\to} B_{2} O_{3}$ if $T_{1} < T_{2}$ then $X$ and $Y$ respectively are

1

X =

Metaboric Acid,

Y =

Tetraboric acid

2

X =

Tetraboric Acid,

Y =

Metaboric acid

3

X =

Borax,

Y =

Metaboric acid

4

X =

Tetraboric Acid,

Y =

Borax

Explanation:

$H_{3} B O_{3} \overset{100^{\circ} C}{⟶} H B O_{2} \overset{160^{\circ} C}{⟶} H_{2} B_{4} O_{7} \overset{red hot}{⟶} B_{2} O_{3}$
$X$ is $H B O_{2}$ which is metaboric acid and $Y$ is $H_{2} B_{4} O_{7}$ which is tetraboric acid.

Explanation:

Explanation:

Explanation:

Explanation:

Explanation:

Explanation:

Explanation:

Explanation:

Explanation:

Explanation:

Question Bank Series

Explanation:

Explanation:

Explanation:

Explanation:

Explanation:

Explanation:

Explanation:

Explanation:

Explanation:

Explanation:

Explanation:

Explanation:

Explanation:

Explanation:

Explanation: