EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 1 - p- Block Elements>AP EAPCET 2020 (Sep-23 Shift-1)>Q 7

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Which of the following represents the structure of inorganic benzene?

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Important Questions on p- Block Elements

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EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 1 - p- Block Elements>AP EAPCET 2019 (21-Apr Shift-2)>Q 8

Which of the following reactions can be used to prepare diborane?

$I)^{} {BF}_{3} + LiAl H_{4} \overset{ether}{\to}$

$II)$ ${BF}_{3} + NaH \overset{450 K}{⟶}$
$III) {Na}_{2} B_{4} O_{7} + H_{2} O ⟶$
$IV) {NaBH}_{4} + I_{2} ⟶$

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EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 1 - p- Block Elements>AP EAPCET 2018 (25-APR Shift-1)>Q 9

In the structure of

B_{2} H_{6}

, the number of

{BH}_{2}

groups present in one plane, and the number of

B - H

bonds,

B - B

bonds,

B - H - B

bridge bonds are respectively

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EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 1 - p- Block Elements>AP EAPCET 2021 (19-Aug Forenoon)>Q 10

When borax is dissolved in water, it gives an alkaline solution. The alkaline solution consists the following products

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EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 1 - p- Block Elements>AP EAPCET 2021 (19-Aug Afternoon)>Q 11

The structure of diborane $B_{2} H_{6}$ is given below. Identify the bond angles $x, y .$ In diborane, which bonds are commonly known as banana-bonds

Question Image

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EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 1 - p- Block Elements>AP EAPCET 2018 (25-APR Shift-1)>Q 12

Identify the incorrect statements from the following

I .

Tin in

+ 2

state acts as reducing agent while lead in

+ 4

state acts as strong oxidising agent.

II .

Silicon exists as both

{[{SiF}_{6}]}^{2 -}

and

{[{SiCl}_{6}]}^{2 -}

forms.

III .

The hybridisation of carbon in fullerene is

{sp}^{3}

.

IV .

Among

Ge, Sn

and

Pb

lowest melting point is for

Sn

.

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EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 1 - p- Block Elements>AP EAPCET 2021 (19-Aug Forenoon)>Q 13

Identify

(P)

and

(Q)

in the following reaction:

2 {CH}_{3} Cl + Si \to_{570 K}^{Cu powder} (P) \overset{H_{2} O}{⟶} (Q) ⟶ Straight chain polymer

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EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 1 - p- Block Elements>AP EAPCET 2020 (Sep-23 Shift-1)>Q 14

Which of the following metals is used as a catalyst in Haber's process of ammonia synthesis?

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EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 1 - p- Block Elements>AP EAPCET 2019 (21-Apr Shift-2)>Q 15

Sodium nitrite is reacted with

H_{2} {SO}_{4}

to form

{NaHSO}_{4}, {HNO}_{3},

water and

X

. Gold is dissolved in aqua regia to form water,

{AuCl}_{4}^{-}

and

Y . X

and

Y

are respectively