EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 1 - p- Block Elements>AP EAPCET 2021 (19-Aug Forenoon)>Q 28

EASY

AP EAPCET

IMPORTANT

Earn 100

Match the following compounds with their corresponding physical properties:

Column-I Column-II

(a) $IBr$ (i) Orange solid

(b) ${ClF}_{3}$ (ii) Yellow-green liquid

(c) ${BrF}_{3}$ (iii) Black solid

(d) ${ICl}_{3}$ (iv) Colorless gas

66.67% studentsanswered this correctly

Important Questions on p- Block Elements

MEDIUM

AP EAPCET

IMPORTANT

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

The incorrect statement among the following is /are

MEDIUM

AP EAPCET

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 1 - p- Block Elements>AP EAPCET - 20 Aug 2021 Forenoon>Q 2

Which of the following statement is incorrect?

EASY

AP EAPCET

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 1 - p- Block Elements>AP EAPCET 2021 (19-Aug Afternoon)>Q 3

Assertion

(A) :

The colour of old lead paintings can be restored by washing them with a dilute solution of

H_{2} O_{2}

.
Reason

(R) :

Hydrogen peroxide reduces

PbS

to

Pb

EASY

AP EAPCET

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 1 - p- Block Elements>AP EAPCET 2019 (21-Apr Shift-2)>Q 5

Identify the correct statements

I)

Germanium exists only in traces.

II)

The order of electronegativity of

Si, Ge, Sn

is

Sn > Ge > Si

III)

All group

14

elements are available in solid state

EASY

AP EAPCET

IMPORTANT

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?

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

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

MEDIUM

AP EAPCET

IMPORTANT

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

MEDIUM

AP EAPCET

IMPORTANT

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

EASY

AP EAPCET

IMPORTANT

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

.