Match the items in Column I with its main use listed in Column II : Column I Column II A Silica gel i . Transistor B Silicon ii . Ion-exchanger C Silicone iii . Drying agent D Silicate iv . Sealant

A - iii , B - i , C - iv , D - ii

A - iv , B - i , C - ii , D - iii

A - ii , B - i , C - iv , D - iii

A - ii , B - iv , C - i , D - iii

The correct order of bond enthalpy ( kJ mol – 1 ) is:

C - C > Si - Si > Ge - Ge > Sn - Sn

Si - Si > C - C > Sn - Sn > Ge - Ge

Si - Si > C - C > Ge - Ge > Sn - Sn

C - C > Si - Si > Sn - Sn > Ge - Ge

Given below are two statements: Statement I: Chlorine can easily combine with oxygen to from oxides: and the product has a tendency to explode. Statement II: Chemical reactivity of an element can be determined by its reaction with oxygen and halogens. In the light of the above statements, choose the correct answer from the options given below

Both the statements I and II are true

Statement I is true but Statement II is false

Statement I is false but Statement II is true

Both the Statements I and II are false

Given below are two statements: One is labelled as Assertion A and the other is labelled as Reason R. Assertion A: Amongst He , Ne , Ar and Kr ; 1 g of activated charcoal adsorbs more of Kr . Reason R: The critical volume V c ( cm 3 mol – 1 ) and critical pressure P c (atm) is highest for Krypton but the compressibility factor at critical point Z c is lowest for Krypton. In the light of the above statements, choose the correct answer from the options given below.

Both A and R are true but R is NOT the correct explanation of A

Both A and R are true and R is the correct explanation A

Given below are two statements : Statement I : Upon heating a borax bead dipped in cupric sulphate in a luminous flame, the colour of the bead becomes green. Statement II : The green colour observed is due to the formation of copper(I) metaborate In the light of the above statements, choose the most appropriate answer from the options given below:

Both Statement I and Statement II are false

Both Statement I and Statement II are true

Statement I is false but Statement II is true

Statement I is true but Statement II is false

Boric acid in solid, whereas BF 3 is gas at room temperature because of

Strong hydrogen bond in Boric acid

Strong ionic bond in Boric acid

Strong van der Waal's interaction in Boric acid

E M B I B E

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 18 - The p-Block Elements>JEE Main - 9th April 2019 Shift 2>Q 13

EASY

JEE Main

IMPORTANT

Earn 100

The correct statements among I to III regrading group 13 element oxides are,
(I) Boron trioxide is acidic.
(II) Oxides of aluminum and gallium are amphoteric.
(III) Oxides of indium and thallium are basic.

42.86% studentsanswered this correctly

Important Questions on The p-Block Elements

EASY

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 18 - The p-Block Elements>JEE Main - 9th April 2019 Shift 1>Q 14

C_{60},

an allotrope of carbon contains

MEDIUM

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 18 - The p-Block Elements>JEE Main - 9th April 2017>Q 15

Which one of the following is an oxide?

HARD

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 18 - The p-Block Elements>JEE Main - 9th April 2017>Q 16

The number of

P - OH

bonds and the oxidation state of phosphorus atom in pyrophosphoric acid

(H_{4} P_{2} O_{7})

, respectively are:

MEDIUM

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 18 - The p-Block Elements>JEE Main - 9th April 2017>Q 17

The correct sequence of decreasing number of

π

-bonds in the structure of

H_{2} S O_{3}, H_{2} S O_{4}

and

H_{2} S_{2} O_{7}

is:

EASY

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 18 - The p-Block Elements>JEE Main - 9th April 2017>Q 18

{XeF}_{6}

on partial hydrolysis with water, produces a compound

X .

The same compound

X

is formed when

{XeF}_{6}

reacts with silica. The compound

X

is:

EASY

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 18 - The p-Block Elements>JEE Main - 9th April 2016>Q 19

The non-metal that does not exhibit positive oxidation state is:

MEDIUM

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 18 - The p-Block Elements>JEE Main - 9th April 2016>Q 20

Match the items in Column

I

with its main use listed in Column

II

:

	Column $I$		Column $II$
$A$	Silica gel	$i .$	Transistor
$B$	Silicon	$ii .$	Ion-exchanger
$C$	Silicone	$iii .$	Drying agent
$D$	Silicate	$iv .$	Sealant

MEDIUM

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 18 - The p-Block Elements>JEE Main - 9th April 2014>Q 21

The gas evolved on heating

{CaF}_{2}

and

{SiO}_{2}

with concentrated

H_{2} {SO}_{4}

, on hydrolysis gives a white gelatinous precipitate. The precipitate is:

Learn and Prepare for any exam you want !

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The correct statements among I to III regrading group 13 element oxides are, (I) Boron trioxide is acidic. (II) Oxides of aluminum and gallium are amphoteric. (III) Oxides of indium and thallium are basic.

Important Questions on The p-Block Elements

Learn and Prepare for any exam you want !

The correct statements among I to III regrading group 13 element oxides are,
(I) Boron trioxide is acidic.
(II) Oxides of aluminum and gallium are amphoteric.
(III) Oxides of indium and thallium are basic.