Consider the following ionization enthalpies of two elements 'A' and 'B'. Element Ionization enthalphy kJ / mol 1 st 2 nd 3 rd A 899 1757 14847 B 737 1450 7731 Which of the following statements is correct?

Both 'A' and 'B' belong to group-2 where 'B' comes below 'A'.

Both 'A' and 'B' belong to group-1 where 'A' comes below 'B'.

Both 'A' and 'B' belong to group-2 where 'A' comes below 'B'.

Both 'A' and 'B' belong to group-1 where 'B' comes below 'A'.

Match the following compounds (Column-I) with their uses (Column-II) S. No. Column-I S.No. Column-II (I) Ca OH 2 (A) casts of statues (II) NaCl (B) white wash (III) CaSO 4 · 1 2 H 2 O (C) antacid (IV) CaCO 3 (D) washing soda preparation

(I)-(B), (II)-(D), (III)-(A), (IV)-(C)

(I)-(D), (II)-(A), (III)-(C), (IV)-(B)

(I)-(B), (II)-(C), (III)-(D), (IV)-(A)

(I)-(D), (II)-(C), (III)-(B), (IV)-(A)

Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A): Gypsum is used for making fireproof wall boards. Reason (R): Gypsum is unstable at high temperatures. In the light of the above statements, choose the correct answer from the options given below:

Both (A) and (R) are correct but (R) is not the correct explanation of (A).

(A) is correct but (R) is not correct.

(A) is not correct but (R) is correct.

Both (A) and (R) are correct and (R) is the correct explanation of (A).

Match List I with List II (A) Slaked lime (I) NaOH (B) Dead burnt plaster (II) Ca ( OH ) 2 (C) Caustic soda (III) Na 2 CO 3 · 10 H 2 O (D) Washing soda (IV) CaSO 4 Choose the correct answer form the options given below:

(A) - II, (B) - IV, (C) - I, (D) - III

(A) - I, (B) - IV, (C) - II, (D) - III

(A) - III, (B) - IV, (C) - II, (D) - I

(A) - III, (B) - II, (C) -IV, (D) -I

Which of the following reaction is correct?

4 LiNO 3 ⟶ Δ 2 Li 2 O + 4 NO 2 + O 2

4 LiNO 3 ⟶ Δ 2 Li 2 O + 2 N 2 O 4 + O 2

2 LiNO 3 ⟶ Δ 2 Li + 2 NO 2 + O 2

EASY

JEE Main

IMPORTANT

Earn 100

The covalent alkaline earth metal halide $(X = C l, B r, I)$ is:

43.06% studentsanswered this correctly

Important Questions on The s-Block Elements

MEDIUM

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 15 - The s-Block Elements>JEE Main - 8th April 2019 Shift 1>Q 14

The correct order of hydration enthalpies of alkali metal ions is:

HARD

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 15 - The s-Block Elements>JEE Main - 8th April 2017>Q 15

A metal

M

reacts with nitrogen gas to afford

M_{3} N

M_{3} N

on heating at high temperature gives back

M

and on reaction with water produces a gas

B

. Gas

B

reacts with an aqueous solution of

{CuSO}_{4}

to form a deep blue compound.

M and B

respectively are

MEDIUM

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 15 - The s-Block Elements>JEE Main - 8th April 2017>Q 16

Consider the following ionization enthalpies of two elements 'A' and 'B'.

Element	Ionization enthalphy $(kJ / mol)$
	$1^{st}$	$2^{nd}$	$3^{rd}$
A	899	1757	14847
B	737	1450	7731

Which of the following statements is correct?

EASY

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 15 - The s-Block Elements>JEE Main - 6 September 2020 Shift 2>Q 17

Match the following compounds (Column-I) with their uses (Column-II)

S. No.	Column-I	S.No.	Column-II
(I)	$Ca {(OH)}_{2}$	(A)	casts of statues
(II)	$NaCl$	(B)	white wash
(III)	${CaSO}_{4} \cdot \frac{1}{2} H_{2} O$	(C)	antacid
(IV)	${CaCO}_{3}$	(D)	washing soda preparation

EASY

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 15 - The s-Block Elements>JEE Main - 6 September 2020 Shift 1>Q 18

Among the sulphates of alkaline earth metals, the solubilities of

{BeSO}_{4}

and

{MgSO}_{4}

in water, respectively, are :

EASY

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 15 - The s-Block Elements>JEE Main - 4th April 2015>Q 19

Which one of the following alkaline earth metal sulphates has its hydration enthalpy greater than its lattice enthalpy?

MEDIUM

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 15 - The s-Block Elements>JEE Main - 4 September 2020 Shift 2>Q 20

An alkaline earth metal '

M

' readily forms water soluble sulphate and water insoluble hydroxide. Its oxide

MO

is very stable to heat and does not have rock-salt structure.

M

EASY

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 15 - The s-Block Elements>JEE Main - 4 September 2020 Shift 1>Q 21

On combustion of

Li, Na

and

K

in excess of air, the major oxides formed, respectively, are:

The covalent alkaline earth metal halide X=Cl,Br,I is:

Important Questions on The s-Block Elements

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The covalent alkaline earth metal halide $(X = C l, B r, I)$ is: