EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 15 - The s-Block Elements>JEE Main - 25 January 2023 Shift 2>Q 82

EASY

JEE Main

IMPORTANT

Earn 100

Given below are two statements, one is labelled as Assertion A and the other is labelled as Reason R

Assertion A:- The alkali metals and their salts impart characteristic colour to reducing flame.

Reason R:- Alkali metals can be detected using flame tests.

In the light of the above statements, choose the most appropriate answer form the options given below

50% studentsanswered this correctly

Important Questions on The s-Block Elements

EASY

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 15 - The s-Block Elements>JEE Main - 25 January 2023 Shift 2>Q 83

Which one among the following metals is the weakest reducing agent?

EASY

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 15 - The s-Block Elements>JEE Main - 29 January 2023 Shift 1>Q 84

The correct order of hydration enthalpies is

(A) $K^{+}$
(B) ${Rb}^{+}$
(C) ${Mg}^{2 +}$
(D) ${Cs}^{+}$
(E) ${Ca}^{2 +}$

Choose the correct answer from the options given below:

EASY

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 15 - The s-Block Elements>JEE Main - 29 January 2023 Shift 2>Q 85

On heating,

{LiNO}_{3}

gives how many compounds among the following?

{Li}_{2} O, N_{2}, O_{2}, {LiNO}_{2}, {NO}_{2}

EASY

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 15 - The s-Block Elements>JEE Main - 30 January 2023 Shift 1>Q 86

The alkaline earth metal sulphate(s) which are readily soluble in water is/are:
(A) ${BeSO}_{4}$
(B) ${MgSO}_{4}$
(C) ${CaSO}_{4}$
(D) ${SrSO}_{4}$
(E) ${BaSO}_{4}$

Choose the correct answer from the options given below:

EASY

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 15 - The s-Block Elements>JEE Main - 30 January 2023 Shift 2>Q 87

Which of the following reaction is correct?

EASY

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 15 - The s-Block Elements>JEE Main - 30 January 2023 Shift 2>Q 88

Chlorides of which metal are soluble in organic solvents:

EASY

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 15 - The s-Block Elements>JEE Main - 31 January 2023 Shift 2>Q 89

The element playing significant role in neuromuscular function and interneuronal transmission is :

MEDIUM

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 15 - The s-Block Elements>JEE Main - 31 January 2023 Shift 2>Q 90

The number of alkali metal(s), from

Li, K, Cs, Rb

having ionization enthalpy greater than

400 kJ {mol}^{- 1}

and forming stable super oxide is