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JEE Main 202224 JuneMorning Shift
Exam
JEE Main
Year
2022
Date
24 June
Shift
Morning Shift
Subject
Chemistry
Chapter
s Block Elements

JEE Main 2022 · 24 June · Morning Shift · Chemistry · s Block Elements

Which of the following statements are correct ? (A) Both LiCl and...

Which of the following statements are correct ?

(A) Both LiClLiCl and MgCl2{MgCl}_{2} are soluble in ethanol.

(B) The oxides Li2O{Li}_{2}O and MgOMgO combine with excess of oxygen to give superoxide.

(C) LiFLiF is less soluble in water than other alkali metal fluorides.

(D) Li2O{Li}_{2}O is more soluble in water than other alkali metal oxides.

Choose the most appropriate answer from the options given below

Options

  1. A(A)\left(A\right) and (C)\left(C\right) only
  2. B(A),\left(A\right),\left(C\right)and(D)and \left(D\right) only
  3. C(B)\left(B\right) and (C)\left(C\right) only
  4. D(A)\left(A\right) and (D)\left(D\right) only

Correct answer

A. (A)\left(A\right) and (C)\left(C\right) only

Step-by-step solution

(A) Both LiCl and MgCl2LiCl \text{ and } {MgCl}_{2} have covalent character so soluble in ethanol.

(C) LiFLiF have low solubility due to high lattice energy.

So these two statements are correct. And other two statements are wrong.

Since,

(B) Li and Mg do not form superoxide

(D) Li2O{Li}_{2}O is least soluble in water than other alkali metal oxides

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