JEE · NEET Previous Year Question

Which of the following statements are correct ?
(A) Both LiCl and are soluble in ethanol.
(B) The oxides O and MgO combine with excess of oxygen to give superoxide.
(C) LiF is less soluble in water than other alkali metal fluorides.
(D) O is more soluble in water than other alkali metal oxides.
Choose the most appropriate answer from the options given below:

Topic: JEE PYQ

Answer: A. Full step-by-step solution below.

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

Correct answer: A

Solution

(a)
(A) Both LiCl and are soluble in ethanol
(B) Li and Mg do not form superoxide
(C) LiF has high lattice energy
(D) O is least soluble in water than other alkali metal oxides

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