JEE Main 2022 · 27 Jul · Shift 1 · Chemistry Q69

ChemistrySingle correct+4 / -1Question 69 of 90

Given below are two statements.

Statement I: The chlorides of Be and Al have Cl-bridged structure. Both are soluble in organic solvents and act as Lewis bases.

Statement II: Hydroxides of Be and Al dissolve in excess alkali to give beryllate and aluminate ions.

In the light of the above statements, choose the correct answer from the options given below.

Both Statement I and Statement II are true.

Both Statement I and Statement II are false.

Statement I is true but Statement II is false.

Statement I is false but Statement II is true.

Answer and worked solution

Official answer: D

Statement I. The chlorides are Cl-bridged and organic-soluble, but they act as Lewis acids. False.

Statement II. Both hydroxides are amphoteric and give $\mathrm{[Be(OH)_4]^{2-}}$ and $\mathrm{[Al(OH)_4]^-}$ . True.

(D)

Topics:Alkaline earth metals Group 13

JEE Main 2022 · 27 Jul · Shift 1, Chemistry question 69