JEE Main 2026 — Jan 21, Shift 1 — Chemistry solution

JEE Main2026Jan 21, Shift 1Chemistry

Given below are two statements:

Statement I: The number of pairs among $[S i O_{2}, C O_{2}], [S n O, S n O_{2}], [P b O, P b O_{2}]$ and $[G e O, G e O_{2}]$ , which contain oxides that are both amphoteric is 2.

Statement II: $B F_{3}$ is an electron deficient molecule, can act as a Lewis acid, forms adduct with $N H_{3}$ and has a trigonal planar geometry.

In the light of the above statement, choose the correct answer from the option given below.

A
Both Statement I and Statement II are true.
B
Both Statement I and Statement II are false.
C
Statement I is true but Statement II is false.
D
Statement I is false, Statement II is true.

Solution

$S i O_{2}, C O_{2}, G e O, G e O_{2}$ are acidic. $S n O, S n O_{2}, P b O, P b O_{2}$ are amphoteric. So 2 pairs of amphoteric oxides — Statement I true.

$B F_{3}$ : sp $^{2}$ hybridised, trigonal planar, Lewis acid, forms $B F_{3} \cdot N H_{3}$ adduct — Statement II true.

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