ChemistryJEE Main 21 Jan 2026, Shift 1·Q5·MCQ·Easy–moderate

p-Block (13–14) · Acidic and amphoteric oxides

Given below are two statements :

Statement I : The number of pairs among [ $\ce{SiO2}$ , $\ce{CO2}$ ], [ $\ce{SnO}$ , $\ce{SnO2}$ ], [ $\ce{PbO}$ , $\ce{PbO2}$ ] and [ $\ce{GeO}$ , $\ce{GeO2}$ ], which contain oxides that are both amphoteric is 2.

Statement II : $\ce{BF3}$ is an electron deficient molecule that can act as a lewis acid, forms adduct with $\ce{NH3}$ and has a trigonal planar geometry.

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

(1)Both Statement I and Statement II are true.
(2)Both Statement I and Statement II are false.
(3)Statement I is true but Statement II is false.
(4)Statement I is false but Statement II is true.

We corrected a printing error in the original paper

Source printed “an electron deficient molecule can act as a lewis acid” and, in option (4), “Statement I is false Statement II is true”.

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See the full 21 Jan 2026, Shift 1 paper