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Amphoteric oxides among the oxides of group 14

This type of question, asked 2 times: 31 Jan 2024, 21 Jan 2026 S1. All 2 questions below, oldest first.

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  1. Question 1

    31 Jan 2024

    49
    Consider the oxides of group 14 elements SiO2,GeO2,SnO2,PbO2,COSiO_{2},GeO_{2},SnO_{2},PbO_{2},CO and GeOGeO. The amphoteric oxides are

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  2. Question 2

    21 Jan 2026 S1

    30
    Given below are two statements : Statement I: The number of pairs among [ SiO2,CO2{SiO}_{2},{CO}_{2} ], [SnO,SnO2],[PbO,PbO2]\left\lbrack SnO,{SnO}_{2} \right\rbrack,\left\lbrack PbO,{PbO}_{2} \right\rbrack and [GeO,GeO2]\left\lbrack GeO,{GeO}_{2} \right\rbrack, which contain oxides that are both amphoteric is 2 . Statement II : BF3{BF}_{3} is an electron deficient molecule can act as a lewis acid, forms adduct with NH3{NH}_{3} and has a trigonal planar geometry. In the light of the above statement, choose the correct answer from the option given below.

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