JEE Main 2019 (Online) 10th April Evening Slot | p-Block Elements Question 179 | Chemistry

The correct statements among I to III regarding group 13 element oxides are,
(I) Boron trioxide is acidic.
(II) Oxides of aluminium and gallium are amphoteric.
(III) Oxides of indium and thalliumare basic.

(II) and (III) only

(I), (II) and (III)

(I) and (III) only

(I) and (II) only

JEE Main 2019 (Online) 9th April Evening Slot

MCQ (Single Correct Answer)

-1

Out of Syllabus

The amorphous form of silica is :

kieselguhr

quartz

tridymite

cristobalite

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