JEE Main 2019 (Online) 10th April Evening Slot | p-Block Elements Question 112 | Chemistry

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JEE Main 2019 (Online) 10th April Evening Slot

MCQ (Single Correct Answer)

-1

The noble gas that does not occur in the atmosphere is :

JEE Main 2019 (Online) 10th April Evening Slot

MCQ (Single Correct Answer)

-1

The number of pentagons in C₆₀ and trigons (triangles) in white phosphorus, respectively, are :

12 and 3

20 and 3

20 and 4

12 and 4

JEE Main 2019 (Online) 9th April Evening Slot

MCQ (Single Correct Answer)

-1

The amorphous form of silica is :

kieselguhr

quartz

tridymite

cristobalite

JEE Main 2019 (Online) 9th April Evening Slot

MCQ (Single Correct Answer)

-1

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

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