1
JEE Main 2019 (Online) 12th April Evening Slot
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Change Language
The C–C bond length is maximum in :
A
C60
B
diamond
C
graphite
D
C70
2
JEE Main 2019 (Online) 12th April Morning Slot
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Change Language
The basic structural unit of feldspar, zeolites, mica, and asbestos is :
A
JEE Main 2019 (Online) 12th April Morning Slot Chemistry - p-Block Elements Question 166 English Option 1
B
(SiO4)4–
C
(SiO3)2–
D
SiO2
3
JEE Main 2019 (Online) 10th April Evening Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
The noble gas that does not occur in the atmosphere is :
A
Ne
B
He
C
Kr
D
Ra
4
JEE Main 2019 (Online) 10th April Evening Slot
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Change Language
The number of pentagons in C60 and trigons (triangles) in white phosphorus, respectively, are :
A
12 and 3
B
20 and 3
C
20 and 4
D
12 and 4
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