1
IAT (IISER) 2022
MCQ (Single Correct Answer)
+4
-1

Choose the correct statement about the structure of $\mathrm{C}_{60}$ fullerene

A
6-membered rings are fused with 5-membered rings ONLY.
B
6-membered rings are fused with 6-membered rings ONLY.
C
5-membered rings are fused with 6-membered rings ONLY.
D
5-membered rings are fused with both 5-membered and 6-membered rings.
2
IAT (IISER) 2020
MCQ (Single Correct Answer)
+4
-1
Which among the following is NOT correct?
A
$\mathrm{H}_3 \mathrm{PO}_4$ is a tribasic acid
B
$\mathrm{H}_3 \mathrm{PO}_3$ is a dibasic acid.
C
$\mathrm{H}_3 \mathrm{PO}_2$ is a monobasic acid.
D
$\mathrm{H}_3 \mathrm{PO}_2$ is a tribasic acid
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