- 1(current)
Q. No.The number of pentagons in C60 and trigons (triangles) in white phosphorus, respectively, are :
1. 12 and 3
2. 20 and 3
3. 20 and 4
4. 12 and 4
Subtopic: Structure & Properties of Allotropes of C |
67%
From NCERT
JEE
Please attempt this question first.
Hints
Please attempt this question first.
Subtopic: Structure & Properties of Allotropes of C |
70%
From NCERT
JEE
Please attempt this question first.
Hints
Please attempt this question first.
Graphite is a soft solid lubricant extremely difficult to melt. The reason for this anomalous behavior is that graphite :
| 1. | is a non-crystalline substance. |
| 2. | is an allotropic form of diamond. |
| 3. | has molecules of variable molecular masses like polymers. |
| 4. | has carbon atoms arranged in large plates of rings of strongly bound carbon atoms with weak interplate bonds. |
Subtopic: Structure & Properties of Allotropes of C |
86%
From NCERT
JEE
Please attempt this question first.
Hints
Please attempt this question first.
- 1(current)
Q. No.
© 2025 GoodEd Technologies Pvt. Ltd.