1. The C – C bond length in C60 is [ ]
A) 1.54Å B) 1.42Å C) 1.4Å D) 1.20Å
2. Which of the following is amorphous form of carbon [ ]
A) Diamond B) Graphite C) C60 D) Coal
3. The number of sigma and pi bonds in C2H2
molecule are [ ]
A) 3, 2 B) 2, 3 C) 5, 1 D) 7, 0
4. The pair of elements which exhibits the property of catenation is [ ]
A) Sodium and silicon B) Chlorine and carbon
C) Carbon and sodium D) Silicon and carbon
5. The hybridisation of each carbon atom in Graphite is [ ]
A) sp B) sp2 C) sp2 D) sp3d
6. The concept of hybridisation was introduced by [ ]
A) Linus Pauling B) R.F. Curl C) H.W.Kroto D) R.E.Smalley
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Answer:
1. 1.42
2. coal
3. 3,2
4. silicon and carbon
5. sp2
6. linus pauling
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