Question

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​

Answer 1

Answer:

1. 1.42

2. coal

3. 3,2

4. silicon and carbon

5. sp2

6. linus pauling