Fullerenes

Q. 29.The edge length of unit cell of a diamond is 356.7pm. The C-C bond length in diamond, assuming them to the spheres in contact is what?

Q. 21. What is the difference between ( mvr= nh/2π) and ( mvr= \sqrt{}l(l+1 ) h/2π)

Q.

Explain the structure of Buckminsterfullerene.

Q. 17. In diamond, carbon atoms occupy FCC lattice points as well as alternate tetrahedral voids. If edge length of the unit cell is 356 pm, then the radius of carbon atom is

Q. In iodination ; for preparation of iodomethanecompound used is(1) HIO3(3) Both (1) & (2)(2) HgO(4) H

Q. Carbon$-60$ Contains :

1. $\text{20 pentagons and 12 hexagons}$
2. $\text{12 pentagons and 20 hexagons}$
3. $\text{30 pentagons and 30 hexagons}$
4. $\text{24 pentagons and 36 hexagons}$

Q. How many atoms of carbon are present ina diamond weighing 0.5 carat ?( One carat weights 200mg and assume diamond to be pure carbon

Q. 1How to do nomenclature of cyclic compounds other than benzene and benzene if more substituents, double bond and triple bond are there how numbering is done? 2 And whether chain isomerism is only shown by alkanes?

Q. How many five-membered rings are there in fullerenes?

1. $10$
2. $12$
3. $34$
4. $15$

Q. which of the following is similar to graphite 1)B3C 2)diborane 3)B

Q. $C_{60}$ contains

1. 20 pentagons and 12 hexagons
2. 12 pentagons and 20 hexagons
3. 30 pentagons and 30 hexagons
4. 24 pentagons and 36 hexagons

Q. Explain the structures of Fullerene?

Q. what are allotrophs

Q. Write the postulate of Kossel for formation of Ionic bond.?

Q.

Which of the following is/are crystalline form(s) of carbon?

1. Diamond

2. Graphite

3. Coke

4. Charcoal

Q. Match the column I with column II and mark the appropriate choice.

	Column I		Column II
(A)	Used as lubricant	(i)	Carbon dioxide
(B)	Oxide with three dimensional structure	(ii)	Graphite
(C)	Used in solar calls	(iii)	Silica
(D)	Anhydride of carbonic acid	(iv)	Silicone

1. $\left(A\right)\to \left(iv\right),\left(B\right)\to \left(iii\right),\left(C\right)\to \left(ii\right),\left(D\right)\to \left(i\right)$
2. $\left(A\right)\to \left(iii\right),\left(B\right)\to \left(ii\right),\left(C\right)\to \left(i\right),\left(D\right)\to \left(iv\right)$
3. $\left(A\right)\to \left(ii\right),\left(B\right)\to \left(iii\right),\left(C\right)\to \left(iv\right),\left(D\right)\to \left(i\right)$
4. $\left(A\right)\to \left(iv\right),\left(B\right)\to \left(i\right),\left(C\right)\to \left(iii\right),\left(D\right)\to \left(ii\right)$