Amorphous Forms of Carbon

Q.

C-C bond length is maximum in

1. acetylene

2. naphthalene

3. graphite

4. diamond

Q. Dangling bonds are not present in .

1. diamond
2. graphite
3. fullerenes

Q. What is the unique ability of carbon atom?

Q. Which of the following is the most polar?

1. $CC{l}_4$
2. $CHC{l}_3$
3. $C{H}_{3}OH$
4. $C{H}_{3}Cl$

Q. With which of the following carbon does not react?

1. Dilute hydrochloric acid
2. Dioxygen gas
3. Dichlorine gas
4. Dihydrogen gas

Q. Carbon cannot be used as reducing agent to obtain Mg from MgO. Why?

Q. The compound having maximum carbon percentage is :

1. peat.
2. bituminous.
3. lignite.
4. anthracite.

Q. What is the volume of air required to completely burn 1 L of $CO$? Assume that all volumes are measured at the same temperature and pressure and also that air contains one-fifth by volume of $O_2$

Q. Which shows maximum catenation property?

1. Te
2. C
3. Se
4. O

Q. Why carbon is so versatile in nature?