V. K. Sally and R. Goel Solutions for Chapter: Carbon and its Compounds, Exercise 1: EXERCISE 4A

Which among the following is not the free state of carbon -

A chemical bond formed between two non-metallic elements by the mutual sharing of one or more pairs of electrons is called:

Buckminsterfullerene has _____ atoms in its molecule.

Which of the following statements are usually correct for carbon compounds? These
(i) are good conductors of electricity
(ii) are poor conductors of electricity
(iii) have strong forces of attraction between their molecules
(iv) do not have strong forces of attraction between their molecules

Which of the following is not a straight chain hydrocarbon -

In electron dot structure, the valence shell electrons are represented by crosses or dots.
(a) The atomic number of chlorine is $17$. Write its electronic configuration
(b) Draw the electron dot structure of chlorine molecule.

Choose from the list below, the substance or substances that have :
(i) Single covalent bond only
(ii) Double covalent bond only
(iii) Single and double covalent bonds
(iv) Triple covalent bond only
(v) Single and triple covalent bonds
List :

${\mathrm{Cl}}_2, {\mathrm{H}}_2\mathrm{O}, {\mathrm{C}}_2{\mathrm{H}}_6, {\mathrm{O}}_2, {\mathrm{C}}_2{\mathrm{H}}_4, {\mathrm{N}}_2, {\mathrm{C}}_2{\mathrm{H}}_2$

Classify the following as ionic or covalent compounds :
(i) Hydrogen chloride,
(ii) Sodium chloride,
(iii) Sodium sulphide
(iv) Carbon tetrachloride
(v) Glucose (vi) Methane
(vii) Magnesium oxide
(viii) Magnesium sulphide
(ix) Urea.
(x) Water