The melting and boiling points of carbon compounds are generally low and they are largely non-conductors of e…

Question

The melting and boiling points of carbon compounds are generally low and they are largely non-conductors of electricity. State two conclusions based on these two properties.

Accepted Answer

## Model Answer **Conclusion 1:** The forces of attraction between the molecules of carbon compounds are not very strong (which explains their low melting and boiling points). **Conclusion 2:** The bonding in carbon compounds does not give rise to any ions (which explains why they are non-conductors of electricity). Carbon forms covalent bonds by sharing electrons rather than transferring them. *Source: Chapter 4, Section 4.1 – Bonding in Carbon* --- ## Explanation - The passage directly states both conclusions, so quote them precisely — examiners expect these exact ideas. - Conclusion 1 must link **low M.P./B.P. → weak intermolecular forces**. - Conclusion 2 must link **non-conduction → no ions formed → covalent (sharing) bonding**. - Avoid writing lengthy explanations; one crisp sentence per conclusion is enough for 1 mark each.

Science (086) — CBSE Class 10 board question