`alpha-a m i n o` acids have high melting points compared to their corresponding amines or carboxylic acid of comparable molecular mass. Give scientific reason.

Give reason: The boiling point of carbonyl compound is greater than alkanes / ethers of comparable molecular masses

Give reason: The boiling point of carboxylic acids are greater than that of aldehydes and ketones of comparable molecular masses.

Compare the melting point of isomeric dihalobenzene.Give reason.

Give scientific reasons: The melting point of the filament of a bulb is very high.

Simplest alpha- a m i n o acid is

Give Scientific reasons: Covalent compounds have low melting and boiling points.

An organic compound 'A' having molecular formula C_2H_6O evolves hydrogen gas on treatment with sodium metal and on treatment with red phosphorous and iodind gives compound 'B'. The compound 'B' on treatment with, alcoholic KNC and on subsequent reduction gives compound 'C'. The compound 'C' on treatment with nitrous acid evolves nitrogen gas. Write the balanced chemical equations for all the reactions involved and identify thecompound 'A' 'B' and 'C'.

Compare the molecular masses of the following compounds and explain the observed melting points

Give scientific reasons for the following: Generally the ionic compounds have high melting points .

Give scientific reasons for the following: Common salt has high melting and boiling points .