State the colour change in a neutral litmus in presence of (i) acidic (ii) alkaline medium

State the colour change in three different indicators in presence of HCl gas.

State the colour change in a universal indicator e.g. pH paper on (i) slightly acidic soil (ii) slightly alkaline soil (iii) dairy milk (iv) human blood tested for medical diagonsis

It is best to carry out reaction with sugers in neutral or acidic medium and not is alkaline medium because in alkaline medium sugars undergo?

Carbonyl compound which contains alpha-H gives aldol condenation reaction in presence of alkaline medium. The reaction between two molecules of acetaldehyde take placeas follows in presence of base Aldol condensation reaction is given by

Carbonyl compound which contains alpha-H gives aldol condenation reaction in presence of alkaline medium. The reaction between two molecules of acetaldehyde take placeas follows in presence of base Intramolecular aldol condensation reaction is given by

Carbonyl compound which contains alpha-H gives aldol condenation reaction in presence of alkaline medium. The reaction between two molecules of acetaldehyde take placeas follows in presence of base

State the change in colour of pure concentrated nitric acid on initial and prolonged decomposition.

Mention the colour changes observed when the following indicators are added to acids : Alkaline phenolphthalein solution

State the cation responsible for turning moist neutral litmus red on reaction with dil . HNO_(3) .

Write the main difference between an acid and a base. With the help of suitable examples, explain the term neutralization and the formation of- (i) acidic, (ii) basic and (iii) neutral salts.