Question

a coloured salt which on heating leaves behind a coloured residue evolves a coloured gas acidic to litmus and a coloured gas neutral to litmus
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Answer 1

Answer:

A coloured salt which on heating leaves behind a coloured residue evolves a coloured gas acidic to litmus and a coloured gas neutral to litmus ...

Explanation:

A coloured gas which bleaches moist coloured flowers. (n) Two gases ... (b) A white solid on heating leaves behind a residue, which is yellow when ... colourless gas is evolved, which turns lime water milky. ... gas which has a sharp biting smell and turns red litmus blue. ... (i) Solid P, sodium salt and conc. sulphuric acid.