A white solid is heated, gas 'P' and Q are evolved leaving behind a solid residue R. P is an acidic gas which turns lime water milky. Q is a neutral gas which condenses into a liquid and turns anhydrous CuSO4 blue in colour. R is used for softening of hard water after recrystallisation of it. Gases P and Q respectively are -

A white solid is heated, gas 'P' and Q are evolved leaving behind a so

1.	A white solid is heated, gas 'P' and Q are evolved leaving behind a solid residue R. P is an acidic gas which turns lime water milky. Q is a neutral gas which condenses into a liquid and turns anhydrous CuSO4 blue in colour. R is used for softening of hard water after recrystallisation of it. Gases P and Q respectively are -
Answer» ahajiwExplanation:white solid is heated, gas 'P' and Q are evolved LEAVING behind a solid residue R. P is an acidic gas which turns lime water milky. Q is a NEUTRAL gas which condenses into a liquid and turns anhydrous CUSO4 BLUE in colour. R is used for softening of hard water after recrystallisation of it. Gases P and Q respectively are -