An amorphous solid (X) burns in air to form a gas (Y) which turns lime water milky. This gas decolourises aqueous solution of acidified `KMnO_4`. Gas (Y) reacts with oxygen to give another gas (Z) which is responsible for acid rain. X, Y and Z areA. X-C, Y-CO, Z-`CO_2`B. X-S, Y-`SO_2` , Z-`SO_3`C. X-P , Y-`P_2O_3` ,Z - `P_2O_5`D. X-S , Y-`SO_3` ,Z-`H_2SO_4`

An amorphous solid (X) burns in air to form a gas (Y) which turns lime

1.	An amorphous solid (X) burns in air to form a gas (Y) which turns lime water milky. This gas decolourises aqueous solution of acidified `KMnO_4`. Gas (Y) reacts with oxygen to give another gas (Z) which is responsible for acid rain. X, Y and Z areA. X-C, Y-CO, Z-`CO_2`B. X-S, Y-`SO_2` , Z-`SO_3`C. X-P , Y-`P_2O_3` ,Z - `P_2O_5`D. X-S , Y-`SO_3` ,Z-`H_2SO_4`
Answer» Correct Answer - B `{:(S,+O_2,toSO_2),("(X)",,"(Y)"):}` `{:(SO_2+,Ca(OH)_2to , CaSO_3 darr , + H_2O),("(Y)",,"white ppt.",):}` `{:(2KMnO_4+,5SO_2+,2H_2OtoK_2SO_4+,2MnSO_4 +,2H_2SO_4),("Purple","(Y)",,"colourless",):}` `{:(2SO_2+,O_2to,2SO_3),("(Y)",,"(Z)"):}` `underset"(Z)"(SO_3) + H_2O to H_2SO_4` (responsible for acid rain )

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