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(a→ q; b→r;c→ s; d→ p; e → q; f→t)

(a→ p; b→q;c→ r; d→ s; e → t; f→q)

(a→ s; b→t;c→ q; d→ p; e → r; f→t)

(a→ t; b→s;c→ p; d→ q; e → r; f→s)

answer is A.

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Detailed Solution

(a→q) Oxalic acid dihydrate loses H,O when heated at 105°C.(b→r) When heated at 200°C or when refluxed with H2SO4 at 90°C, it decomposes into CO2,CO,HCOOH, and H2O.(COOH)2→CO2+HCOOH→CO+H2O(c→s) Malonic acid on heating with P2O5 loses H2O and forms carbon suboxide.(d→q) Oxalic acid is oxidised by KMnO4 to CO2 (COOH)2 to [O] →2CO2 + H2O)(e→q) It is the industrial method fo the preparation of oxalic acid.(f→t) Malonic acid under these conditions given MeCOOH + CO2.

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