A metallic carbide on treatment with water gives a colourless gas which burns readily in air and gives a precipitate with ammonical silver nitrate solution. The gas evolved is :

C H_{4}

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C_{2} H_{6}

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C_{2} H_{4}

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C_{2} H_{2}

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Solution

The correct option is C $C_{2} H_{2}$
$C a C_{2} + H_{3} O^{\oplus} \to C a (O H)_{2} + C H \equiv C H$
$N H_{4} O H + A g N O_{3} - ---------- \to A g^{+} C^{-} \equiv C^{-} A g^{+}$ (White ppt)

calcium carbide on hydration gives acetylene. Which on reaction with sodium hydroxide and silver nitrate produces white ppt.

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A metallic carbide on treatment with water gives a colourless gas which burns readily in air and gives a precipitate with ammonical silver nitrate solution. The gas evolved is :

The correct option is C C2H2CaC2+H3O⊕→Ca(OH)2+CH≡CH NH4OH+AgNO3−−−−−−−−−−−→Ag+C−≡C−Ag+(White ppt)calcium carbide on hydration gives acetylene. Which on reaction with sodium hydroxide and silver nitrate produces white ppt.