CaCO3(s)Δ→A(s)+B(g) A(s)carbon,Δ→C(s)+D(g) (E)+H2O+(B)→(F)+CaCO3 (F)+H2O→(G) Identify (E) and (G):
A
E=CaCN2,G=NH2CONH2
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B
E=CaCN,G=NH2CONH2
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C
E=Ca2CN2,G=NHCOONH2
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D
E=Ca2CN4,G=NHCOONH2
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Solution
The correct option is AE=CaCN2,G=NH2CONH2 CaCO3(s)Δ→CaO(s)+CO2(g) CaO(s)carbon,Δ→CaC2(s)+CO(g) CaCN2+H2O+CO2→NH2CN+CaCO3 NH2CN+H2O→NH2CONH2 So E=CaCN2,G=NH2CONH2 Hence option A is correct.