Carbide of which of the following elements evolve methane on treatment with water due to diagonal relationship :

B e_{2} C, M g_{2} C

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B e_{2} C, A l_{4} C_{3}

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A l_{4} C_{3}, M g_{2} C

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B e_{2} C, G a_{4} C_{3}

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Solution

The correct option is B $B e_{2} C, A l_{4} C_{3}$
'Be' and 'Al' have diagonal relationship due to similer charge/ratio.
Due to small size 'Al' and 'Be' form carbide which on hydrolysis evolve methane.
answer is (B).

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Hydrolysis of carbides of Be and Al produces methane.What is the ratio of number of moles of ${B e}_{2}$ C and ${A l}_{4}$ $C_{3}$ required to prepare 1 mole of methane?

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Carbide of which of the following elements evolve methane on treatment with water due to diagonal relationship :

The correct option is B Be2C,Al4C3'Be' and 'Al' have diagonal relationship due to similer charge/ratio.Due to small size 'Al' and 'Be' form carbide which on hydrolysis evolve methane.answer is (B).

The correct option is B $B e_{2} C, A l_{4} C_{3}$
'Be' and 'Al' have diagonal relationship due to similer charge/ratio.
Due to small size 'Al' and 'Be' form carbide which on hydrolysis evolve methane.
answer is (B).