1.

Which are correct among following

Answer»

`Be_(2)C` on hydrolysis gives a hydrocarbon (X ) and (1 mole ) of (X) gas is required 44.8 litre `O_(2)` at NTP for combustion
`LI(NO_(3))_(2)` on heating gives two gases (X) and (Y) in which one is coloured and another is colourless.
Li metal on reaction with `NH_(3)` form `LiNH_(3)`
A aqueous solution of KCl having more conductance as compare to aqueous NaCl.

Solution :`(A) Be_(2)C+H_(2)O rarrCH_(4)`
`CH_(4)+2O_(2)rarrCO_(2)+2H_(2)O`
For combustion of 1 mole - required oxygen 2 mole
2 at NTP 44.8 litre
`(B) Li(NO_(3))_(2)overset(DELTA)(rarr)Li_(2)O+NO_(2)uarr+O_(2)uarr`
`(C ) Li+NH_(3) rarr Li_(2)(NH)+H_(2)uarr`
(D)The conductance of `K^(+)` ion is greater than as compared to `Na^(+)` aq. KCl `gt` aq NaCl


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