Q .     Solution `"X"` contains `Na_2CO_3` and `NaHCO_3`. 20 ml of `X` when titrated using methyl orange indicator consumed `60` ml of `0.1 M HCl` solution.In another experiment, `20` ml of `X` solution when titrated using phenolpthalein consumed `20` ml of `0.1` `M HCl` solution.The concentrations(in `mol L^-1`) of `Na_2CO_3` and `NaHCO_3` in `X` are respectively

EAMCET 2013
A

`0.01,0.02`

B

`0.1,0.1`

C

`0.01,0.01`

D

`0.1,0.01`

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