When metal 'M' is treated with NaOH, a whitegelatinousprecipitate 'X' is obtainedwhich issolublein excess of NaOH. Compound 'X' whenheatedstronglygives an oxide which is usedin chromatography as an adsorbent.Then metal 'M'

When metal 'M' is treated with NaOH, a whitegelatinousprecipitate 'X'

1.	When metal 'M' is treated with NaOH, a whitegelatinousprecipitate 'X' is obtainedwhich issolublein excess of NaOH. Compound 'X' whenheatedstronglygives an oxide which is usedin chromatography as an adsorbent.Then metal 'M'
Answer» Zn Ca `Al` `FE` Solution :`Al + 3 NaOH rarr 3 Na^(+) + underset(X)(Al(OH)_(3))` `Al(OH)_(3) OVERSET(NaOH)rarr NaAl(OH)_(4)` `2Al(OH)_(3) overset(Delta)rarr Al_(2)O_(3) + 3H_(2)O` `Al_(2)O_(3)` is used as an adsorbent in chromatography.