A) Al
B) Fe
C) Zn
D) Ca
Correct Answer: A
Solution :
According to given question \[\text{Al(s)+NaOH(aq)}\xrightarrow{{}}\underset{\begin{smallmatrix} \text{ White} \\ \text{gelatinous}\,\,\text{ppt} \end{smallmatrix}}{\overset{\text{(X)}}{\mathop{\text{Al(OH}{{\text{)}}_{\text{3}}}}}}\,\downarrow \xrightarrow{\text{Excess NaOH}}\underset{\text{Soluble}}{\mathop{\text{Na }\!\![\!\!\text{ Al(OH}{{\text{)}}_{\text{4}}}\text{ }\!\!]\!\!\text{ }}}\,\] Compound \[\text{(X)}\xrightarrow{{}}\text{Al(OH}{{\text{)}}_{\text{3}}}\] on heating gives \[\text{A}{{\text{l}}_{\text{2}}}{{\text{O}}_{\text{3}}}\]which is used in chromatography as an adsorbent. Thus metal M is aluminium (Al).You need to login to perform this action.
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