Q.

Mg(s)+O2(g)MgO(s)  

In this experiment, the ash of MgO is dissolved in water and the filtrate is tested with red litmus paper and observed to be Blue in color. Then the nature of the solution is

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a

Basic

b

Acidic

c

All

d

Neutral

answer is B.

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Detailed Solution

Mg(s)+O2(g)MgO(s) , MgO(s)+H2OMg(OH)2(aq) 

Mg(OH)2  is Basic in nature which turns Red litmus into blue color.

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