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Q.

Aqueous zinc oxide reacts with excess of NaOH, the final products are:


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a

Question Image

b

Question Image

c

Both A and B

d

None of the above 

answer is B.

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Detailed Solution

Concept- Zinc, zinc hydroxide, or zinc oxide can be dissolved in an aqueous solution of sodium hydroxide to create solutions of sodium zincate.
We can argue that sodium zincate and water are produced when zinc oxide combines with too much sodium hydroxide. Temperatures between Question Image and Question Image are required for this process.
Question ImageHence, the correct answer is option (2).
 
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