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Q.

What type of reaction is Al + NaOH?

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a

Decomposition Reaction

b

Displacement Reaction

c

Precipitation Reaction

d

Double Displacement Reaction

answer is B.

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Detailed Solution

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The reaction of Aluminium with Sodium Hydroxide is a Displacement reaction.

(Displacement reaction is where one element is more reactive than the other and displaces it in a reaction).

2Al + 2NaOH + 2H2O →2NaAlO2+ 3H2

 

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