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Q.

Aluminium + Sulphuric acid  Aluminium sulphate + Hydrogen.

The balanced chemical equation for the given word equation is

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a

2Al (s) + H2SO3(aq)  Al2(SO4)3(s)  + H2(g)

b

2Al (s) + H2SO3 (aq) Al2(SO3)3 (s) + H2(g)

c

2Al (s) + 3H2SO4(aq)  Al2(SO3)3 (s) + 3H2(g)

d

2Al (s) + 3H2SO4(aq)  Al(SO4)3 (s)  + 3H2(g)

answer is D.

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Detailed Solution

The chemical formulae for aluminium, sulphuric acid, aluminium sulphate, and hydrogen are Al, H2SO4, Al2(SO4)3, and H2 respectively. 

Therefore, the balanced chemical equation for the given word equation is

   2Al (s)   +    3H2SO4 (aq)   Al2(SO4)3 (s)  +   3H2 (g)

Aluminium + Sulphuric acid  rightwards arrowAluminium sulphate + Hydrogen

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