Intext question V — task. Science CBSE, Class 10.

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Samples of four metals $A$ , $B$ , $C$ and $D$ were taken and added to the following solution one by one. The results obtained have been tabulated as follows:

Metals	Iron (II) sulphate	Copper (II) sulphate
$A$	No reaction	Displacement
$B$	Displacement
$C$	No reaction	No reaction
$D$	No reaction	No reaction

Metals	Zinc sulphate	Silver nitrate
$A$
$B$	No reaction
$C$	No reaction	Displacement
$D$	No reaction	No reaction

Use the table above to answer the following questions about metals $A$ , $B$ , $C$ and $D$ .

i). Which is the most reactive metal?

is the most reactive metal.

ii). What would you observe if

$B$ is added to a solution of copper(II) sulphate?

When metal

$B$ is added to copper (II) sulphate solution, a displacement reaction occurs, causing the blue colour sulphate solution a copper deposit to form on metal

$B$ .

iii). Arrange the metals

$A$ ,

$B$ ,

$C$ and

$D$ in the order of decreasing reactivity.

Tthe decreasing order of reactivity of the metals is .

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5. Intext question V

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