Question

A student performed the first set of
experiments with four test tubes
containing solutions and metal pieces as
indicated in the figure. In the second set of
experiments, the metal pieces are
interchanged between test tubes P and Q
and also between test tubes R and S.
P
ZnSo.
FeSO
Cu
Mg
R
S
- MgSO
CuSO
Zn
Fe
In which Test tube(s) no reaction will occur
in both sets of experiments ?​

Answer 1

Answer:

Explanation:

activity series, the elements on the top can displace element at the bottom but not vice versa. From the given question, Aluminium can displace iron and copper sulphate solutions. Hence, colour change will be observed in Test-Tube A and Test-tube B. Iron metal cannot displace aluminium but can displace copper sulphate solution. Hence Test-tube D’s colour will change too.

Thus, colour change observed in A, B and D.

Since aluminium displaces both the elements, it is the most reactive elements among all. It is above both the elements in activity series

Answer 2

Answer:

option is B) R

hope u understood