Subject :NSO Class : Class 8
Nitika, a class 8 student performed a few experiments
to study the reactivity of metals. She summarised her
observations in the given table.
Identify W, X, Y and Z.
| W | X | Y | Z | |
| A | Sodium | Iron | Copper | Lead |
| B | Aluminium | Iron | Gold | Potassium |
| C | Calcium | Magnesium | Aluminium | Copper |
| D | Magnesium | Calcium | Zinc | Silver |
answer has to be Aonly sodium and potassium react with cold water
Ans 1:
Class : Class 8
(A)