Metals react with acids to give
Oxygen gas
Hydrogen gas
Sulphur dioxide gas
Carbon dioxide gas
B.
Hydrogen gas
Which of the following statement is correct?
Zinc is more reactive than sodium
Copper is more reactive than zinc
Zinc is more reactive than iron
Iron is more reactive than zinc
(a) Observe the following figure,(a) and (b) and complete the reaction and tell in which beaker/beakers displacement reactions take place.
(ii) Arrange Zinc, Aluminium, Iron and Copper in the decreasing order of reactivity.
The most reactive metal is
Iron
Gold
Zinc
Potassium
The best electrical conductor is
gold
copper
silver
aluminium