A girl placed an iron nail in every five jars of water.
She placed an extra nail in the first jar and strips of different metal in the others.
She then connected the nail with the metal with a copper wire.
The picture below shows her findings after a week.
1. Which of the following questions can be answered from the study.
A. WHY IS IRON HARDER THAN THE FOUR METALS
B. WHICH OF THE FOUR METALS ARE BETTER CONDUCTORS OF HEAT THAN IRON?
C. WHICH OF THE FOUR METALS ARE LESS REACTIVE THAN IRON?
D. WHY IS THE PRESENCE OF WATER ESSENTIAL FOR RUSTING
2. WHICH JAR IS ACTED AS THE CONTROL OF THE EXPERIMENT?
A. JAR WITH ZINC
B. JAR WITH COPPER STRIP
C. JAR WITH TWO IRON NAILS
D. JAR WITH MAGNESIUM STRIP
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in this particular experiment we can observe the reactivity series of metal iron is a medium reactive metal and silver is low reactive metal some metals may not react with each other because of their reaction purpose so some of them just much and some of them are just less
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