1.

The proposition equal volumes of different gases contain equal numbers of molecules at the same temperature and pressure is known as

Answer»

Avogadro's hypothesis
Gay-Lussac's hypothesis
Planck's hypothesis
Kirchhoff's theory

SOLUTION :ZINC metals is USED to protect iron from CORROSION because zinc is more electropositive than iron . The process of coating the iron surface by zinc is called galvanisation . Zinc metal present on the surface of iron FORMS a thin protective layer of basis zinc carbonate due to reactionbetween zinc , oxygen , CO2 and moisture in air . Since , standard reduction potential of zinc is less than iron , hence iron will not undergo corrosion.


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