Assertion :Zinc reacts with H2SO4 to give H2 gas but copper does not. Reason: Zinc has higher reduction potential than copper.
Assertion – The non-fusible impurities present in iron ore are removed by CaCO3 .
Reason: CaCO3 which decomposes into CaO and CO2. The CaO formed reacts with SiO2 to remove silica