what is galvanizing?name two alloy which contains tin as one of the component. state three uses of hydrogen. name the used to make lead of pencil. why do gold and silver occur free in nature? define corrosion. what is rust? why do copper vecies obtain a green coating in a rainy season?pllllllllllllzzzzzzzzzzzzzz answer plzzzzzzzzzzz
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a) adding a coat of molten metal to the surface of a substance in order to protect it is galvanizing.
b) brass steel
c) in hydrogen bombs....in laboratories for experiments.....
d) pencil lead contains granite
e) they occur in free state bcoz they are chemically independent
f) when a substance comes in contact in moisture and loses its special properties it gets corroded
g) when moisture comes in contact to iron particles then it loses its property leaving behind a red powdery substance called rust
b) brass steel
c) in hydrogen bombs....in laboratories for experiments.....
d) pencil lead contains granite
e) they occur in free state bcoz they are chemically independent
f) when a substance comes in contact in moisture and loses its special properties it gets corroded
g) when moisture comes in contact to iron particles then it loses its property leaving behind a red powdery substance called rust
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