Pure iron is soft and stretches easily when hot (a) How does this property of iron change when: (i) small amount of carbon is mixed with it? (ii) nickel and chromium are mixed with it? (b) Define an alloy. How is an alloy prepared? (c) An alloy has low melting point and is therefore used for electrical fuse. Name the alloy and write its constituents.
Pure iron is soft and stretches easily when hot (a) How does this property of iron change when: (i) small amount of carbon is mixed with it? (ii) nickel and chromium are mixed with it? (b) Define an alloy. How is an alloy prepared? (c) An alloy has low melting point and is therefore used for electrical fuse. Name the alloy and write its constituents.