Question

It is observed that properties of metal can be changed according our
requirement if it is mixed with some other metals Or non-metais. The
process is called allowing. A very common example is that of gold Pure
gold is a very soft and not suitable for making the jewellery To make it hard
it is alloyed with certain metals
1.) What is meant by 22 carat gold ?
2.)What are the constituent of alloy called German Silven?
3.)Name an alloy which has the lowest melting point than its
constituents. What is the composition and word for it is used
4.) Alloys are used in electrical heating devices rather than a pure metal
Give one reason
5. Which of the following oxides are acidic basic and amphoteric in nature
ZnO, CuO, NO AIO, and NO,​

Answer 1

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