Question

what is a alloy ? and how is it formed​

Answer 1

Explanation:

An alloy is formed by melting a metal and dissolving the other elements in it. The molten solution is then allowed to cool and harden. Alloys generally have more useful properties than pure metals. Most metal objects are made of alloys rather than pure metals.

Answer 2

Answer:

$\huge{\underline{\underline{Alloy→}}}$

$\implies$ An alloy is a homogeneous mixture of two or more metals or a metal and a non-metal. Example–Bronze is an alloy of Copper and Tin.

$\bold{\underline{\underline{Preparation\:of\:Alloys→}}}$

$\implies$ Alloys are formed by mixing two or more metals(or metals with non-metals sometimes) by melting them and cooling them finally. On cooling, the mixture solidifies and is called an alloy. The constituents are mixed homogeneously.

$\huge{\underline{\underline{More\:Info.→}}}$

$\bold{\underline{\underline{Properties\:of\:Alloys→}}}$

1. Alloys are homogeneous mixture.
2. Alloys are more resistant to corrosion.
3. They are harder and stronger than the constituents individually.
4. They are less malleable and less ductile than constituents.
5. They may have higher or lower melting points than that of their constituents.
6. They have improved properties than of their constituents.
7. They have lower electrical conductivity than pure metals.

$\bold{\underline{\underline{Examples→}}}$

1. Bronze=Cu,Sn
2. Brass=Cu,Zn
3. Solder=Cu,Pb
4. Gun metal=Cu(88%),Sn(10%),Zn(2%).
5. Alnico=Al(12%),Ni(20%),Co(5%),Fe(63%)
6. Steel=Fe(98.5-99.5%),C(0.1-1.5%)
7. Stainless Steel=Fe(74%),Cr(18%),Ni(8%)
8. Nichrome=Ni(90%),Cr(10%)

HOPE IT HELPS.