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Q.

[96]

Is it true that the coils of electric toasters and electronic irons are made of an alloy rather than a pure metal?


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a

True

b

False  

answer is A.

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Detailed Solution

The above statement is True.
The materials used to make coils of electric toasters and electric irons must withstand a high power supply. Alloys have higher resistivity than pure metals, and alloys don’t oxidize quickly. Because an alloy has a higher resistance than a pure metal, electric toasters and irons have alloy coils rather than pure metal ones. Even at very high temperatures, the alloys are difficult to melt. This is the reason why alloys are used rather than pure metals.
 
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