Question

The resistivity of an alloy is generally higher than that of its constituent metals. Alloys do not
oxidize (burn) readily at high temperatures. For this reason, they are commonly used in electrical
heating devices, like electric iron, toasters etc. Tungsten is used almost exclusively for filaments
of electric bulbs, whereas copper and aluminium are generally used for electrical transmission
lines.
Match the following below
Sr no Statement A B
1 Element used to make electric bulb. 1. alloys
2 Homogeneous mixture of elements 1. Metals
3 Elements which are used for electrical transmission. 2.
Tungste
n

Answer 1

element used to make bulb. - tungsten

Homogeneous mixture of. - alloy

element

element which used for electrical transmission- metal

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