Question

ASSERTION : Alloys are used in Electric heaters and Electric irons.
REASON : Alloys do not oxidise ( or burn) easily at higher temperature.

Answer 1

Answer:

Assertion and Reason are true but reason is not the correct explanation.

Alloys are used in electrical heating devices rather than pure metals because the resistivity of an alloy is more than the resistivity of a pure metal.

Answer 2

The assertion is TRUE but the reason is FALSE.

Alloys always show high resistivity than pure original metal but have relatively low melting point; therefore not ideal for the use in heating device such as iron or immersion rod. Alloys have a wide variety of uses. The interpretation of alloys actually reduces the material’s price and maintains the metal’s desired properties. The combination of metals improves material properties and offers resistance to oxidation and mechanical strength.

• Used for many home decorative items and is composed of copper and zinc.
• The alloy of bronze is used for making statues and medals as well as home decorates.
• The carbon steel alloy is used for weapon making, while in household items, it’s used in high tensile blade making. These are used in grinders, blenders and juicer.

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