For the following question , two statements are given-one labelled Assertion (A) and the other labelled Reason (R). Select the correct answer to these questions .Assertion (A) : Alloys are commonly used in electrical heating devices like electric iron and heater.Reason (R) : Resistivity of an alloy is generally higher than that of its constituent metals but the alloys have low melting points than their constituent metals.
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a and r are correct and r is the reson if a
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