Alloys are commonly used in electrical

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Q.
Assertion: Alloys are commonly used in electrical heating devices like electric iron and heater.
Reason: Resistivity of an alloy is generally higher than that of its constituent metals but the alloys have low melting points than their constituent metals.

1 Both assertion and reason are correct and reason is the correct explanation of assertion.

2 Both assertion and reason are correct, but reason is not the correct explanation of assertion.

3 Assertion is true, but reason is false.

4 Assertion is false, but reason is true.

Ans.
(3)

Alloys are the combination of metals and they are used in heating devices due to their high resistance which produces more heat energy. Alloys are made up of weak bonds, their melting point is higher than their constituent metals. Thus, assertion is true but reason is false.

Solution

Q.
Assertion: Alloys are commonly used in electrical heating devices like electric iron and heater.
Reason: Resistivity of an alloy is generally higher than that of its constituent metals but the alloys have low melting points than their constituent metals.

1 Both assertion and reason are correct and reason is the correct explanation of assertion.

2 Both assertion and reason are correct, but reason is not the correct explanation of assertion.

3 Assertion is true, but reason is false.

4 Assertion is false, but reason is true.

Ans.
(3)

Alloys are the combination of metals and they are used in heating devices due to their high resistance which produces more heat energy. Alloys are made up of weak bonds, their melting point is higher than their constituent metals. Thus, assertion is true but reason is false.

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Solution

Q. Assertion: Alloys are commonly used in electrical heating devices like electric iron and heater. Reason: Resistivity of an alloy is generally higher than that of its constituent metals but the alloys have low melting points than their constituent metals.

1 Both assertion and reason are correct and reason is the correct explanation of assertion.

2 Both assertion and reason are correct, but reason is not the correct explanation of assertion.

3 Assertion is true, but reason is false.

4 Assertion is false, but reason is true.

Ans. (3) Alloys are the combination of metals and they are used in heating devices due to their high resistance which produces more heat energy. Alloys are made up of weak bonds, their melting point is higher than their constituent metals. Thus, assertion is true but reason is false.

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Q.
Assertion: Alloys are commonly used in electrical heating devices like electric iron and heater.
Reason: Resistivity of an alloy is generally higher than that of its constituent metals but the alloys have low melting points than their constituent metals.

Ans.
(3)

Alloys are the combination of metals and they are used in heating devices due to their high resistance which produces more heat energy. Alloys are made up of weak bonds, their melting point is higher than their constituent metals. Thus, assertion is true but reason is false.