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Assertion (A): Non-metals are having higher thermal conductivity than metals. Reason (R): Free electrons In the metals are higher than those of nonmetals.
- a)Both A and R are true and R is the correct explanation of A
- b)Both A and R are true but R is NOT the correct explanation of A
- c)A is true but R is false
- d)A is false but R is true
Correct answer is option 'D'. Can you explain this answer?
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Assertion (A): Non-metals are having higher thermal conductivity than ...
Ans. (d) Non-metals have lower thermal conductivity and free electrons in metal higher then non metal therefore (d) is the answer.
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Assertion (A): Non-metals are having higher thermal conductivity than ...
Assertion (A): Non-metals are having higher thermal conductivity than metals.
Reason (R): Free electrons in the metals are higher than those of nonmetals.
Explanation:
Thermal conductivity is the property of a material to conduct heat. It is a measure of how easily heat can be transferred through a material. Metals are generally known to have higher thermal conductivity compared to non-metals. However, in this particular assertion and reason, both A and R are false.
A) Non-metals having higher thermal conductivity than metals is false. In general, metals have higher thermal conductivity than non-metals. This is because metals have a high number of free electrons that can easily transfer heat energy. Non-metals, on the other hand, have fewer free electrons and therefore exhibit lower thermal conductivity.
R) The reason given for the assertion is also false. Metals have a higher number of free electrons compared to non-metals. These free electrons are responsible for the high thermal conductivity of metals. When heat is applied to a metal, the free electrons gain kinetic energy and move rapidly, transferring heat through the material. Non-metals, on the other hand, have fewer free electrons and therefore have lower thermal conductivity.
Therefore, both the assertion and the reason are false. Non-metals do not have higher thermal conductivity than metals, and the number of free electrons in metals is higher than those in non-metals.
To summarize:
- Assertion (A) is false because metals generally have higher thermal conductivity than non-metals.
- Reason (R) is false because metals have a higher number of free electrons compared to non-metals, which actually contributes to their higher thermal conductivity.
Hence, the correct answer is option 'D' - A is false but R is true.
Reason (R): Free electrons in the metals are higher than those of nonmetals.
Explanation:
Thermal conductivity is the property of a material to conduct heat. It is a measure of how easily heat can be transferred through a material. Metals are generally known to have higher thermal conductivity compared to non-metals. However, in this particular assertion and reason, both A and R are false.
A) Non-metals having higher thermal conductivity than metals is false. In general, metals have higher thermal conductivity than non-metals. This is because metals have a high number of free electrons that can easily transfer heat energy. Non-metals, on the other hand, have fewer free electrons and therefore exhibit lower thermal conductivity.
R) The reason given for the assertion is also false. Metals have a higher number of free electrons compared to non-metals. These free electrons are responsible for the high thermal conductivity of metals. When heat is applied to a metal, the free electrons gain kinetic energy and move rapidly, transferring heat through the material. Non-metals, on the other hand, have fewer free electrons and therefore have lower thermal conductivity.
Therefore, both the assertion and the reason are false. Non-metals do not have higher thermal conductivity than metals, and the number of free electrons in metals is higher than those in non-metals.
To summarize:
- Assertion (A) is false because metals generally have higher thermal conductivity than non-metals.
- Reason (R) is false because metals have a higher number of free electrons compared to non-metals, which actually contributes to their higher thermal conductivity.
Hence, the correct answer is option 'D' - A is false but R is true.
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Assertion (A): Non-metals are having higher thermal conductivity than metals. Reason (R): Free electrons In the metals are higher than those of nonmetals.a)Both A and R are true and R is the correct explanation of Ab)Both A and R are true but R is NOT the correct explanation of Ac)A is true but R is falsed)A is false but R is trueCorrect answer is option 'D'. Can you explain this answer?
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Assertion (A): Non-metals are having higher thermal conductivity than metals. Reason (R): Free electrons In the metals are higher than those of nonmetals.a)Both A and R are true and R is the correct explanation of Ab)Both A and R are true but R is NOT the correct explanation of Ac)A is true but R is falsed)A is false but R is trueCorrect answer is option 'D'. Can you explain this answer? for Mechanical Engineering 2024 is part of Mechanical Engineering preparation. The Question and answers have been prepared according to the Mechanical Engineering exam syllabus. Information about Assertion (A): Non-metals are having higher thermal conductivity than metals. Reason (R): Free electrons In the metals are higher than those of nonmetals.a)Both A and R are true and R is the correct explanation of Ab)Both A and R are true but R is NOT the correct explanation of Ac)A is true but R is falsed)A is false but R is trueCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for Mechanical Engineering 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Assertion (A): Non-metals are having higher thermal conductivity than metals. Reason (R): Free electrons In the metals are higher than those of nonmetals.a)Both A and R are true and R is the correct explanation of Ab)Both A and R are true but R is NOT the correct explanation of Ac)A is true but R is falsed)A is false but R is trueCorrect answer is option 'D'. Can you explain this answer?.
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