Of the substances below, the one with the highest specific heat is A water. B. e

Question

Of the substances below, the one with the highest specific heat is A water. B. ethyl alchohol. C. ice. D. gold. Of the substances below, the one with the lowest specific heat is A. water. B. ice. C. concrete. D. gold. Heat can be transferred through a vacuum by which one or more of the following? A. conduction B. convection C. radiation D. condensation Heat can be transferred through a gas by which one or more of the following? A. conduction B. convection C. radiation D. condensation Heat can be transferred through a liquid by which one or more of the following? A. conduction B. convection C. radiation D. condensation Heat can be transferred through a solid by which one or more of the following? A. conduction B. convection C. radiation D. condensation

Explanation / Answer

31)Ans:

Specific Heat Capacity at 25oC in J/goC

Specific heat of Water is 4.184 J/goC.

Specific heat of Ice is        2.108 J/goC.

Specific heat of Ethyl Alchohol is 2.46 J/goC.

Specific heat of Gold is                0.129 J/goC.

So the highest Specific heat capacity is for Water (H20).

Hence the option A is correct.

32)Ans:

Specific Heat Capacity at 25oC in J/goC

Specific heat of Water is 4.184 J/goC.

Specific heat of Ice is        2.108 J/goC.

Specific heat of Concrete is         0.18 J/goC.

Specific heat of Gold is                0.129 J/goC.

So the lowest Specific heat capacity is for Gold and is being a heavy metal, has a very low heat capacity [c=0.128 J/gK].

Hence the option D is correct.

33)Ans:

Heat travels through a vacuum by infrared radiation since it is the only one that does not need any kinda material for the transfer.

So the option C is correct.

34)Ans:

Convection is heat transfer by mass motion of a fluid such as air or water when the heated fluid is caused to move away from the source of heat, carrying energy with it.

Hence the option B is correct.

35)Ans:

Convection can also lead to circulation in a liquid, as in the heating of a pot of water over a flame.

Hence the option B is correct.

36)Ans:

Heat transfer by conduction relies on direct contact between atoms or molecules. Conduction is heat transfer by molecular agitation within a material wihout any motion of the material as a whole.

Hence the option A is correct.

Related Questions

Navigate

• Browse (All)
• Browse O
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.