Heat Transfer MCQ’s – Specific Heat
1 - Question
What is the value of specific heat for brick in J/kg K?
a) 835
b) 735
c) 635
d) 535
View Answer
Explanation: It is a block of ceramic materials. It is built to withstand high temperature, but a low thermal conductivity.
2 - Question
Which one is having the highest value of specific heat?
a) Asphalt
b) Bakelite
c) Chrome brick
d) Fire clay
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Explanation: Specific heat of bakelite is 1465 J/kg K while that of asphalt, chrome brick and fire clay are 920 J/kg K, 835 J/kg K and 960 J/kg K respectively.
3 - Question
What is the value of specific heat for asphalt in J/kg K?
a) 920
b) 820
c) 720
d) 620
View Answer
Explanation: Asphalt is a composite material used to surface roads and airports. It is produced by heating the asphalt binder to decrease its viscosity.
4 - Question
What is the value of specific heat for Bakelite in J/kg K?
a) 1665
b) 1565
c) 1465
d) 1365
View Answer
Explanation: It is also known as polyoxybenzylmethylenglycolanhysride. It is a thermosetting phenol formaldehyde resin. Bakelite was used for its electrical non conductivity.
5 - Question
Which one is having the lowest value of specific heat?
a) Coal
b) Clay
c) Banana
d) Concrete
View Answer
Explanation: Specific heat of concrete is 880 J/kg K while that of coal, banana and clay are1260 J/kg K, 3350 J/kg K and 890 J/kg K respectively
6 - Question
What is the value of specific heat for coal in J/kg K?
a) 1260
b) 1360
c) 1460
d) 1560
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Explanation: The carbon content of coal is around 60% – 80%. The rest is composed of water, air, hydrogen and Sulphur.
7 - Question
What is the value of specific heat for cotton in J/kg K?
a) 1600
b) 1500
c) 1400
d) 1300
View Answer
Explanation: It is also known as polyethylene. These are highly strainly resistant and is used as cushioning and insulating materials in pillows.
8 - Question
Which one is having the highest value of specific heat?
a) Sand
b) Berea
c) Magnesite
d) Limestone
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Explanation: Specific heat of magnesite is 1130 J/kg K while that of sand, barea and limestone are 800 J/kg K, 745 J/kg K and 810 J/kg K respectively.
9 - Question
What is the value of specific heat for sand in J/kg K?
a) 800
b) 700
c) 600
d) 500
View Answer
Explanation: There is a weak bonding between the molecules of sand particles due to which it is exposed to high temperature when left free in the atmosphere.
10 - Question
Which one is having the lowest value of specific heat?
a) Ice
b) Pyrex
c) Paraffin
d) Rubber
View Answer
Explanation: Specific heat of pyrex is 835 J/kg K while that of ice, paraffin and rubber are 2040 J/kg K, 2890 J/kg K and 2010 J/kg K respectively.