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POLYCET (2022) Mock Test Heat - 4
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Question 1 of 20
1. Question
Temperature measured on which scale is called absolute temperature.
a. Celsius scale
b. Kelvin scale
c. Fahrenheit scale
d. All -
Question 2 of 20
2. Question
The process in which liquid phase changes to gaseous phase at a constant temperature at a given pressure is
a. Melting
b. Boiling
c. Humidity
d. Evaporation -
Question 3 of 20
3. Question
What is the reason for hotness of samosa inside and coldness outside
a. Low specific heat
b. High specific heat
c. Outside layer has high specific heat
d. We can’t tell -
Question 4 of 20
4. Question
Convert 0 degree Celsius in kelvin
a. 272
b. 270
c. 274
d. 273 -
Question 5 of 20
5. Question
Rate of evaporation of liquid depends on
a. Surface area temperature
b. Amount of vapour already present in the surrounding air
c. Surface area temperature & Amount of vapour already present in the surrounding air
d. None -
Question 6 of 20
6. Question
Specific heat of mercury in J/Kg-K
a. 130
b. 139
c. 380
d. 391 -
Question 7 of 20
7. Question
Which of the following is SI unit of specific heat ?
a. J/Kg-K
b. J/Kg/K
c. Kg-K/J
d. K-J/Kg -
Question 8 of 20
8. Question
Specific heat of lead in J/Kg-K is
a. 128
b. 130
c. 391
d. 882 -
Question 9 of 20
9. Question
The heat required to change 1 gram of ice into water is
a. 80 cal/gram
b. 100 cal/gram
c. 580 cal/gram
d. 540 cal/gram -
Question 10 of 20
10. Question
2100 is the specific heat of ————in J/kg-K
a. Oil
b. Kerosene oil
c. Zinc
d. Brass -
Question 11 of 20
11. Question
The process of converting solid into liquid is called
a. Boiling
b. Melting
c. Humidity
d. None -
Question 12 of 20
12. Question
S.I units of temperature is
a. Celsius
b. Degrees
c. Kelvin
d. Ohm -
Question 13 of 20
13. Question
Two bodies ‘A’ and ‘B’ are in thermal equilibrium.Then the flow of heat is from
a. A to B
b. B to A
c. Heat doesn’t flow
d. None -
Question 14 of 20
14. Question
The temperature of human body is 37 degree C . Its temperature in Kelvin is
a. 273 K
b. 300 K
c. 310 K
d. 350 K -
Question 15 of 20
15. Question
The amount of heat required to rise the temperature of unit mass of material by a unit is simply termed as
a. Absolute heat
b. Specific heat
c. Specific heat & Absolute heat
d. None -
Question 16 of 20
16. Question
The process of converting solid into liquid is called
a. Boiling
b. Melting
c. Humidity
d. None -
Question 17 of 20
17. Question
Why does water on floor disappear after some time
a. Due to evaporation of molecules
b. Due to condensation of molecules
c. Due to melting of molecules
d. None -
Question 18 of 20
18. Question
The difference in temperature of a body measured as 27 degree C .Its corresponding difference in Kelvin scale is
a. 300 K
b. 0 K
c. -154 K
d. 27 K -
Question 19 of 20
19. Question
The required heat energy to convert 500 ml of water completely to vapour is
a. 27 k.cal
b. 270 k.cal
c. 54 k.cal
d. 540 k.cal -
Question 20 of 20
20. Question
The process in which liquid phase changes to gaseous phase at a constant temperature at a given pressure is
a. Melting
b. Boiling
c. Humidity
d. Evaporation