POLYCET (2022) Mock Test Heat - 2
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మీకు ఏవైనా కీ లోపాలు దొరికితే లోపాలు మాకు తెలియజేయడానికి వెనుకాడవద్దు.
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Question 1 of 20
1. Question
Which of the following is the reverse process of evaporation ?
a. Boiling
b. Evaporation
c. Condensation
d. Melting -
Question 2 of 20
2. Question
Freezing of water takes place at
a. 1 atm , 0 degree
b. 1 atm , 100 degree
c. 70 atm , 0 degree
d. 76 atm , 100 degree -
Question 3 of 20
3. Question
Pick out the correct one from the following ?
a. Density of Water > Density of ice
b. Density of Water < Density of ice c. Density of Water = Density of ice d. A or B -
Question 4 of 20
4. Question
If two systems A,B are in thermal equilibrium individually with another system C, then the systems A,B are in
a. Thermal equilibrium with each other
b. Only one system is in thermal equilibrium
c. No relation
d. Not in thermal equilibrium -
Question 5 of 20
5. Question
What is the specific heat value of Kerosene oil
a. 2000 J/Kg-K
b. 1800 J/Kg-K
c. 2200 J/Kg-K
d. 2100 J/Kg-K -
Question 6 of 20
6. Question
Which metal does possess the specific heat of 0.092 cal/g-0 ?
a. Zinc
b. Brass
c. Copper
d. Iron -
Question 7 of 20
7. Question
The temperature(T) of two samples of the same substance with masses m1 and m2 and temperatures T1 and T2 , when added together is
a. m2T1+m1T2 / m1+m2
b. m1T1+m2T2 / m1+m2
c. m1T2 + m2T1
d. m1T1 + m2T2 -
Question 8 of 20
8. Question
The phase change from gas to liquid at the surface of the liquid is called
a. Evaporation
b. Boiling point
c. Condensation
d. Melting point -
Question 9 of 20
9. Question
The degree of hotness or coldness is termed as
a. Heat
b. Temperature
c. Pressure
d. Both Heat & Temperature -
Question 10 of 20
10. Question
The process in which the substance in liquid phase changes to solid phase by losing same energy from it is called
a. Freezing
b. Humidity
c. Not mentioned
d. None -
Question 11 of 20
11. Question
The average kinetic energy of the molecules is ____ to the absolute temperature.
a. Directly proportional
b. Inversely proportional
c. Equal
d. None of these -
Question 12 of 20
12. Question
If two systems A,B are in thermal equilibrium individually with another system C,then the systems A,B are in
a. Thermal equilibrium with each other
b. Only one system is in thermal equilibrium
c. No relation
d. Not in thermal equilibrium -
Question 13 of 20
13. Question
The temperature of a steel rod is 330K . Its temperature in 0C is
a. 55 degree C
b. 57 degree C
c. 59 degree C
d. 53 degree C -
Question 14 of 20
14. Question
Specific heat of mercury in J/Kg-K
a. 130
b. 139
c. 380
d. 391 -
Question 15 of 20
15. Question
Latent heat of vapourization units in C.G.S are
a. cal/g
b. j/kg
c. J/kg
d. g/cal -
Question 16 of 20
16. Question
The heat energy is used to change the state of water from liquid to vapour is called
a. Vapourization
b. Latent heat of vapourization
c. Thermal equilibrium
d. None -
Question 17 of 20
17. Question
1 cal/g____ degree C=
a. 4.28 x 10 power 3 J/kg-K
b. 4.2 x 10 power 3 J/kg-K
c. 4.8 x 10 power 3 J/kg-K
d. 4.4 x 10 power 3 J/kg-K -
Question 18 of 20
18. Question
Heat transferred from
a. From high temperature to low temperature
b. From low temperature to high temperature
c. No transformation
d. None -
Question 19 of 20
19. Question
When heat energy enters your body you get the feeling of
a. Hotness
b. Coldness
c. No change
d. We can’t say -
Question 20 of 20
20. Question
Which of the following is the reverse process of evaporation ?
a. Boiling
b. Evaporation
c. Condensation
d. Melting