|
In what ways are the gas thermometers superior to mercury thermometers?
|
|
0
|
689
|
August 22, 2016
|
|
The bulb of one thermometer is spherical while that of other is cylindrical. Both have equal amounts of mercury, which one will respond quickly to temperature?
|
|
0
|
1941
|
August 22, 2016
|
|
Should a thermometer bulb have large heat capacity or small heat capacity ? Explain
|
|
0
|
2757
|
August 22, 2016
|
|
Distinguish clearly between tqgnperature and heat
|
|
0
|
433
|
August 22, 2016
|
|
What is molar heat capacity?
|
|
0
|
692
|
August 22, 2016
|
|
What is absolute or Kelvin scale in modem thermometry
|
|
0
|
406
|
August 22, 2016
|
|
The top of a lake is frozen. Air in contact is at -15°C. What do you expect the maximum temperature of water?
|
|
1
|
2361
|
August 22, 2016
|
|
Steam causes more severe bums than boiling water though both have same temperature. Why?
|
|
0
|
593
|
August 22, 2016
|
|
What is latent heat energy?
|
|
0
|
1079
|
August 22, 2016
|
|
What is mechanical equivalent?
|
|
0
|
474
|
August 22, 2016
|
|
Hot water bottles are used for fermentation. Why?
|
|
0
|
1082
|
August 22, 2016
|
|
Water has a large specific heat, 1 cal per gram per °C. List some important uses of this property
|
|
0
|
446
|
August 22, 2016
|
|
It is sometimes injurious to put on wet clothes. Why?
|
|
0
|
1383
|
August 22, 2016
|
|
Is the specific heat of sand greater than that of water?
|
|
0
|
561
|
August 22, 2016
|
|
Do water and ice have the same specific heats?
|
|
0
|
612
|
August 22, 2016
|
|
Why does a gas possess two principal specific heats?
|
|
0
|
531
|
August 22, 2016
|
|
State Dulong and Petit's law?
|
|
0
|
1650
|
August 22, 2016
|
|
What is specific heat capacity?
|
|
0
|
1079
|
August 22, 2016
|
|
What is the thermal capacity of a body?
|
|
0
|
757
|
August 22, 2016
|
|
Tea gets cooled when sugar is added to it Why?
|
|
0
|
2497
|
August 22, 2016
|
|
A beaker is filled upto brim with water at 4°C. Water overflows when beaker is either heated or cooled. Why?
|
|
0
|
2120
|
August 22, 2016
|
|
Brass disc is fitted inside a hole in a steel plate. How can be loosen the brass disc?
|
|
0
|
1065
|
August 22, 2016
|
|
A brass disc with a circular concentric hole in it is heated. Will the area of the hole increase or decrease?
|
|
0
|
431
|
August 22, 2016
|
|
A brass rim is fitted round a steel disc. Should the system be heated or cooled to loosen the brass rim?
|
|
0
|
529
|
August 22, 2016
|
|
Does a liquid possess coefficient of linear or superficial expansion?
|
|
0
|
579
|
August 22, 2016
|
|
Each side of a cube increases by 0.01% on heating. How much is the area of its faces and volume increased?
|
|
0
|
2029
|
August 22, 2016
|
|
Liquid is filled in a long cylindrical vessel upto a specific level. On heating, liquid level does not change. How is that possible?
|
|
0
|
388
|
August 22, 2016
|
|
Why do cracked rocks break during winter
|
|
0
|
867
|
August 22, 2016
|
|
In winter, the wires contract and hence become tight. They expand during summer and become slack
|
|
0
|
430
|
August 22, 2016
|
|
Why do power transmission wires becomes tight in winter and slack in summer?
|
|
0
|
544
|
August 22, 2016
|