|
In what ways are the gas thermometers superior to mercury thermometers?
|
|
0
|
685
|
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
|
1939
|
August 22, 2016
|
|
Should a thermometer bulb have large heat capacity or small heat capacity ? Explain
|
|
0
|
2755
|
August 22, 2016
|
|
Distinguish clearly between tqgnperature and heat
|
|
0
|
428
|
August 22, 2016
|
|
What is molar heat capacity?
|
|
0
|
687
|
August 22, 2016
|
|
What is absolute or Kelvin scale in modem thermometry
|
|
0
|
404
|
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
|
2359
|
August 22, 2016
|
|
Steam causes more severe bums than boiling water though both have same temperature. Why?
|
|
0
|
590
|
August 22, 2016
|
|
What is latent heat energy?
|
|
0
|
1077
|
August 22, 2016
|
|
What is mechanical equivalent?
|
|
0
|
458
|
August 22, 2016
|
|
Hot water bottles are used for fermentation. Why?
|
|
0
|
1080
|
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
|
1381
|
August 22, 2016
|
|
Is the specific heat of sand greater than that of water?
|
|
0
|
560
|
August 22, 2016
|
|
Do water and ice have the same specific heats?
|
|
0
|
611
|
August 22, 2016
|
|
Why does a gas possess two principal specific heats?
|
|
0
|
529
|
August 22, 2016
|
|
State Dulong and Petit's law?
|
|
0
|
1649
|
August 22, 2016
|
|
What is specific heat capacity?
|
|
0
|
1077
|
August 22, 2016
|
|
What is the thermal capacity of a body?
|
|
0
|
753
|
August 22, 2016
|
|
Tea gets cooled when sugar is added to it Why?
|
|
0
|
2494
|
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
|
2111
|
August 22, 2016
|
|
Brass disc is fitted inside a hole in a steel plate. How can be loosen the brass disc?
|
|
0
|
1064
|
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
|
427
|
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
|
527
|
August 22, 2016
|
|
Does a liquid possess coefficient of linear or superficial expansion?
|
|
0
|
578
|
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
|
2021
|
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
|
385
|
August 22, 2016
|
|
Why do cracked rocks break during winter
|
|
0
|
862
|
August 22, 2016
|
|
In winter, the wires contract and hence become tight. They expand during summer and become slack
|
|
0
|
423
|
August 22, 2016
|
|
Why do power transmission wires becomes tight in winter and slack in summer?
|
|
0
|
542
|
August 22, 2016
|