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In an experiment, the specific heats of some inert gases (at ordinary temperature) one measured to be as follows:
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1
|
761
|
August 22, 2016
|
|
The efficiency of heat engine can't be 100%. Explain why?
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0
|
1823
|
August 22, 2016
|
|
What is the relative humidity on a day in July in Mumbai
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1
|
948
|
August 22, 2016
|
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Estimate the temperature of the surface of' the sun from the following data :
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1
|
1354
|
August 22, 2016
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Give a brief account of Joule's experiment
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0
|
1707
|
August 22, 2016
|
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Light, from the moon, is found at the peak (or wavelength of maximum emission) at A, = 14 p m. Given that the Wen's constant 'b' equals 2.898 x ${{10}^{-3}}$ mK, estimate the temperature of the moon
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0
|
787
|
August 22, 2016
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Find the value of ${{C}_{v}}$ and ${{C}_{p}}$ for nitrogen
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0
|
587
|
August 22, 2016
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A 'thermacole' ice box is cheap and efficient method for storing small quantities of cooked food in summer in particular
|
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1
|
1355
|
August 22, 2016
|
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In an experiment on the specific heat of a metal, a 0.20 kg block of the metal at 150°C is dropped in cu calorimeter of water equivalent0.025 kg containing 150 cm3 of water at 27°C The final temperature is 40°C. Compute the specific heat of the metal
|
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0
|
2415
|
August 22, 2016
|
|
A 10 kW drilling machine is used to drill a bore in a small aluminium block of mass 8.0 kg
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|
1
|
1980
|
August 22, 2016
|
|
The coefficient of volume expansion of glycerine is 49 x ${{10}^{-5}}$ ° ${{C}^{-1}}$. What is the fractional change in its density for a 30°C rise in temperature?
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0
|
2764
|
August 22, 2016
|
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A brass wire 1.8 m long at 27°C is held tight with little tension between two rigid supports
|
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1
|
2128
|
August 22, 2016
|
|
A large steel wheel is to be fitted on a shaft of the same material
|
|
1
|
1993
|
August 22, 2016
|
|
The triple points of neon and carbon dioxide are 24.57 K and 216.55 K respectively. Express these temperature on the Celsius and fahrenheit scales,
|
|
0
|
2614
|
August 22, 2016
|
|
Why does the temperature remain constant, when solid melts or liquid boils?
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|
0
|
568
|
August 22, 2016
|
|
A gas has two specific heats, whereas a liquid and solid have one. Why ? Or Why a gas has principle specific heat capacities?
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0
|
9975
|
August 22, 2016
|
|
Calculate the power developed by a person while eating 100 g of ice per minute
|
|
0
|
5093
|
August 22, 2016
|
|
Find the increase in energy per atom of aluminium when temperature of a piece of aluminium increases by 1°C
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|
0
|
608
|
August 22, 2016
|
|
Water is used as an effective coolant Why?
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|
0
|
2072
|
August 22, 2016
|
|
An alloy consist of n metals of masses
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|
1
|
465
|
August 22, 2016
|
|
What is water equivalent?
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|
0
|
2162
|
August 22, 2016
|
|
Heating system which are based upon circulation of steam are more efficient in warming a building that these based on circulation of water. Why?
|
|
0
|
934
|
August 22, 2016
|
|
Why is the specific heat at constant pressure greater than specific heat at constant volume?
|
|
0
|
2206
|
August 22, 2016
|
|
Why do pendulum clocks move slow in summer and fast in water?
|
|
0
|
6422
|
August 22, 2016
|
|
Why a thick glass tumbler cracks when boiling water is poured in it?
|
|
0
|
4401
|
August 22, 2016
|
|
The difference between length of a certain brass rod and that of a steel rod is to be constant at all temperature. Is this possible?
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|
0
|
2452
|
August 22, 2016
|
|
The melting point of ice decreases on increasing the pressure while the melting point of wax increase. Why?
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|
0
|
1804
|
August 22, 2016
|
|
Two identical rectangular strips one of copper and the other of steel are rivetted to form a bimetallic strip. What will happen on heating?
|
|
0
|
2968
|
August 22, 2016
|
|
How does the density of liquid vary with temperature?
|
|
1
|
1319
|
August 22, 2016
|
|
The triple point of water is a standard fixed point in modem thermometry. Why?
|
|
0
|
476
|
August 22, 2016
|