-
question_answer1)
When vapour condenses into liquid [CPMT 1990]
A)
It absorbs heat done
clear
B)
It liberates heat done
clear
C)
Its temperature increases done
clear
D)
Its temperature decreases done
clear
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question_answer2)
At NTP water boils at 100°C. Deep down the mine, water will boil at a temperature [CPMT 1996]
A)
100°C done
clear
B)
> 100°C done
clear
C)
< 100°C done
clear
D)
Will not boil at all done
clear
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question_answer3)
If specific heat of a substance is infinite, it means [AIIMS 1997]
A)
Heat is given out done
clear
B)
Heat is taken in done
clear
C)
\[Q=m.c.\Delta \theta \] Þ \[c=\frac{Q}{m.\Delta \theta }\]; when \[\Delta \theta =0\Rightarrow c=\infty \] done
clear
D)
All of the above done
clear
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question_answer4)
A gas in an airtight container is heated from 25°C to 90°C. The density of the gas will [BCECE 1997]
A)
Increase slightly done
clear
B)
Increase considerably done
clear
C)
Remain the same done
clear
D)
Decrease slightly done
clear
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question_answer5)
A quantity of heat required to change the unit mass of a solid substance, from solid state to liquid state, while the temperature remains constant, is known as [AIIMS 1998]
A)
Latent heat done
clear
B)
Sublimation done
clear
C)
Hoar frost done
clear
D)
Latent heat of fusion done
clear
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question_answer6)
The latent heat of vaporization of a substance is always [SCRA 1998]
A)
Greater than its latent heat of fusion done
clear
B)
Greater than its latent heat of sublimation done
clear
C)
Equal to its latent heat of sublimation done
clear
D)
Less than its latent heat of fusion done
clear
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question_answer7)
The factor not needed to calculate heat lost or gained when there is no change of state is [AFMC 1997; BHU 1997]
A)
Weight done
clear
B)
Specific heat done
clear
C)
Relative density done
clear
D)
Temperature change done
clear
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question_answer8)
540 g of ice at 0°C is mixed with 540 g of water at 80°C. The final temperature of the mixture is [AFMC 1994]
A)
0°C done
clear
B)
40°C done
clear
C)
80°C done
clear
D)
Less than 0°C done
clear
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question_answer9)
Water is used to cool radiators of engines, because [AFMC 2001]
A)
Of its lower density done
clear
B)
It is easily available done
clear
C)
It is cheap done
clear
D)
It has high specific heat done
clear
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question_answer10)
How much heat energy is gained when 5 kg of water at 20°C is brought to its boiling point (Specific heat of water = 4.2 kJ kg?1c?1) [BHU 2001]
A)
1680 kJ done
clear
B)
1700 kJ done
clear
C)
1720 kJ done
clear
D)
1740 kJ done
clear
View Solution play_arrow
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question_answer11)
Melting point of ice [CBSE PMT 1993]
A)
Increases with increasing pressure done
clear
B)
Decreases with increasing pressure done
clear
C)
Is independent of pressure done
clear
D)
Is proportional to pressure done
clear
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question_answer12)
Heat required to convert one gram of ice at 0°C into steam at 100°C is (given Lsteam = 536 cal/gm) [Pb. PMT 1990]
A)
100 calorie done
clear
B)
0.01 kilocalorie done
clear
C)
716 calorie done
clear
D)
1 kilocalorie done
clear
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question_answer13)
80 gm of water at 30°C are poured on a large block of ice at 0°C. The mass of ice that melts is [CBSE PMT 1989]
A)
30 gm done
clear
B)
80 gm done
clear
C)
1600 gm done
clear
D)
150 gm done
clear
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question_answer14)
The saturation vapour pressure of water at 100°C is [EAMCET 1997]
A)
739 mm of mercury done
clear
B)
750 mm of mercury done
clear
C)
760 mm of mercury done
clear
D)
712 mm of mercury done
clear
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question_answer15)
Two spheres made of same substance have diameters in the ratio 1 : 2. Their thermal capacities are in the ratio of [JIPMER 1999]
A)
1 : 2 done
clear
B)
1 : 8 done
clear
C)
1 : 4 done
clear
D)
2 : 1 done
clear
View Solution play_arrow
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question_answer16)
Work done in converting one gram of ice at ?10°C into steam at 100°C is [MP PET/PMT 1988; EAMCET (Med.) 1995; MP PMT 2003]
A)
3045 J done
clear
B)
6056 J done
clear
C)
721 J done
clear
D)
616 J done
clear
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question_answer17)
If mass energy equivalence is taken into account, when water is cooled to form ice, the mass of water should [AIEEE 2002]
A)
Increase done
clear
B)
Remain unchanged done
clear
C)
Decrease done
clear
D)
First increase then decrease done
clear
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question_answer18)
Compared to a burn due to water at 100°C, a burn due to steam at 100°C is [KCET 1999; UPSEAT 1999]
A)
More dangerous done
clear
B)
Less dangerous done
clear
C)
Equally dangerous done
clear
D)
None of these done
clear
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question_answer19)
50 gm of copper is heated to increase its temperature by 10°C. If the same quantity of heat is given to 10 gm of water, the rise in its temperature is (Specific heat of copper = 420 Joule-kg?1 °C?1) [EAMCET (Med.) 2000]
A)
5°C done
clear
B)
6°C done
clear
C)
7°C done
clear
D)
8°C done
clear
View Solution play_arrow
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question_answer20)
Two liquids A and B are at 32°C and 24°C. When mixed in equal masses the temperature of the mixture is found to be 28°C. Their specific heats are in the ratio of [DPMT 1996]
A)
3 : 2 done
clear
B)
2 : 3 done
clear
C)
1 : 1 done
clear
D)
4 : 3 done
clear
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question_answer21)
A beaker contains 200 gm of water. The heat capacity of the beaker is equal to that of 20 gm of water. The initial temperature of water in the beaker is 20°C. If 440 gm of hot water at 92°C is poured in it, the final temperature (neglecting radiation loss) will be nearest to [NSEP 1994]
A)
58°C done
clear
B)
68°C done
clear
C)
73°C done
clear
D)
78°C done
clear
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question_answer22)
Amount of heat required to raise the temperature of a body through 1K is called its [KCET 1996; MH CET 2001; AIEEE 2002]
A)
Water equivalent done
clear
B)
Thermal capacity done
clear
C)
Entropy done
clear
D)
Specific heat done
clear
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question_answer23)
A metallic ball and highly stretched spring are made of the same material and have the same mass. They are heated so that they melt, the latent heat required [AIIMS 2002]
A)
Are the same for both done
clear
B)
Is greater for the ball done
clear
C)
Is greater for the spring done
clear
D)
For the two may or may not be the same depending upon the metal done
clear
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question_answer24)
A liquid of mass m and specific heat c is heated to a temperature 2T. Another liquid of mass m/2 and specific heat 2c is heated to a temperature T. If these two liquids are mixed, the resulting temperature of the mixture is [EAMCET 1992]
A)
(2/3)T done
clear
B)
(8/5)T done
clear
C)
(3/5)T done
clear
D)
(3/2)T done
clear
View Solution play_arrow
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question_answer25)
Calorie is defined as the amount of heat required to raise temperature of 1g of water by 1°C and it is defined under which of the following conditions [IIT-JEE (Screening) 2005]
A)
From 14.5°C to 15.5°C at 760 mm of Hg done
clear
B)
From 98.5°C to 99.5°C at 760 mm of Hg done
clear
C)
From 13.5°C to 14.5°C at 76 mm of Hg done
clear
D)
From 3.5°C to 4.5°C at 76 mm of Hg done
clear
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question_answer26)
100 gm of ice at 0°C is mixed with 100 g of water at 100°C. What will be the final temperature of the mixture [SCRA 1996; AMU 1999]
A)
10°C done
clear
B)
20°C done
clear
C)
30°C done
clear
D)
40°C done
clear
View Solution play_arrow
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question_answer27)
At atmospheric pressure, the water boils at 100°C. If pressure is reduced, it will boil at [MP PMT 1984]
A)
Higher temperature done
clear
B)
Lower temperature done
clear
C)
At the same temperature done
clear
D)
At critical temperature done
clear
View Solution play_arrow
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question_answer28)
A closed bottle containing water at 30°C is carried to the moon in a space-ship. If it is placed on the surface of the moon, what will happen to the water as soon as the lid is opened [RPMT 2002]
A)
Water will boil done
clear
B)
Water will freeze done
clear
C)
Nothing will happen on it done
clear
D)
It will decompose into \[{{H}_{2}}\] and \[{{O}_{2}}\] done
clear
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question_answer29)
The thermal capacity of 40 gm of aluminium (specific heat = 0.2 cal/gm/°C) is [CBSE PMT 1990]
A)
40 cal/°C done
clear
B)
160 cal/°C done
clear
C)
200 cal/°C done
clear
D)
8 cal/°C done
clear
View Solution play_arrow
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question_answer30)
If temperature scale is changed from °C to °F, the numerical value of specific heat will [CPMT 1984]
A)
Increases done
clear
B)
Decreased done
clear
C)
Remains unchanged done
clear
D)
None of the above done
clear
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question_answer31)
By exerting a certain amount of pressure on an ice block, you [JIPMER 1997]
A)
Lower its melting point done
clear
B)
Make it melt at 0°C only done
clear
C)
Make it melt at a faster rate done
clear
D)
Raise its melting point done
clear
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question_answer32)
When we rub our palms they gets heated but to a maximum temperature because
A)
Heat is absorbed by our palm done
clear
B)
Heat is lost in the environment done
clear
C)
Produced of heat is stopped done
clear
D)
None of the above done
clear
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question_answer33)
A bullet moving with a uniform velocity v, stops suddenly after hitting the target and the whole mass melts be m, specific heat S, initial temperature 25°C, melting point 475°C and the latent heat L. Then v is given by [NCERT 1972]
A)
\[mL=mS\,(475-25)+\frac{1}{2}\cdot \frac{m{{v}^{2}}}{J}\] done
clear
B)
\[mS(475-25)+mL=\frac{m{{v}^{2}}}{2J}\] done
clear
C)
\[mS\,(475-25)+mL=\frac{m{{v}^{2}}}{J}\] done
clear
D)
\[mS\,(475-25)-mL=\frac{m{{v}^{2}}}{2J}\] done
clear
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question_answer34)
A water fall is 84 metres high. If half of the potential energy of the falling water gets converted to heat, the rise in temperature of water will be [JIPMER 2002]
A)
0.098°C done
clear
B)
0.98°C done
clear
C)
9.8°C done
clear
D)
0.0098°C done
clear
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question_answer35)
A body of mass 5 kg falls from a height of 30 metre. If its all mechanical energy is changed into heat, then heat produced will be [CPMT 1975]
A)
350 cal done
clear
B)
150 cal done
clear
C)
60 cal done
clear
D)
6 cal done
clear
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question_answer36)
In supplying 400 calories of heat to a system, the work done will be [MP PMT 1989]
A)
400 joules done
clear
B)
1672 joules done
clear
C)
1672 watts done
clear
D)
1672 ergs done
clear
View Solution play_arrow
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question_answer37)
0.93 watt-hour of energy is supplied to a block of ice weighing 10 gm. It is found that [NCERT 1973; DPMT 1999]
A)
Half of the block melts done
clear
B)
The entire block melts and the water attains a temperature of 4°C done
clear
C)
The entire block just melts done
clear
D)
The block remains unchanged done
clear
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question_answer38)
The weight of a person is 60 kg. If he gets 105 calories heat through food and the efficiency of his body is 28%, then upto how much height he can climb (approximately) [AFMC 1997]
A)
100 m done
clear
B)
200 m done
clear
C)
400 m done
clear
D)
1000 m done
clear
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question_answer39)
The temperature of Bhakhra dam water at the ground level with respect to the temperature at high level should be
A)
Greater done
clear
B)
Less done
clear
C)
Equal done
clear
D)
0°C done
clear
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question_answer40)
The height of a waterfall is 84 metre. Assuming that the entire kinetic energy of falling water is converted into heat, the rise in temperature of the water will be \[(g=9.8\,m/{{s}^{2}},\ J=4.2\,joule/cal)\] [MP PET 1994]
A)
0.196°C done
clear
B)
1.960°C done
clear
C)
0.96°C done
clear
D)
0.0196°C done
clear
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question_answer41)
Hailstone at 0°C falls from a height of 1 km on an insulating surface converting whole of its kinetic energy into heat. What part of it will melt \[(g=10\,m/{{s}^{2}})\] [MP PMT 1994]
A)
\[\frac{1}{33}\] done
clear
B)
\[\frac{1}{8}\] done
clear
C)
\[\frac{1}{33}\times {{10}^{-4}}\] done
clear
D)
All of it will melt done
clear
View Solution play_arrow
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question_answer42)
The SI unit of mechanical equivalent of heat is [MP PMT/PET 1998]
A)
Joule ´ Calorie done
clear
B)
Joule/Calorie done
clear
C)
Calorie ´ Erg done
clear
D)
Erg/Calorie done
clear
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question_answer43)
Of two masses of 5 kg each falling from height of 10 m, by which 2kg water is stirred. The rise in temperature of water will be [RPET 1997]
A)
2.6°C done
clear
B)
1.2°C done
clear
C)
0.32°C done
clear
D)
0.12°C done
clear
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question_answer44)
A lead ball moving with a velocity V strikes a wall and stops. If 50% of its energy is converted into heat, then what will be the increase in temperature (Specific heat of lead is S) [RPMT 1996]
A)
\[\frac{2{{V}^{2}}}{JS}\] done
clear
B)
\[\frac{{{V}^{2}}}{4JS}\] done
clear
C)
\[\frac{{{V}^{2}}}{J}\] done
clear
D)
\[\frac{{{V}^{2}}S}{2J}\] done
clear
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question_answer45)
The mechanical equivalent of heat J is [MP PET 2000]
A)
A constant done
clear
B)
A physical quantity done
clear
C)
A conversion factor done
clear
D)
None of the above done
clear
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question_answer46)
Water falls from a height of 210m. Assuming whole of energy due to fall is converted into heat the rise in temperature of water would be (J = 4.3 Joule/cal) [Pb. PMT 2002]
A)
42°C done
clear
B)
49°C done
clear
C)
0.49°C done
clear
D)
4.9°C done
clear
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question_answer47)
A block of mass 100 gm slides on a rough horizontal surface. If the speed of the block decreases from 10 m/s to 5 m/s, the thermal energy developed in the process is [UPSEAT 2002]
A)
3.75 J done
clear
B)
37.5 J done
clear
C)
0.375 J done
clear
D)
0.75 J done
clear
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question_answer48)
4200 J of work is required for [MP PMT 1986]
A)
Increasing the temperature of 10 gm of water through 10°C done
clear
B)
Increasing the temperature of 100 gm of water through 10°C done
clear
C)
Increasing the temperature of 1 kg of water through 10°C done
clear
D)
Increasing the temperature of 10 kg of water through 10°C done
clear
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question_answer49)
At 100°C, the substance that causes the most severe burn, is [KCET 1999; UPSEAT 1999]
A)
Oil done
clear
B)
Steam done
clear
C)
Water done
clear
D)
Hot air done
clear
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question_answer50)
In a water-fall the water falls from a height of 100 m. If the entire K.E. of water is converted into heat, the rise in temperature of water will be [MP PMT 2001]
A)
0.23°C done
clear
B)
0.46°C done
clear
C)
2.3°C done
clear
D)
0.023°C done
clear
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question_answer51)
A lead bullet of 10 g travelling at 300 m/s strikes against a block of wood and comes to rest. Assuming 50% of heat is absorbed by the bullet, the increase in its temperature is (Specific heat of lead = 150J/kg, K) [EAMCET 2001]
A)
100°C done
clear
B)
125°C done
clear
C)
150°C done
clear
D)
200°C done
clear
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question_answer52)
The temperature at which the vapour pressure of a liquid becomes equals to the external (atmospheric) pressure is its [Kerala (Engg.) 2001]
A)
Melting point done
clear
B)
Sublimation point done
clear
C)
Critical temperature done
clear
D)
Boiling point done
clear
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question_answer53)
When the pressure on water is increased the boiling temperature of water as compared to 100°C will be [RPET 1999]
A)
Lower done
clear
B)
The same done
clear
C)
Higher done
clear
D)
On the critical temperature done
clear
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question_answer54)
Calorimeters are made of which of the following [AFMC 2000]
A)
Glass done
clear
B)
Metal done
clear
C)
Wood done
clear
D)
Either (a) or (b) done
clear
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question_answer55)
Triple point of water is [CPMT 2002]
A)
273.16°F done
clear
B)
273.16 K done
clear
C)
273.16°C done
clear
D)
273.16 R done
clear
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question_answer56)
A liquid boils when its vapour pressure equals [MP PET 2002]
A)
The atmospheric pressure done
clear
B)
Pressure of 76.0 cm column of mercury done
clear
C)
The critical pressure done
clear
D)
The dew point of the surroundings done
clear
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question_answer57)
The amount of work, which can be obtained by supplying 200 cal of heat, is [Pb. PET 2001, 03; BHU 2004]
A)
840 dyne done
clear
B)
840 W done
clear
C)
840 erg done
clear
D)
840 J done
clear
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question_answer58)
How many grams of a liquid of specific heat 0.2 at a temperature 40°C must be mixed with 100 gm of a liquid of specific heat of 0.5 at a temperature 20°C, so that the final temperature of the mixture becomes 32°C [Pb. PET 1999]
A)
175 gm done
clear
B)
300 g done
clear
C)
295 gm done
clear
D)
375 g done
clear
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question_answer59)
1 g of a steam at 100°C melt how much ice at 0°C? (Latent heat of ice = 80 cal/gm and latent heat of steam = 540 cal/gm) [Pb. PET 2000]
A)
1 gm done
clear
B)
2 gm done
clear
C)
4 gm done
clear
D)
8 gm done
clear
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question_answer60)
5 g of ice at 0°C is dropped in a beaker containing 20 g of water at 40°C. The final temperature will be [Pb. PET 2003]
A)
32°C done
clear
B)
16°C done
clear
C)
8°C done
clear
D)
24°C done
clear
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question_answer61)
One kilogram of ice at 0°C is mixed with one kilogram of water at 80°C. The final temperature of the mixture is (Take : specific heat of water\[=4200\,J\,k{{g}^{-1}}\,{{K}^{-1}}\], latent heat of ice \[=336\,kJ\,k{{g}^{-1}})\] [KCET 2002]
A)
40°C done
clear
B)
60°C done
clear
C)
0°C done
clear
D)
50°C done
clear
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question_answer62)
During constant temperature, we feel colder on a day when the relative humidity will be [Pb. PMT 1996]
A)
25% done
clear
B)
12.5% done
clear
C)
50% done
clear
D)
75% done
clear
View Solution play_arrow
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question_answer63)
Which of the following is the unit of specific heat [MH CET 2004]
A)
\[J\,kg\,{}^\circ {{C}^{-1}}\] done
clear
B)
\[J/kg\,{}^\circ C\] done
clear
C)
\[kg\,{}^\circ C/J\] done
clear
D)
\[J/kg\,{}^\circ {{C}^{-2}}\] done
clear
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question_answer64)
50 gm of ice at 0°C is mixed with 50 gm of water at 80°C, final temperature of mixture will be [DCE 2002]
A)
0°C done
clear
B)
40°C done
clear
C)
40°C done
clear
D)
4°C done
clear
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question_answer65)
The freezing point of the liquid decreases when pressure is increased, if the liquid [DCE 1995]
A)
Expands while freezing done
clear
B)
Contracts while freezing done
clear
C)
Does not change in volume while freezing done
clear
D)
None of these done
clear
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question_answer66)
The relative humidity on a day, when partial pressure of water vapour is \[0.012\times {{10}^{5}}\,Pa\] at 12°C is (take vapour pressure of water at this temperature as \[0.016\times {{10}^{5}}\,Pa\]) [AIIMS 1998]
A)
70% done
clear
B)
40% done
clear
C)
75% done
clear
D)
25% done
clear
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question_answer67)
A hammer of mass 1kg having speed of 50 m/s, hit a iron nail of mass 200 gm. If specific heat of iron is 0.105 cal/gm°C and half the energy is converted into heat, the raise in temperature of nail is [RPMT 1995]
A)
7.1°C done
clear
B)
9.2°C done
clear
C)
10.5°C done
clear
D)
12.1°C done
clear
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question_answer68)
Latent heat of 1gm of steam is 536 cal/gm, then its value in joule/kg is [RPMT 1999]
A)
\[2.25\times {{10}^{6}}\] done
clear
B)
\[2.25\times {{10}^{3}}\] done
clear
C)
2.25 done
clear
D)
None done
clear
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question_answer69)
Which of the following has maximum specific heat [RPMT 1999]
A)
Water done
clear
B)
Alcohol done
clear
C)
Glycerine done
clear
D)
Oil done
clear
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question_answer70)
50 gm ice at 0°C in insulator vessel, 50g water of 100°C is mixed in it, then final temperature of the mixture is (neglect the heat loss) [RPMT 2001]
A)
10°C done
clear
B)
\[0{}^\circ <<{{T}_{m}}<20{}^\circ C\] done
clear
C)
20°C done
clear
D)
Above 20°C done
clear
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question_answer71)
A stationary object at 4°C and weighing 3.5 kg falls from a height of 2000 m on a snow mountain at 0°C. If the temperature of the object just before hitting the snow is 0°C and the object comes to rest immediately \[(g=10\,m/{{s}^{2}})\] and (latent heat of ice\[=3.5\times {{10}^{5}}\,joule/\sec \]), then the object will melt [BHU 2001]
A)
2 kg of ice done
clear
B)
200 gm of ice done
clear
C)
20 gm ice done
clear
D)
2 gm of ice done
clear
View Solution play_arrow
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question_answer72)
300 gm of water at 25°C is added to 100 gm of ice at 0°C. The final temperature of the mixture is [MP PET 2004]
A)
\[-\frac{5}{3}{}^\circ C\] done
clear
B)
\[-\frac{5}{2}{}^\circ C\] done
clear
C)
? 5°C done
clear
D)
0°C done
clear
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question_answer73)
Calculate the amount of heat (in calories) required to convert 5 gm of ice at 0°C to steam at 100° [DPMT 2005]
A)
3100 done
clear
B)
3200 done
clear
C)
3600 done
clear
D)
4200 done
clear
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question_answer74)
2gm of steam condenses when passed through 40gm of water initially at 25°C. The condensation of steam raises the temperature of water to 54.3°C. What is the latent heat of steam [J & K CET 2005]
A)
540 cal/g done
clear
B)
536 cal/g done
clear
C)
270 cal/g done
clear
D)
480 cal/g done
clear
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question_answer75)
10 gm of ice at 0°C is mixed with 100 gm of water at 50°C. What is the resultant temperature of mixture [AFMC 2005]
A)
31.2°C done
clear
B)
32.8°C done
clear
C)
36.7°C done
clear
D)
38.2°C done
clear
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question_answer76)
Three liquids with masses \[{{m}_{1}},\,{{m}_{2}},\,{{m}_{3}}\] are thoroughly mixed. If their specific heats are \[{{c}_{1}},\,{{c}_{2}},\,{{c}_{3}}\] and their temperatures \[{{T}_{1}},\,{{T}_{2}},\,{{T}_{3}}\] respectively, then the temperature of the mixture is
A)
\[\frac{{{c}_{1}}{{T}_{1}}+{{c}_{2}}{{T}_{2}}+{{c}_{3}}{{T}_{3}}}{{{m}_{1}}{{c}_{1}}+{{m}_{2}}{{c}_{2}}+{{m}_{3}}{{c}_{3}}}\] done
clear
B)
\[\frac{{{m}_{1}}{{c}_{1}}{{T}_{1}}+{{m}_{2}}{{c}_{2}}{{T}_{2}}+{{m}_{3}}{{c}_{3}}{{T}_{3}}}{{{m}_{1}}{{c}_{1}}+{{m}_{2}}{{c}_{2}}+{{m}_{3}}{{c}_{3}}}\] done
clear
C)
\[\frac{{{m}_{1}}{{c}_{1}}{{T}_{1}}+{{m}_{2}}{{c}_{2}}{{T}_{2}}+{{m}_{3}}{{c}_{3}}{{T}_{3}}}{{{m}_{1}}{{T}_{1}}+{{m}_{2}}{{T}_{2}}+{{m}_{3}}{{T}_{3}}}\] done
clear
D)
\[\frac{{{m}_{1}}{{T}_{1}}+{{m}_{2}}{{T}_{2}}+{{m}_{3}}{{T}_{3}}}{{{c}_{1}}{{T}_{1}}+{{c}_{2}}{{T}_{2}}+{{c}_{3}}{{T}_{3}}}\] done
clear
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question_answer77)
The point on the pressure temperature phase diagram where all the phases co-exist is called [MH CET 2005]
A)
Sublimation done
clear
B)
Fusion point done
clear
C)
Triple point done
clear
D)
Vaporisation point done
clear
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question_answer78)
Boiling water is changing into steam. At this stage the specific heat of water is [UPSEAT 1998]
A)
< 1 done
clear
B)
¥ done
clear
C)
1 done
clear
D)
0 done
clear
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question_answer79)
A vessel contains 110 g of water. The heat capacity of the vessel is equal to 10 g of water. The initial temperature of water in vessel is 10°C. If 220 g of hot water at 70°C is poured in the vessel, the final temperature neglecting radiation loss, will be [UPSEAT 2000]
A)
70°C done
clear
B)
80°C done
clear
C)
60°C done
clear
D)
50°C done
clear
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question_answer80)
The thermal capacity of a body is 80 cal, then its water equivalent is [UPSEAT 2001]
A)
80 cal / gm done
clear
B)
8 gm done
clear
C)
80 gm done
clear
D)
80 kg done
clear
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question_answer81)
A liquid of mass M and specific heat S is at a temperature 2t. If another liquid of thermal capacity 1.5 times, at a temperature of \[\frac{t}{3}\] is added to it, the resultant temperature will be [EAMCET (Engg.) 1999]
A)
\[\frac{4}{3}t\] done
clear
B)
t done
clear
C)
\[\frac{t}{2}\] done
clear
D)
\[\frac{2}{3}t\] done
clear
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question_answer82)
Dry ice is [CPMT 2000]
A)
Ice cube done
clear
B)
Sodium chloride done
clear
C)
Liquid nitrogen done
clear
D)
Solid carbon dioxide done
clear
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