Q241
Open questionTo keep drinks at the same temperature for quite sometime, the walls of thermos bottle are coated with
Select an option to see the answer and solution.
Physics GK · all questionsHeat and Thermodynamics
Heat and Thermodynamics
practice.
Practice every MCQ with options. Use Show answers when you want the correct option and solution.
308
Questions
13/16
Page
Pick an option on a question to see the right answer and solution.
Q242
Open questionWhat is the temperature at which the fluid starts boiling at atmospheric pressure?
Select an option to see the answer and solution.
Q243
Open question. . . . . . . . Celsius = 167 Fehreheit.
Select an option to see the answer and solution.
Q244
Open questionAt what temperature will the water density be maximum?
Select an option to see the answer and solution.
Q245
Open questionAssertion(A): The boiling point of water decreases as the altitude increases.
Reason (R): The atmospheric pressure increases with altitude.
Reason (R): The atmospheric pressure increases with altitude.
Select an option to see the answer and solution.
Q246
Open questionAssertion (A): With the increase of temperature, the viscosity of glycerin increases.
Reason (R): Rise of temperature increases kinetic energy of molecules.
Reason (R): Rise of temperature increases kinetic energy of molecules.
Select an option to see the answer and solution.
Q247
Open questionThe total amount of radiant energy emitted per unit area of a surface per second is called
Select an option to see the answer and solution.
Q248
Open questionExpansion during heating
Select an option to see the answer and solution.
Q249
Open questionA small gap is left at the joints of rails in a railway track to
Select an option to see the answer and solution.
Q250
Open questionWhich of the following has got more heat capacity?
Select an option to see the answer and solution.
Q251
Open questionWhen pressure is increased, the melting point of ice
Select an option to see the answer and solution.
Q252
Open questionThermal capacity of a body depends on the
Select an option to see the answer and solution.
Q253
Open questionWhich of the following method the molecule of a fluid transmit the heat from one place to another?
Select an option to see the answer and solution.
Q254
Open questionWhich of the following statement(s) about latent heat for a given substance is/are correct?
1. It is fixed at a given temperature.
2. It depends upon the temperature and volume.
3. It is independent of temperature and volume.
4. It depends on the temperature but independent of volume.
1. It is fixed at a given temperature.
2. It depends upon the temperature and volume.
3. It is independent of temperature and volume.
4. It depends on the temperature but independent of volume.
Select an option to see the answer and solution.
Q255
Open questionSteam at 100°C causes more severe bums than the water at the same temperature, because
Select an option to see the answer and solution.
Q256
Open questionWhich thermodynamics law defines entropy?
Select an option to see the answer and solution.
Q257
Open questionGas thermometers are more sensitive than the liquid thermometers because the gases
Select an option to see the answer and solution.
Q258
Open questionWhich of these is a very good conductor of electricity-
Select an option to see the answer and solution.
Q259
Open questionIf x the temperature of a system in Kelvin and y is the temperature of the system in °C, then the correct relation between them is
Select an option to see the answer and solution.
Q260
Open questionIn a diesel engine, the high temperature needed to ignite the fuel as achieved by
Select an option to see the answer and solution.