Question # 1

A mercury in glass thermometer and thermocouple thermometer are both calibrated using the same fixed point of 0 oC and 100 oc when both temperature are used to measure the temperature of a body the temperature measured on both thermometers will be exactly the same

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For all temperatures between 0 oC and 100 o C only

Only are the fixed points

For all temperatures at all times

When converted to the Kelvin scale

The internal energy of an isolated system

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Is zero

Keeps on changing

Remains constant

Cannot be judged

Contrivances for converting heat into work are called.

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Heat pumps

Heat engines

IC engines

Jet engine

Which of the following has negative specific heat

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Ne

CO2

O2

Sturated vapours

In a vacuum flask the vacuum prevents heat transfer by

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Radiation only

Conduction only

Convection only

Conduction and convection

In the gas equation PV =nRT , V is the volume of.

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1 g of gas

1 L of gas

1 mol of gas

1 kg of gas

The practical efficiency of a heat engine is

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25% to 30.5 %

35% to 45%

30% to 45%

15% to 25%

Thermodynamics concern its primary with the

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Measurement of quantity of heat

Physical effects of temperature changes

Conversion of heat into other energy forms

Behavior of gases

Which statement about convection is correct.

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Brownian motion is a form of convection

Convection occurs only in gas

Convection results from a density change

Evaporation is a form of convection

On which parameter, the heat capacity of a material depends upon.

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Density of the material

Specific heat of the material

Temperature of the material

Structure of the material

Certain gas are called permanent gases because.

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They cannot be liquified

They are perfect gases

The critical temperatures are low

their boiling points are low

Law of increase of entropy is a result of

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First law of thermodynamics

Second law of thermodynamics

Third law of thermodynamics

Zeroth law of thermodynamics

What is a measure of the total energy of a thermodynamics system.

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Entropy

Enthalpy

Randomness

Chaos theory

Which of the following devoices are used for measuring temperature.

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Thermocouples

Thermistors

Thermometers

All of these

Which of the following is a thermodynamic potential

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Internal energy

Enthalpy

Gibb's free energy

All of these

In which thermodynamic process enthalpy of the system remains constant.

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Isenthalpic process

Isolated process

Isobaric process

Isochoric process

Most cooking involves

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Adiabatic process

Isothermal process

Isobaric process

Isochoric process

When a liquid is hated retaining its liquid sate then its molecules gain.

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K.E.

P.E

Heat energy

Chemical energy

The kinetic molecular model of matter describe matter an being made up of molecules in continuous.

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Vibratory motion

Random motion

rotatory motion

Linear motion

When ever a system is made to complete a cyclic process the work done during the complete cycle.

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Is zero

Is negative

Is positive

Depends upon the path followed

On which of the following the kinetic theory of gases is not applicable.

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Water vapour

Smoke particles

Bound particles

Free electrons

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