Which of the following have the highest thermal conductivities?  a. liquids  b. gases  c. metals  d. solids other than metals

Which of the following have the highest thermal conductivities?
 a. liquids
 b. gases
 c. metals
 d. solids other than metals
by

1 Answer

Answer :

metals
by

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Description : Solids and liquids have  (a) one value of specific heat (ft) two values of specific heat  (c) three values of specific heat  (d) no value of specific heat  (e) one value under some conditions and two values under other conditions.

Last Answer : Answer : a

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Last Answer : A. Zeroth law of thermodynamics

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Last Answer : Compressibility factor

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The value of the product of molecular weight and the gas characteristic constant for all the gases in S.I. units is  (a) 29.27 J/kmol°K  (b) 83.14J/kmol°K  (c) 848J/kmol°K  (d) All J/kmol °K  (e) 735 J/kmol °K.

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Last Answer : Answer : b

The value of the product of molecular weight and the gas characteristic constant for all the gases in M.K.S. unit is  (a) 29.27 kgfm/mol°K  (b) 8314kgfm/mol°K  (c) 848kgfm/mol°K  (d) 427kgfm/mol°K  (e) 735 kgfm/mol°K.

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Last Answer : Answer : c

Which of the following parameters is constant for a mole for most of the gases at a given temperature and pressure  (a) enthalpy  (b) volume  (c) mass  (d) entropy  (e) specific volume.

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The statement that molecular weights of all gases occupy the same volume is known as  (a) Avogadro’s hypothesis  (b) Dalton’s law  (c) Gas law  (d) Law of thermodynamics  (e) Joule’s law.

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According to Avogadro’s Hypothesis  (a) the molecular weights of all the perfect gases occupy the same volume under same conditions of pressure and temperature  (b) the sum of partial pressure of mixture of two gases is sum of the two  (c) product of the gas constant and the molecular weight of an ideal gas is constant  (d) gases have two values of specific heat  (e) all systems can be regarded as closed systems.

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Last Answer : Answer : a

According to which law, all perfect gases change in volume by l/273th of their original volume at 0°C for every 1°C change in temperature when pressure remains constant  (a) Joule’s law  (b) Boyle’s law  (c) Regnault’s law  (d) Gay-Lussac law  (e) Charles’ law.

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Last Answer : Answer : e

Gases have  (a) only one value of specific heat  (b) two values of specific heat  (c) three values of specific heat  (d) no value of specific heat  (e) under some conditions one value and sometimes two values of specific heat.

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Last Answer : Answer : b

The same volume of all gases would represent their  (a) densities  (b) specific weights  (c) molecular weights  (d) gas characteristic constants  (e) specific gravities.

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Last Answer : Answer : c

Boyle’s law i.e. pV = constant is applicable to gases under  (a) all ranges of pressures  (b) only small range of pressures  (c) high range of pressures  (d) steady change of pressures  (e) atmospheric conditions.

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Last Answer : Answer : b

The behaviour of gases can be fully determined by  (a) 1 law  (b) 2 laws  (c) 3 laws  (d) 4 laws

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Last Answer : Answer : d

Kinetic theory of gases assumes that the collisions between the molecules are  (a) perfectly elastic  (b) perfectly inelastic  (c) partly elastic  (d) partly inelastic  (e) partly elastic and partly inelastic.

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Last Answer : Answer : a

According to kinetic theory of gases, the absolute zero temperature is attained when  (a) volume of the gas is zero  (b) pressure of the gas is zero  (c) kinetic energy of the molecules is zero  (d) specific heat of gas is zero  (e) mass is zero.

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Last Answer : Answer : c

According to Dalton’s law, the total pres sure of the mixture of gases is equal to  (a) greater of the partial pressures of all  (b) average of the partial pressures of all  (c) sum of the partial pressures of all  (d) sum of the partial pressures of all divided by average molecular weight  (e) atmospheric pressure.

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Last Answer : Answer : c

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