Kelvin Planck’s law deals with___________________? - PakMcqs

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1. The first law of thermodynamics is the law of_________________?

   A. conservation of mass B. conservation of energy C. conservation of momentum D. conservation of heat E. conservation of temperature...

2. 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...

3. 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...

4. According to Clausis statement of second law of thermodynamics___________________?

   A. heat can’t be transferred from low temperature source to high temperature source B. heat can be transferred for low temperature to high temperature source by using refrigeration cycle. C. heat can be transferred from low temperature to high temperature source if COP of process is more than unity D. heat can’t be transferred from...

5. First law of thermodynamics___________________?

   A. enables to determine change in internal energy of the system B. does not help to predict whether the system will or not undergo a change C. does not enable to determine change in entropy D. provides relationship between heat, work and internal energy E. all of the above...

6. According to first law of thermodynamics_______________________?

   A. mass and energy are mutually convertible B. Carnot engine is most efficient C. heat and work are mutually convertible D. mass and light are mutually convertible E. heat flows from hot substance to cold substance...

7. According to Avogadro’s law, for a given pressure and temperature, each molecule of a gas_________________?

   A. occupies volume proportional to its molecular weight B. occupies volume proportional to its specific weight C. occupies volume inversely proportional to its molecular weight D. occupies volume inversely proportional to its specific weight E. occupies same volume...

8. Which law states that the specific heat of a gas remains constant at all temperatures and pressures______________________?

   A. Charles’ Law B. Joule’s Law C. Regnault’s Law D. Boyle’s Law E. there is no such law...

9. Which law states that the internal energy of a gas is a function of temperature__________________?

   A. Charles’ law B. Joule’s law C. Regnault’s law D. Boyle’s law E. there is no such law...

10. According to Gay-Lussac law for a perfect gas, the absolute pressure of given mass varies directly as____________________?

    A. temperature B. absolute C. absolute temperature, if volume is kept constant D. volume, if temperature is kept constant E. remains constant,if volume and temperature are kept constant...