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In which of the following case entropy d...

In which of the following case entropy decreases:

A

Solid changing to liquid

B

Expansion of a gas

C

Crystals dissolve

D

Polymerisation

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The correct Answer is:
D
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MBD PUBLICATION-THERMODYNAMICS-Question Bank
  1. Heat given to a system under isochoric process is equal to:

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  2. The apparatus generally used for measuring heat changes is:

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  3. In which of the following case entropy decreases:

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  4. In which case, a spontaneous reaction is impossible at any temperature...

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  5. In which case, a spontaneous reaction is possible at any temperature:

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  6. In a reaction, triangleH and triangleS both are more than zero. In whi...

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  7. In which reaction triangleS is positvive:

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  8. Change in entropy for a reaction is given by:

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  9. The efficiency of heat engine is maximum when:

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  10. In a chemical reaction triangleH=150kJ and triangleS= 100JK^-1 at 300K...

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  11. A system is provided 50 joule of heat and work done on the system is 1...

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  12. Enthalpy of vaporisation for water is 186.5kJ mol^-1. The entropy chan...

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  13. A system is changed from state A to state B by one path and from B to ...

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  14. The cooling in refrigerator is due to:

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  15. If triangleG^@>0, for a reaction then:

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  16. Highest entropy at the same temperature is in:

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  17. During an adiabatic process:

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  18. The process in which pressure remains constant throughout a change is:

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  19. Which statements is/are correct:

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  20. In an irreversible process, the value of triangleSsystem+triangleSsurr...

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