54.
Assertion (A): Black hole is such a celestial existence which cannot be seen by telescope.
Reason (R): The gravitational field of black hole is much strong that even light does not escape from it.

56.
Assertion (A): Large cold storage plants use ammonia as refrigerant while domestic refrigerators use chlorofluorocarbons.
Reason (R): Ammonia can be liquefied at ambient temperatures at low pressures.

57.
When hot liquid is poured into a thick glass tumbler, it cracks because glass

58.
Maximum temperature inside pressure cooker depends on

59.
Why is it difficult to measure the coefficient of expansion of a liquid than solid?

Read More Section(Heat and Thermodynamics)

Each Section contains maximum 100 MCQs question on Heat and Thermodynamics. To get more questions visit other sections.