41. To keep drinks at the same temperature for quite sometime, the walls of thermos bottle are coated with
42. What is the temperature at which the fluid starts boiling at atmospheric pressure?
43. . . . . . . . . Celsius = 167 Fehreheit.
44. At what temperature will the water density be maximum?
45. Assertion(A): The boiling point of water decreases as the altitude increases.
Reason (R): The atmospheric pressure increases with altitude.
Reason (R): The atmospheric pressure increases with altitude.
46. Assertion (A): With the increase of temperature, the viscosity of glycerin increases.
Reason (R): Rise of temperature increases kinetic energy of molecules.
Reason (R): Rise of temperature increases kinetic energy of molecules.
47. The total amount of radiant energy emitted per unit area of a surface per second is called
48. Expansion during heating
49. A small gap is left at the joints of rails in a railway track to
50. Which of the following has got more heat capacity?
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