CBSE Term 1#!#100% Exam me Puche Jaane Wale Sawaal

(A) Efficiency of a reversible ingine is 100% (maximum) when the temperature of sink is -273^(@)C . (R) Efficiency of engine eta=(T_(2)-T_(1))/(T_(2))

The freezing point of one molal NaCl solution assuming NaCl to be 100% dissociated in water is (molal depression constant= 1.86)

Current through an AC series L-C-R circuit is 2 A if operated at resonance frequency , and 1 A if operated at 50% less than resonant frequency . The current (in A) if the frequency is 100% more than the resonant frequency , is

A hemispherical bowl is filled to the brim with a beverage. The contents of t he bowl are transferred into a cylindrical vessel whose radius is 50% more than its height. If the diameter is same for both the bowl and the cylinder, the volume of the beverage in the cylindrical vessel is 66 2/3% (b) 78 1/2% (c) 100% (d) More than 100% (i.e., some liquid will be left in the bowl)