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Physics
Multiple Choice Question Based on Passage Internal energy Every system (solid, liquid or gas) possesses a certain amount of energy. This energy is called the internal energy and is usually denoted by the symbol U. The internal energy of solid, liquid or gas consists of two parts : (i) kinetic energy due to the motion (translational, rotational and vibrational) of the molecules, and (ii) potential energy due to the configuration (seperation) of the molecules. The internal energy of a homogeneous system depends on its thermodynamic state, i.e. on its thermodynamic coordinates P, V and T. Each definite state of the system possesses a definite quantity of internal energy. A change in the internal energy can occur only if a transfer of energy between the system and surroundings is permitted. This can take place if (i) some work is performed on or by the system, and (ii) some heat is absorbed or given out by the system. In a given process on an ideal gas. dW = 0 and dQ > 0. Then (a) the temperature of the gas will decrease. (b) the temperature of the gas will increase. (c) the internal energy of the gas will decrease. (d) the internal energy of the gas will increase.
Chemistry
True or False : The reaction of vinyl chloride with hydrogen iodide to give 1-chloro-1-iodoethane is an example of anti-Markovnikov' s rule.
Mathematics
Multiple Choice Question Let f(x) = (x - 2) (x - 3)(x - 4) (x - 5) (x - 6) then (a) f'(x) = 0 has five real roots (b) four roots of f'(x) = 0 lie in (2, 3) (3, 4) (4, 5) (5, 6) (c) the equation f'(x) has only three roots (d) four roots of f'(x) = 0 lie in (1, 2) (2, 3) (3, 4) (4, 5)