Online NAT IM Pre Medical Chemistry Test Preparation for Pakistani Students

NAT I Medical Chemistry

Sr. #	Questions	Answers Choice
1	When pressure is applied to the equilibrium system Ice Water Which of the following phenomenon will happen?	More ice will be formed Water will evaporate More water will be formed Equilibrium will not be formed
2	For the reaction 2A(g) + B(g) 3C(g) + D(g) two moles each of A and B were taken into a flask The following must always be true when the system attained equilibrium	[A] = [B] [A] < [B] [B] = [C] [A] > [B]
3	A chemical reaction A B is said to be in equilibrium when	Complete conversion of A to B has taken place Conversion of A to B is only 50% complete Only 10% conversion of A to B has taken place The rate of transformation of A to B is just equal to rate of transformation of B to A in the system
4	The equilibrium constant in a reversible chemical reaction at a given temperature	Depends on the initial concentration of the reactants Depends on the concentration of one of the products at equilibrium Does not depend on the initial concentrations of recatants Is not characteristic of the reaction
5	Which of the following will not change the concentration of ammonia in the equilibrium N₂(g) + 3H₂(g) 2NH₃(g): ΔH = -kj	Increase of pressure Increase of temperature Decrease of volume Addition of catalyst
6	In a reversible chemical reaction having two reactants in equilibrium if the concentration of the reactants are doubled then the equilibrium constant will	Also be doubled Be halved Becomes one fourth Remains the same
7	At 500 K the equilibrium constant for reaction cis-C₂H₂CI₂ trans-C₂H₂CI₂ is 0.6. At the same temperature the equilibrium constant for the reaction trans-C₂H₂CI₂ cis-C₂H₂CI₂ will be	0.60 1.67 0.66 2.6
8	The effect of increasing the pressure on the following equilibrium 2A + 3B \| \| 3A + 2B is	Forward reaction is favoured Backward reaction is favoured No effect None of the above

Download This Set