Online NAT IM Pre Medical Chemistry Test Preparation for Pakistani Students

NAT I Medical Chemistry

Sr. #	Questions	Answers Choice
1	Number of elements presents in the fifth period of periodic table is	8 10 18 32
2	Which of the following statements is most appropriate about effective nuclear charge? It depends upon	The shielding constant The atomic number The charge on the nucleus Both the nuclear charge and the shielding constant
3	Which of the following represents elements in order of increasing atomic size?	I,Br,CI Na,Mg,C C,N,O Li,Na,K
4	Which of the following statement regarding catalyst is not true?	A catalyst remains unchanged in composition and quantity at the end of the reaction A catalyst can initiate a reaction A catalyst dose not alter the equilibrium in a reversible reaction Catalysts are sometimes very specific in respect of reaction
5	A zero order reaction is one whose rate is independent of	Temperature of the reaction The concentration of the reactants The concentration of the products The material of the vessel in which the reaction is carried out
6	The dimension of rate constant of a second order reaction involves	Neither time nor concentration Only time Time and concentration Time and square of concentration
7	The rate at which a substance reacts depends on its	Atomic weight Equivalent weight Molecular weight Active mass
8	The rate of a reaction that does not involve gases does not depend upon	Pressure Temperature Concentration Catalyst