ENTRANCE TEST – 2011 Multiple Questions and Answers.




11.Molarity is defined as the number of moles of any substance dissolved:
A. Per dm3 of water
B. In one gram of water
C. Per m3 of water
D. In 100 ml of water

12.In electrolytic cell, a salt bridge is used in order to:
A. Pass the electric current
B. Prevent the flow of ions
C. Mix solution of two half cells
D. Allow movement of ions b/w two half cells

13.In all oxidation reactions, atoms of an element in a chemical species lose electrons and increase their:
A. Oxidation states
B. Reductions
C. Electrode
D. Negative charges

14.In 'AgCl' solution. Some salt of NaCl is added, 'AgCl' will be precipitated due to:
A. Solubility
B. Electrolyte
C. Unsaturation effect
D. Common ion effect

15.‘Ka’ for an acid is higher, the stronger is the acid; relate the strength an acid with ‘pKa’
A. Higher pKa, weaker the acid
B. Lower pKa, stronger the acid
C. pKa has no relation with acid strength
D. Both A and B

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