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AIPMT 2011 Chemistry

Q. 1. The total number of atomic orbitals in fourth energy level of an atom is

(1) 4                                                            (2) 8

(3) 16                                                          (4) 32  

Sol:

Number of atomic orbitals in an orbit

Answer : (3)

Q. 2. The electrode potentials for are +0.15 V and +0.50 V respectively. The value of .

(1) 0.150 V                                            (2) 0.500 V

(3) 0.325 V                                            (4) 0.650 V

sol.

Answer : (3)

Q. 3. Mole fraction of the solute in a 1.00 molal aqueous solution is

(1) 1.7700                                              (2) 0.1770

(3) 0.0177                                              (4) 0.0344

Sol.  

 Mole fraction of solute = 1/56.55 = 0.0177

Answer : (3)

Q. 4. By what factors does the average velocity of a gaseous molecule increase when the temperature (in Kelvin) is doubled?

(1) 1.4                                                   (2) 2.0

(3) 2.8                                                   (4) 4.0

Sol.  

Answer : (1)

Q. 5. A buffer solution is prepared in which the concentration of NH3 is 0.30 M and the concentration of is 0.20 M. If the equilibrium constant, Kb for NH3 equals , what is the pH of this solution?

(1) 8.73                                                 (2) 9.08

(3) 9.43                                                 (4) 11.72

Sol.  

Answer : (3)

AIPMT 2011 Solved Papers
	Biology		Physics		Chemistry