ENTRANCE TEST – 2010 Multiple Questions and Answers.




46.The ionization energy of hydrogen atom is
A. Zero
B. 13.13 kJmol
C. 1313.31 kJmol-1
D. 1313.31 k2 Jmol

47.Which quantum number helps to study the orientation of an orbital in space?
A. Principal Quantum Number
B. Spin Quantum Number
C. Magnetic Quantum Number
D. Azimuthal Quantum Number

48.The inter-ionic distance in a crystal lattice of KCl is
A. 314 pm
B. 181 pm
C. 95 pm
D. 300 pm

49. The number of bonds in nitrogen molecule is
A. One σ and two π
B. One σ and one π
C. Three σ only
D. Two σ and one π

50. Which one of the following molecules has zero dipole moment?
A. NH3
B. CHCl3
C. BF3
D. H2O

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