ENTRANCE TEST – 2012 Multiple Questions and Answers.




11.An organic compound has empirical formula C3H3O, if molar mass of compound is 110.15 gmol-1. The molecular formula of this organic compound is (A, of C=12, H=1.008 and O=16)
A. C6H6O2
B. C3H3O
C. C9H9O3
D. C6H6O3

12.When 8 grams (4 moles) of H2 react with 2 moles of O2, how many moles of water will be formed?
A. Five
B. Four
C. Six
D. Three

13.The number of molecules in 22.4 dm3 of H2 gas at 0 °C and 1 atm are
A. 60.2 x 1023
B. 6.02 x 1022
C. 6.02 x 1025
D. 6.02 x 1022

14.Correct order of boiling points of the given liquid is
A. H2O > HF > HCl > NH3
B. HF > H2O > HCl > NH3
C. H2O > HF > NH3 > HCl
D. HF > H2O > NH3 > HCl

15.The relative energies of 4s, 4p and 3d orbitals are in the order
A. 3d < 4p <4s
B. 4s < 3d < 4p
C. 4p < 4s < 3d
D. 4p < 3d < 4s

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