4. The ionization potential of the atom is not affected by
5. Calculated bond order of super oxide ion is
6. The geometrical shape of the molecule sulphur tetra fluoride is
7. The percentage p-character in the orbitals forming P-P bonds in phosphorus molecule
8. The electronic configuration of an element is 1s2 2s2 2p63s23p63d54s This represents its
9. Which of the following element has highest value of ionization potential ?
10. The first experimental evidence of de-Broglie’s hypothesis came from the experiments of
11. Human body is an example of
12. If a refrigerator s door is kept open then
13. The rate of reaction does not depend on
14. The efficiency of a heat engine is maximum when
15. A spontaneous change is one in which the system suffers
16. The unit and value of rate constant and that of rate of reaction are same for
17. The activation energy of a reaction is zero. But the rate constant of reaction
18. If for a first order reaction, the values of A and Ea are 4 x 1013secf1 and 98.6 KJ/mol respectively, then at what temperature will its half life period be 10 minutes ?
19. Which among the following compound is a state function ?
20. The pH of a solution is 5.0. Its hydrogen ion concentration is decreased hundred times. The solution then will be
21. An Sn2 reaction at an asymmetric carbon of a compound always gives
22. The reaction of propene with HOCI proceeds via the addition of
23. The two forms of D-glucopyranose obtained from the solution of D-glucose are called
24. Compounds containing chromophoric groups are called
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