Chapter 10 Test 1

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Chapter 10 Chemistry Book II
Test 1
read questions carefully and answer them.

should be the products when reactants are alcohol & thionyl chloride in the presence of pyridine?

      a) RCl+S+HCl                b) RCl+SO2+HCl

      c) RCl+SO2+H2O            d) RCl+S+H2O

2. Which C-X bon has the highest bond energy

per mole?

a) C-F                           b) C-Cl

c) C-Br                          d) C-I

3. Which alkyl halides has the highest reactivity , for a particular alkyl group?

a) R-F                           b) R-Cl

c) R-Br                          d) R-I

4.2.8 is the electronegativity of________

      a) F                              b) Cl

      c) Br                             d) I

5. Which one is not a nucleophile?

      a) C2H5O─                     b) SCN─

      c) NH3                                                      d) H3C+

6. The number of molecules taking part in the rate determining step is called_________

a) Order of reaction      

b) Rate or reaction

c) Molecularity of a reaction

d) Extent of a reaction

7. During SN2 mechanism,carbon atom changes it state of hybridization from___________

a) sp→sp2                    b) sp2→sp3

c) sp3→sp                    d) sp3→sp2

8. What will be the order of reaction of a reaction whose rate can be expressed R = K [A] [B]?

a) Zero                    b) One

c) Two                    d) Three

9. Which one among the following is not a good

leaving group?

a) HSO4─                      b) Cl─

c) OH─                         d) Br─

10. What is the order of kinetics in the SN1

mechanism?

a) Zero                          b) First

c) Second                     d) Third

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