Chapter 10 Test 2

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Chapter 10 Test 2

here is another test of chapter 10 Chemistry book II. Read all the questions carefully and answer them.

1. Which alkyl halide out of the following may follow both SN1 and SN2 mechanism?

1. CH3─X

CH3   H  |         |

1. b.     CH3─  C  ─  C ─X

  |         |CH3   H                   CH3

1. c.            CH ─ X

       CH3
                        CH3                        |

1. d.    CH3─ C─ X

|CH3

2. In elimination reaction of alkyl halide, which site is more susceptible for the attack of nucleophile?

A) α-carbon                   B) β-carbon

C) α-hydrogen               D) β-hydrogen

3. When two moles of ethyl chloride react with moles of sodium in the presence of ether, what will be formed?

A) 2 moles of ethane      B) 1 mole of ethane

C) 2 moles of butane     D) 1 mole of butane

4. Zn-Cu couple and alcohol generate_______

      A) [H]                            B) H2  

C) [O]                            D) O2

5. When CO2 is made to react with ethyl magnesium iodide, followed by acid hydrolysis, the product formed is_________

A) Propane                    B) Propanoic acid

C) Propanal                   D) Propanol

6. Grignard reagent is reactive due to ________

A) The presence of halogen atom

B) The presence of magnesium atom

C) The polarity of C-Mg bond

D) All   

7. SN2 reaction can be best carried out with____

A) Primary alkyl halide B) Secondary alkyl halide
C) Tertiary alkyl halide D) All

8. Elimination bimolecular reactions involve____

A) First order kinetics B) Second order kinetics

C) Third order kinetics D) Zero order kinetics

9. For which mechanisms, the first step involved is the same?

A) E1+E2                      B) E2+SN2

C) S1+SN1                    D) SN1+SN2

10. The rate of E1 reaction depends upon____________

A) The concentration of substrate

B) The concentration of nucleophile

C) The concentration of substrate as well as nucleophile

D) No dependence