Chemistry Mcqs

Ethyl chloride with nascent hydrogen produces_________________?

• (A)  methane
• (B)  ethane
• (C)  propane
• (D)  butane

Answer

Submitted By :Ali Uppal

SN2 reaction can be best carried out with__________________?

• (A)  primary alkyl halide
• (B)  secondary alkyl halide
• (C)  tertiary alkyl halide
• (D)  all

Answer

Submitted By :Ali Uppal

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

Answer

Submitted By :Ali Uppal

When two moles of ethyl chloride react with two 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

Answer

Submitted By :Ali Uppal

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

• (A)  CH3-X
• (B)  (CH3)3 C-CH2 – X
• (C)  (CH3)2 CH – X
• (D)  (CH3)3 C – X

Answer

Submitted By :Ali Uppal

Which one is not a nucleophile ?

• (A)  C2H5O-
• (B)  SCN-
• (C)  NH3
• (D)  H3C+

Answer

Submitted By :Ali Uppal

Which alkyl halide has the highest reactivity for a particular alkyl group ?

• (A)  R-F
• (B)  R-C
• (C)  R-Br
• (D)  R-I

Answer

Submitted By :Ali Uppal

50% inversion of configuration of molecules take place in a___________________?

• (A)  E1 – reaction
• (B)  E2 – reaction
• (C)  SN1 – reaction
• (D)  SN2 – reaction

Answer

Submitted By :Ali Uppal

The best method of preparation of alkyl halides is a reaction of alcohol with__________________?

• (A)  Zn / HCI
• (B)  SOCl2 / Pyridine
• (C)  PCI3
• (D)  PCI5

Answer

Submitted By :Ali Uppal

In primary alkyl halides the halogen atom is attached to a carbon which is further attached to how many carbon atoms__________________?

• (A)  two
• (B)  three
• (C)  one
• (D)  four

Answer

Submitted By :Ali Uppal