Introduction to Nucleophilic Substitution Reaction
Trending Questions
Q. Write the structures of the major products expected from the following reactions:
A: Mononitration of 3-methylphenol
B: Dinitration of 3-methylphenol
C: Mononitration of phenyl methanoate
A: Mononitration of 3-methylphenol
B: Dinitration of 3-methylphenol
C: Mononitration of phenyl methanoate
Q. Consider the reaction :
CH3CH2CH2Br+NaCN→CH3CH2CH2CN+NaBr
This reaction will be fastest in :
CH3CH2CH2Br+NaCN→CH3CH2CH2CN+NaBr
This reaction will be fastest in :
- N, N'-dimethylformamide (DMF)
- Water
- ethanol
- Methanol
Q. Correct order for nucleophilic addition reaction.
- 2 > 1 > 3 > 4
- 4 > 3 > 2 > 1
- 2 > 3 > 4 > 1
- 4 > 2 > 3 > 1
Q. The correct order of rate of reaction toward nucleophilic addition reaction.
- a > b > c > d > e
- a > b > d > c > e
- a > d > e > b > c
- a > b > e > d > c
Q.
Which of the following actinoids show oxidation states upto +7?
- Pu
- Np
- Am
- U
Q. Which of the following is a good method for the conversion of an alcohol into an alkyl chloride?
- By treating the alcohol with SOCl2
- By treating the alcohol with PCl5
- By treating the alcohol with PCl3
- By treating alcohol with Lucas reagent
Q. In nucleophilic addition reactions aldehydes are more reactive than ketones due to
- +I effect
- -I effect
- Resonance
- Electromeric effect
Q. Bond breaking and bond making takes place in a single step in reaction.
- SN2
- SN1
- E1
- SNi
Q. Consider the following reactions, which are carried out at the same temperature.
CH3−Br+OH⊖EtOH⟶CH3−OH+Br⊖...(i)CH3−Br+OH⊖DMSO⟶CH3−OH+Br⊖...(i)
Which of the following statement is correct about these reactions?
CH3−Br+OH⊖EtOH⟶CH3−OH+Br⊖...(i)CH3−Br+OH⊖DMSO⟶CH3−OH+Br⊖...(i)
Which of the following statement is correct about these reactions?
- Both the reactions take place at the same rate
- The first reaction takes place faster than second reaction.
- The second reaction takes place faster than first reaction.
- Both the reactions take place by SN1 Mechanism
Q.
Find the product Q.
Find the product Q.
Q.
WHY DIFFERENT REACTIONS PROCEED WITH DIFFERENT RATES??
Q.
Identify the product formed:
Identify the product formed:
Q. What will be the product of the following reaction:
Q. Ph−Me∣C∣H−OHSOCl2⟶C5H5N medium
Which statement is true for the above reaction?
Which statement is true for the above reaction?
- Retention of configuration
- Inversion of configuration
- Both (A) and (B)
- None of the above
Q. In which reaction incorrect product is formed ?
- CH3−COCH3Zn−Hg−−−−−→conc.HClCH3−CH2−CH3
- Ph−I+C2H5ONa→Ph−OC2H5
- CH3−CHOΔ−−−−−−→dil.NaOHCH3−CH=CH−CHO
- HCHOconc.NaOH−−−−−−−→HCOONa+CH3OH
Q. Express -25.6875 in p/q form
Q. How many 1, 2-Shifts are involved during the course of following reaction:
- 1
- 2
- 3
- 4
Q. The major product of the following raction is :
Q. Match the reactions from List-I with the catalyst or reagent used in them from List-II.
List-I | List-II |
A) Sabatier Senderens reaction | 1) Anhydrous AlCl3 |
B) Friedel crafts reaction | 2) Ni+H2 |
C) Wurtz reaction | 3) Sodium acetate |
D) Kolbe's electrolysis | 4) Na 5) CH4 |
- A-2, B-1, C-4, D-3
- A-1, B-2, C-5, D-4
- A-2, B-5, C-2, D-1
- A-3, B-4, C-2, D-1
Q. Carbocation intermediate is formed in SN1 type of reactions.
- True
- False
Q. Predict the major product in the reaction shown.
- o-bromonitrobenzene
- m-bromonitrobenzene
- p-bromonitrobenzene
- 1, 3- dibromobenzene
Q. Nucleophilic addition reaction will be most favoured in
- CH3CH2CHO
- CH3CHO
- (CH3)2C=O
Q. Which of the following is the strongest base?
Q. Major product will be: