Quiz- Electrophillic addition reaction

Electrophilic Addition Quiz

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Test your knowledge on Electrophilic Addition for JEE and NEET.

1. What is the first step in the electrophilic addition reaction of an alkene?

• Attack by a nucleophile on the alkene.
• Breakdown of the double bond.
• Attack by an electrophile on the $\pi$-electrons of the double bond.
• Formation of a free radical.

2. What is the major product when propene ($CH_3CH=CH_2$) reacts with HBr?

• 1-bromopropane
• 2-bromopropane
• 1,2-dibromopropane
• Propyl bromide

3. The addition of HBr to propene in the presence of a peroxide follows which rule?

• Markovnikov's rule
• Anti-Markovnikov's rule
• Saytzeff's rule
• Hofmann's rule

4. Which of the following is the correct order of stability for carbocations?

• Primary < Secondary < Tertiary
• Tertiary < Secondary < Primary
• Primary = Secondary = Tertiary
• Secondary < Primary < Tertiary

5. The addition of $H_2O$ to an alkene in the presence of an acid catalyst produces:

• An alkane
• An aldehyde
• An alcohol
• A ketone

6. The addition of $Br_2$ to an alkene in $CCl_4$ results in which type of addition?

• Syn-addition
• Anti-addition
• Both syn and anti-addition
• Elimination reaction

7. Which of the following is the most reactive towards electrophilic addition?

• $CH_3CH=CH_2$
• $CH_2=CH_2$
• $(CH_3)_2C=CH_2$
• $(CH_3)_2C=C(CH_3)_2$

8. What is the product of the reaction between propyne and excess $H_2$ in the presence of a platinum catalyst?

• Propene
• Propane
• Propanol
• Propanone

9. The addition of $H_2O$ to an alkyne in the presence of $HgSO_4$ and $H_2SO_4$ follows:

• Markovnikov's rule, followed by tautomerism.
• Anti-Markovnikov's rule.
• Syn-addition only.
• Free radical mechanism.

10. What is the product when but-1-ene is reacted with $Br_2$ in water?

• 1,2-dibromobutane
• 2-bromobutan-1-ol
• 1-bromobutan-2-ol
• 1,2-butanediol

11. Which of the following is the major product of the reaction of 1,2-dimethylcyclohexene with $H_2O$ in the presence of $H_2SO_4$?

• 1,2-dimethylcyclohexane
• 1,2-dimethylcyclohexanol
• 1-methyl-2-cyclohexanol
• 1,2-dimethylcyclohex-1-ene

12. What is the product of the reaction of propyne with $H_2$ in the presence of Lindlar's catalyst?

• Propane
• Propylene
• Propanol
• Propanal

13. The addition of $H_2$ to an alkyne using Sodium in liquid ammonia yields a:

• cis-alkene
• trans-alkene
• alkane
• alkyne

14. What is the product of the reaction of ethene with cold, dilute, alkaline $KMnO_4$ (Baeyer's reagent)?

• Ethane
• Ethanol
• Ethylene glycol
• Ethanal

15. What is the main product of the reaction between propyne and excess HBr?

• 1,1-dibromopropane
• 2,2-dibromopropane
• 1,2-dibromopropane
• Propyl bromide

16. The hydration of propyne in the presence of $HgSO_4$ and $H_2SO_4$ yields:

• Propanol
• Propanal
• Acetone
• Propanoic acid

17. Ozonolysis of 2-butene followed by a reductive workup with $Zn/H_2O$ yields:

• Ethanal
• Propanone
• Methanal
• Butanone

18. The addition of water to isobutylene (2-methylpropene) follows which rule?

• Zaitsev's rule
• Saytzeff's rule
• Anti-Markovnikov's rule
• Markovnikov's rule

19. Which of the following is the electrophile in the acid-catalyzed hydration of an alkene?

• $OH^-$
• $H_2O$
• $H_3O^+$
• A free radical

20. What is the product of the reaction of propyne with $BH_3$ followed by $H_2O_2, OH^-$?

• Propanone
• Propanol
• Propanal
• Propanoic acid

Quiz Results