UJIAN PENILAIAN SUMATIF 2 (DK024)- TRIAL

The correct IUPAC name for this compound is

• trans-2,3,4-terimethyl-3-hexene

• cis-2,3,4-trimethyl-3-hexene

• trans-2,3,4-trimethyl-2-hexene

• cis-2,3,4-trimethyl-2-hexene

Choose the most stable alkene that obeys Saytzeff's rule.

• CH₃CH=CHCH₃

• (CH₃)₂C=C(CH₃)₂

• CH₃CH=CH₂

• (CH₃CH₂)CH=CHCH₃

The conversion above can be carried out using

• Hot acidified KMnO₄

• H₂O in dilute H₂SO₄

• cold alkaline KMnO₄

• Hot concentrated H₂SO₄

The mechanism for the following sequence of reactions is

• Electrophilic addition reaction

• Nucleophilic addition reaction

• Electrophilic substitution reaction

• Nucleophilic substitution reaction

An organic compound P undergo hydrogenation reaction. P also reacts with HCl to form 2-chlorobutane. Determine the structure of P.

• CH₃CH₂CH=CH₂

• CH₃C(CH₃)=CH₂

• CH₃CH=CH₂

• CH₃CH₂CH(OH)CH₃

Which of the following reagents can be used to distinguish between alkane and alkene?

• Hydrogen gas with a nickel catalyst

• Chlorine water

• Br₂ in CH₂Cl₂ in the dark

• Hot acidified potassium permanganate

Which of the following is NOT possibly an alkene?

• C₂H₂

• C₄H₈

• C₄H₆

• C₆H₈

Several reagents were reacted with 2-methyl-2-pentene. Which of the following products is NOT correct?

• Reagents: H₂ with Platinum catalyst

  Product: 2-methylpentane

• Reagents: Aqueous Bromine

  Product: 3-bromo-2-methyl-2-pentanol

• Reagents: H₂O in dilute H₂SO₄

  Product: 2-methyl-2-pentanol

• Reagents: HBr in CH₃OOCH₃

  Product: 2-bromo-2-methylpentane

Choose reaction(s) that follow(s) Markovnikov's rule.

• I only

• I and II

• II and III

• I, II and III

What is the name of the following alkene?

• 2,2-dichloro-6-methylcyclohexene

• 3,3-dichloro-1-methylcyclohexene

• 5,5-dichloro-1-methylcyclohexene

• 1,1-dichloro-3-methyl-2-cyclohexene