AQA A Level Chemistry - Alkenes

In alkenes the carbon atoms are connected to each other by ?

• Single bonds

• Double bonds

• Triple bonds

• Not connected

select the incorrect statement

• In alkenes, the carbons are connected by pi bonds

• Alkenes have almost same physical properties as that of the alkanes

• Alkenes are less reactive than alkanes

• Alkenes undergo polymerization reactions

Identify the one which shows E-Z mechanism

• 3-methylpent-2-ene

• 2-methylpent-2-ene

• Methyl-3-pent-2-ene

• 2,3-methylpentene

4-chlorobut-1-ene is the name of which among the following alkenes

• CH2Cl-CH2=CH-CH2

• CH2Cl=CH2-CH-CH2

• CH2Cl-CH2=CH2

• CH2Cl-CH2-CH=CH2

Tags

NGSS.HS-PS1-2

which of the following statements is true about alkenes?

• They are saturated hydrocarbons

• They are soluble in water

• They are unsaturated hydrocarbons

• They are insoluble in organic solvents

Tags

NGSS.HS-PS1-1

What is the IUPAC name for CH2=C(CH3)-CBr2CH3

• 2,2-dibromo, 3-Methyl, But-4-ene

• 3,3-dibromo, 2-Methyl, But-1-ene

• 2,2-dibromo, 3-Ethyl, Butene

• 2,2-bromo, 3, Methyl, But-2-ene

Which of the following compounds has the highest melting point?

• Hexane

• 2-Methylpentane

• 2,2-dimethylbutane

• 3-methylpentane

Which of the following carbocations is the least stable?

• Secondary

• Primary

• Tertiary

• Methyl

Tags

NGSS.HS-PS1-1

Which of the following reaction types is characteristic of alkenes?

• Nucleophilic subsititution

• Electrophilic addition

• Electrophilic substitution

• Nucleophilic addition

Which of following is given off during ripening fruits and vegetables?

• Ethyne

• Ethane

• Ethene

• Methane