10.2 Functional Group Chemistry

Which functional group is characterised by the general formula CnH2n?

A. Alkenes

B. Alkanes

C. Alkynes

D. Alcohols

Which reaction involves the breaking of a double bond and the addition of a molecule across it?

A. Substitution

B. Combustion

C. Electrophilic addition

D. Dehydration

Which test can be used to determine the presence of unsaturation in an organic compound?

A. Litmus test

B. Test with bromine water

C. Flame test

D. Test with silver nitrate

Which type of alcohol undergoes oxidation to produce a ketone?

A. Primary

B. Secondary

C. Tertiary

D. Quaternary

Which reaction involves the elimination of water from an alcohol?

A. Substitution

B. Combustion

C. Esterification

D. Dehydration

a) Define the term "functional group" in the context of organic chemistry. [2]

b) Explain the significance of functional groups in predicting the properties and reactivity of organic compounds. [3]

a) Describe the general properties and reactions associated with alkenes. [3]

b) Explain the test for unsaturation using bromine water. [2]

a) Differentiate between primary, secondary, and tertiary alcohols based on their structure. [3]

b) Describe one common use of alcohol in everyday life and explain the reason for this use based on the properties of alcohol. [2]

a) What is the general formula for alkanes? [1]

b) Describe the combustion reaction of alkanes. [2]

c) Explain the importance of alkanes in the petrochemical industry. [3]

a) Describe the electrophilic addition reaction typical of alkenes. [3]

b) What is the product formed when ethene undergoes electrophilic addition with hydrogen bromide? [2]

c) Why are alkenes more reactive than alkanes? [2]