Class 9 Quiz on Hydrocarbons and Organic Chemistry

What is the general formula for alkanes?

• CnH2n+2

• CnH2n-2

• CnH2n

• CnH2n+1

Which of the following is a saturated hydrocarbon?

• Acetylene

• Ethylene

• Methane

• Butene

What is the property of carbon that allows it to form long chains?

• Tetra valency

• Catenation

• Isomerism

• Hydrogenation

Which of the following compounds is an example of an alkene?

• C2H6

• C3H8

• C2H4

• C4H10

What type of reaction do alkenes typically undergo?

• Hydrolysis reactions

• Addition reactions

• Substitution reactions

• Elimination reactions

Which of the following is a characteristic of alkynes?

• Contain only single bonds

• Contain at least one triple bond

• Are less reactive than alkanes

• Have the formula CnH2n+2

What is the term for compounds with the same molecular formula but different structures?

• Polymers

• Homologues

• Isomers

• Functional groups

Which of the following is a source of organic compounds?

• Coal

• Water

• Iron

• Sand

What is the primary suffix for alkenes?

• -ane

• -ene

• -ol

• -yne

Which of the following is a property of saturated hydrocarbons?

• Have lower boiling points than unsaturated hydrocarbons

• More reactive than unsaturated hydrocarbons

• Contain double bonds

• Only contain single bonds