Pearson Edexcel International GCSE (9–1) · CHEMISTRY · Chapter
Introduction to Organic Chemistry
185 practice questions
Topics covered
- Types of formula for organic molecules19 practice questions
- General formulae18 practice questions
- Displayed formulae19 practice questions
- Naming organic compounds19 practice questions
- Coding for the type of compound19 practice questions
- Coding for branched chains19 practice questions
- Structural isomerism in the alkanes19 practice questions
- A quick introductory look at the alcohols20 practice questions
- Some chemical reactions of organic compounds21 practice questions
Practice questions
131–140 of 185
Question 131
5 marks · Hard
Answer and see the solution →This question is about structural isomerism in the alkanes.
(a)[3 marks]Complete the following table for alkanes, giving the number of possible structural isomers for each formula.
Molecular formula Number of structural isomers C3H8 C4H10 C5H12 (b)[2 marks]Explain why C5H12 has more structural isomers than C3H8.
Question 132
2 marks · Hard
Answer and see the solution →Explain why it is not possible to have a structural isomer of methane (CH4).
Question 133
1 mark · Easy
Answer and see the solution →State the name of the functional group that all alcohols contain.
Question 134
3 marks · Easy
Answer and see the solution →The diagram below represents an organic compound.
(a)[1 mark]State the homologous series to which this compound belongs.
(b)[1 mark]Name the functional group found in this compound.
(c)[1 mark]Give the displayed formula of the functional group.
Question 135
2 marks · Easy
Answer and see the solution →The compound propanol is an alcohol. Use the information provided to name its homologous series and explain which part of its name identifies it as an alcohol.
Question 136
2 marks · Easy
Answer and see the solution →Explain why all alcohols have similar chemical properties. Refer to their functional group in your answer.
Question 137
3 marks · Easy
Answer and see the solution →The following table lists several organic compounds:
Compound Name Alcohol? (Yes/No) Suffix in Name Ethanol Butanol Butane Propanol Complete the table by: (i) Ticking Yes or No to show if each compound is an alcohol. (ii) Writing the suffix in the name that shows the compound is an alcohol.
Question 138
1 mark · Easy
Answer and see the solution →Write the displayed formula for the functional group present in all alcohols.
Question 139
3 marks · Easy
Answer and see the solution →The name of a compound can provide information about its structure.
(a)[1 mark]What does the suffix '-ol' at the end of a compound's name show about the compound?
(b)[2 marks]Write down the name of two compounds that contain this suffix.
Question 140
2 marks · Normal
Answer and see the solution →State the functional group present in all alcohols. Give its displayed formula.