This 9th class chemistry chapter 11 test is an original ExamPaperDesk practice paper for Chapter 11, Hydrocarbons. Every question is printed in both English and Urdu, so English medium and Urdu medium students can use the same paper. It carries 36 marks: 10 multiple-choice questions with a bubble sheet, 10 short questions of which you attempt any eight, and 2 detailed questions. An answer key for the MCQs is given at the end.
Before you attempt it, revise from the Class 9 Chemistry notes. The Class 9 Chemistry section of ExamPaperDesk is organised into notes, test papers, online papers, guess papers, past papers and textbook PDFs, and you can browse every Class 9 Chemistry test paper here.
How to Use This Chapter 11 Test
Print the paper or open it on your phone, close your book and attempt all three sections in one sitting, as you would in an exam. Fill in the bubble sheet for Section A, then check your MCQs against the answer key on the last page. For the short and detailed questions, compare your answers with the chapter in your textbook and note any topic you need to revise again.
Download the 9th Class Chemistry Chapter 11 Test PDF
What the Chapter 11 Test Covers: Hydrocarbons
The paper is set across the whole of Chapter 11 rather than one exercise, so it is a fair check of whether the chapter is finished. Questions are drawn from:
- What organic chemistry is, and why carbon forms so many compounds.
- Catenation and the tetravalency of carbon.
- Alkanes, alkenes and alkynes: general formulas, naming and structures.
- Saturated against unsaturated hydrocarbons, and how to distinguish them.
- Homologous series and functional groups.
- Sources of hydrocarbons, including petroleum and natural gas.
Facts You Need Before Attempting It
Most of the marks in Hydrocarbons hang on a small number of statements being exactly right:
- Carbon is tetravalent and shows catenation, which is why it forms millions of compounds.
- Alkanes are saturated with general formula CnH2n+2; alkenes have a double bond, alkynes a triple bond.
- Members of a homologous series differ by one CH2 unit and share the same general formula and chemical properties.
Where Marks Go Missing in This Chapter
- Giving alkenes the general formula of alkanes.
- Calling an alkene saturated.
- Saying members of a homologous series differ by one carbon atom without mentioning the two hydrogens.
Frequently Asked Questions
What is the difference between saturated and unsaturated hydrocarbons?
Saturated hydrocarbons such as alkanes contain only single carbon-carbon bonds. Unsaturated hydrocarbons such as alkenes and alkynes contain at least one double or triple bond.
Is the answer key included?
An answer key for the multiple-choice section is printed at the end of the paper. The written sections should be marked against your textbook and the solved chapter notes.
Related Class 9 Chemistry Resources
Continue with Chapter 10 test and Chapter 12 test. Everything for the subject is collected on the Class 9 Chemistry page, including the solved chapter notes and the rest of the Class 9 Chemistry test papers.