9th Class Chemistry Chapter 1 Test: Free States of Matter Practice Paper

This 9th class chemistry chapter 1 test is an original ExamPaperDesk practice paper for Chapter 1, States of Matter. 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 Chapter 1 textbook PDF and work through the Chapter 1 exercise questions. 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 already browse our Class 9 Chemistry notes and textbook PDFs.

How to Use This Chapter 1 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 1 Test PDF

What the Chapter 1 Test Covers: States of Matter

The paper is set across the whole of Chapter 1 rather than one exercise, so it is a fair check of whether the chapter is finished. Questions are drawn from:

• The three states of matter and the kinetic molecular model that explains them.
• Diffusion and effusion, and the factors that affect the rate of each.
• Evaporation, boiling point and the effect of pressure on boiling point.
• Melting and freezing points, and what happens to energy during a change of state.
• Allotropy, with the allotropic forms of carbon and sulphur.
• Amorphous and crystalline solids, and transition temperature.

Facts You Need Before Attempting It

Most of the marks in States of Matter hang on a small number of statements being exactly right:

• Diffusion is faster in gases than in liquids because gas molecules are far apart and move rapidly.
• A liquid boils when its vapour pressure equals the external atmospheric pressure, which is why boiling point falls at altitude.
• Temperature stays constant during a change of state because the energy supplied breaks forces of attraction rather than raising kinetic energy.

Where Marks Go Missing in This Chapter

• Saying temperature rises during melting, when it stays constant.
• Confusing evaporation, which happens at all temperatures, with boiling, which happens at a fixed one.
• Listing allotropes of the wrong element.

Frequently Asked Questions

Why does temperature stay constant while ice melts?

Because the heat supplied is used to overcome the forces holding the particles in the solid lattice rather than to increase their kinetic energy. Once all the ice has melted, further heating raises the temperature again.

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 2 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.