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Class 9 Science Chapter 2 Is Matter Around Us Pure Quiz 5
Welcome to Quiz 5 of Class 9 Science Chapter 2 Is Matter Around Us Pure, focuses on helping them understand the classification of matter and its types, such as mixtures, solutions, and compounds. As you’ve already completed quizzes 1 to 4, This final 5 quiz on Is Matter Around Us Pure will help you consolidate all the knowledge you’ve gained from the previous quizzes. Throughout Chapter 2, we’ve dived into the classification of matter, distinguishing between pure substances such as elements and compounds, and mixtures like homogeneous and heterogeneous. Is Matter Around Us Pure quiz 5 is designed to test your understanding of these concepts while reinforcing your learning and preparing you for future topics in chemistry.
Let’s begin Quiz 5 and evaluate how well you’ve mastered the subject. It’s a great way to wrap up the chapter, review key points, and strengthen your grasp of the material!
Class 9 Science Chapter 2: Is Matter Around Us Pure Quiz 5 Rules
- Time Limit: You have 15 minutes to complete the quiz. Manage your time wisely.
- Multiple Choices: Each question provides multiple answer options. Choose the one you believe is correct.
- Single Correct Answer: Every question has only one correct answer. Select the best option based on your knowledge.
- No Negative Marking: There’s no penalty for incorrect answers, so take a guess if you’re unsure.
Class 9 Science Chapter 2: Is Matter Around Us Pure Quiz 5 Structure
- Total Questions: 10
- Topics Covered:
- Classification of matter
- Pure substances vs. mixtures
- Methods of separation
- Difference between homogeneous and heterogeneous mixtures
- Goal: Use this quiz to reinforce your understanding and prepare confidently for exams.
Class 9 Chemistry Chapter 2 Is Matter Around Us Pure Quiz Questions
These Is Matter Around Us Pure quiz questions are designed to cover important topics like the classification of matter, the difference between pure substances and mixtures, various methods of separation, and the characteristics of homogeneous and heterogeneous mixtures. Use quiz on Is Matter Around Us Pure to assess your knowledge, sharpen your skills, and prepare yourself for your upcoming exams. Answer each question confidently based on what you’ve learned.
Question 1: What type of mixture is steel?
a) Alloy
b) Heterogeneous mixture
c) Colloid
d) Suspension
Answer:
The correct answer is a) Alloy.
An alloy is a homogeneous mixture of two or more metals or a metal and a non-metal. Steel is an alloy because it is made by combining iron and carbon, along with other elements like manganese, nickel, and chromium, to enhance its properties.
Question 2: Which of the following is not a homogeneous mixture?
a) Air
b) Sugar solution
c) Vegetable soup
d) Saltwater
Answer:
The correct answer is c) Vegetable soup.
A homogeneous mixture has uniform composition throughout. Vegetable soup is not homogeneous as the pieces of vegetables are not evenly distributed.
Question 3: An example of liquid metal and liquid non-metal is __________ and __________ respectively.
a) Gallium, mercury
b) Mercury, chlorine
c) Mercury, bromine
d) Bromine, sulphur
Answer:
The correct answer is c) Mercury, bromine.
Mercury is a liquid metal, and bromine is a liquid non-metal, both of which are in the liquid state at room temperature.
Question 4: To which of the following category does ice cream belong?
a) Solution
b) Emulsion
c) Element
d) Suspension
Answer:
The correct answer is b) Emulsion.
Ice cream is an emulsion, which is a mixture where tiny droplets of one liquid are dispersed in another.
Question 5: Amount of heat required to change 1g of a solid into liquid at atmospheric pressure is known as
a) Latent heat of fusion
b) Melting
c) Latent heat of vaporization
d) Boiling point
Answer:
The correct answer is a) Latent heat of fusion.
Latent heat of fusion is the amount of heat required to change 1g of a solid into a liquid without changing its temperature.
Question 6: Branch of science that deals with composition, structure, and properties of matter and the changes that matter undergoes is
a) Biology
b) Physics
c) Chemistry
d) Mathematics
Answer:
The correct answer is c) Chemistry.
Chemistry is the branch of science that focuses on the composition, structure, and properties of substances and their transformations.
Question 7: Which of the following is not a compound?
a) Marble
b) Graphite
c) Glass
d) Sand
Answer:
The correct answer is b) Graphite.
Graphite is a form of carbon, which consists of only one type of atom and is not a compound.
Question 8: Which of the following increases with an increase in temperature in the case of a liquid?
a) Vapour pressure
b) Surface tension
c) Viscosity
d) All of these
Answer:
The correct answer is a) Vapour pressure.
As the temperature increases, more molecules gain enough energy to escape from the liquid, leading to an increase in vapour pressure.
Question 9: Molecular attraction and the size of molecules in a gas are not negligible at
a) Critical point
b) High pressure
c) High temperature and low pressure
d) Low temperature and high pressure
Answer:
The correct answer is d) Low temperature and high pressure.
At low temperatures and high pressures, the molecules in a gas experience significant attractions and their size becomes noticeable.
Question 10: What type of mixture is steel?
a) Alloy
b) Heterogeneous mixture
c) Colloid
d) Suspension
Answer:
The correct answer is a) Alloy.
An alloy is a homogeneous mixture of two or more metals or a metal and a non-metal. Steel is an alloy because it is made by combining iron and carbon, along with other elements like manganese, nickel, chromium, and vanadium to give steel specific properties.
