The latent heat of fusion of ice in J/kg is

3.34 x 10⁵ is the correct answer.

Class 9 Science Chapter 1 Matter in Our Surroundings MCQ

NCERT MCQ Solutions for Class 9 Science Chapter 1 Matter in Our Surroundings for new session describing key concepts. 9th Science MCQ solutions cover topics like states of matter, physical and chemical changes and the effects of temperature and pressure. With detailed explanations, students can grasp diffusion, evaporation and condensation efficiently. Practicing Matter in Our Surroundings MCQ helps in exam preparation, ensuring clarity in fundamental scientific principles through well-explained multiple-choice questions and conceptual applications.
Class 9 Science Chapter 1 NCERT Solutions
Class 9 Multiple Choice Questions
Class 9 Science MCQ

9th Science MCQ on Matter in Our Surroundings

Matter exists everywhere around us and understanding its properties is fundamental to science. In NCERT Class 9 Science Chapter 1, we explore the composition, states and behavior of matter under different conditions. Matter is anything that occupies space and has mass, which forms the basis of physics and chemistry. The Matter in Our Surroundings MCQ section in exams tests students’ topic-wise clarity about the concepts. NCERT Book Class 9 Science Chapter 1 Multiple Choice Questions often include themes where matter changes from one state to another due to temperature or pressure variations. The Matter in Our Surroundings Quiz helps reinforce knowledge about solids, liquids and gases, emphasizing characteristics such as intermolecular forces and kinetic energy. Students can find Class 9 Science Chapter 1 MCQ Objective Questions beneficial in preparing for exams by revising fundamental scientific principles.

Q1. In which of the following conditions, the distance between the molecules of hydrogen gas would increase? (i) Increasing pressure on hydrogen contained in a closed container. (ii) Some hydrogen gas leaking out of the container. (iii) Increasing the volume of the container of hydrogen gas. (iv) Adding more hydrogen gas to the container without increasing the volume of the container.

[A]. (i) and (iii)

[B]. (ii) and (iv)

[C]. (ii) and (iii)

[D]. (i) and (iv)

Q2. During rainy season, rate of evaporation decreases because

[A]. Humidity is high in air.

[B]. Humidity is low in air.

[C]. Humidity does not change.

[D]. There is no effect of humidity.

Q3. Two beakers A and B contain normal water and hot water respectively. Mohan adds equal amount of blue copper sulphate crystals to them. Which of the following observations is correct?

[A]. Blue colour will spread more quickly in A.

[B]. Blue colour will spread more quickly in B.

[C]. Blue colour will not spread in either of the beakers.

[D]. Blue colour will take the same time in both A and B to spread.

Q4. Which of the following is the correct order of inter particle spaces present in the matter?

[A]. Solid > Liquid > Gas

[B]. Solid < Liquid > Gas

[C]. Solid < Liquid < Gas

[D]. Solid > Liquid < Gas

States of Matter in Class 9 Science Chapter 1 MCQ

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Matter primarily exists in three states—solid, liquid and gas — each with distinct properties. Matter in Our Surroundings MCQ Objective Questions often assess how these states differ based on molecular arrangement and movement. In solids, particles are tightly packed, giving them a definite shape and volume. Liquids have a fixed volume but take the shape of their container, while gases expand to fill the available space. NCERT Class 9 Science Chapter 1 Practice Questions frequently cover concepts like diffusion, compressibility and thermal expansion. The Matter in Our Surroundings Practice Questions also examine phase changes such as melting, boiling and condensation, which are key transformations governed by heat energy. To test understanding, students can attempt Class 9 Science Chapter 1 Test, which includes application-based problems and reasoning-based questions.

Q5. Seema visited a Natural Gas Compressing Unit and found that the gas can be liquefied under specific conditions of temperature and pressure. While sharing her experience with friends she got confused. Help her to identify the correct set of conditions.

[A]. Low temperature, low pressure

[B]. Low temperature, high pressure

[C]. High temperature, high pressure

[D]. High temperature, low pressure

Q6. Which condition out of the following will increase the evaporation of water?

[A]. Increase in temperature of water

[B]. Decrease in temperature of water

[C]. Less exposed surface area of water

[D]. Adding common salt to water

Q7. Which of the following sublimes on heating?

[A]. Iodine

[B]. Camphor

[C]. Naphthalene

[D]. All of these

Q8. During summer, water kept in an earthen pot becomes cool because of the phenomenon of

[A]. Evaporation

[B]. Osmosis

[C]. Diffusion

[D]. Transpiration

Class 9th Science Chapter 1 MCQ on Changes in States of Matter

A key aspect of Class 9 Science Chapter 1 MCQ Online Test is understanding how matter changes from one state to another. This transformation occurs due to changes in temperature and pressure. When a solid absorbs heat, it reaches its melting point and turns into a liquid. Further heating causes the liquid to reach its boiling point, converting it into a gas. The Matter in Our Surroundings MCQ Online Test often examines these processes, including sublimation, where a solid directly turns into a gas without becoming a liquid. NCERT Class 9 Science Chapter 1 MCQ with Answers provides explanations for these transitions, reinforcing the role of kinetic energy. By attempting Matter in Our Surroundings MCQ with Answers, students can understand evaporation, condensation and latent heat, which are the main topics in thermodynamics.

Q9. Which one of the following sets of phenomenon would increase on raising the temperature?

[A]. Diffusion, evaporation, compression of gases.

[B]. Evaporation, diffusion, expansion of gases.

[C]. Evaporation, compression of gases, solubility.

[D]. Evaporation, solubility, diffusion, compression of gases.

Q10. Choose the correct statement out of the following:

[A]. Conversion of solid into vapours without passing through the liquid state is called sublimation.

[B]. Conversion of vapours into solid without passing through the liquid state is called sublimation.

[C]. Conversion of solid into liquid is called sublimation.

[D]. Conversion of vapours into solid without passing through the liquid state is called freezing.

Class 9 Science Chapter 1 MCQ on Matter in Daily Life

The concept of matter and its transformations plays a lead role in daily life. From cooking food to industrial applications, phase changes occur frequently. NCERT Textbook Solutions Class 9 Science Chapter 1 MCQ PDF provides a confined way to learn how gases compress in cylinders or why ice melts at room temperature. The Matter in Our Surroundings MCQ PDF further explains why some substances, like camphor, undergo sublimation. CBSE Class 9 Science Chapter 1 MCQ Questions are designed to test students’ grasp of these everyday phenomena. The Matter in Our Surroundings MCQ Questions also include real-world examples, such as how refrigerators function by utilizing condensation and evaporation cycles. Understanding these principles helps students relate scientific concepts to science practical.

Q11. The boiling points of diethyl ether, acetone and n-butyl alcohol are 35 °C, 56 °C and 118 °C respectively. Which one of the following correctly represents their boiling points in kelvin scale?

[A]. 306 K, 329 K, 391 K

[B]. 329 K, 392 Κ, 308 K

[C]. 308 K, 329 Κ, 391 Κ

[D]. 308 K, 329 K, 392 K

Q12. Chemically, dry ice is

[A]. Solid SO₂

[B]. Solid H₂

[C]. Solid NO₂

[D]. Solid CO₂

Q13. The property to flow is unique to fluids. Which one of the following statements is correct?

[A]. Only gases behave like fluids.

[B]. Gases and solids behave like fluids.

[C]. Gases and liquids behave like fluids.

[D]. Only liquids are fluids.

Testing Knowledge Through 9th Science Chapter 1 MCQs

To assess understanding of Class 9 Science Chapter 1, students should attempt Matter in Our Surroundings Important Questions based on past exam patterns. These questions often focus on reasoning and application rather than rote memorization. Class 9 NCERT Science Chapter 1 Questions and Answers guide students through detailed explanations, helping them refine their approach to problem-solving. The Matter in Our Surroundings Questions and Answers ensure that learners develop a scientific mindset by analyzing why certain properties of matter behave as they do. Finally, Class 9 Science Chapter 1 MCQ Test serves as an effective self-evaluation tool, preparing students for competitive exams and school assessments. Practicing these questions regularly strengthens foundational scientific knowledge essential for higher studies.

Q14. A few substances are arranged in the increasing order of forces of attraction between their particles. Which one of the following represents a correct arrangement?

[A]. Water, air, wind

[B]. Air, sugar, oil

[C]. Salt, juice, air

[D]. Oxygen, water, sugar

Q15. Forces of attraction are

[A]. Maximum in solids and minimum in gases.

[B]. Maximum in gases and minimum in solids.

[C]. Maximum in gases and minimum in liquids.

[D]. Maximum in liquids and minimum in gases.

Q16. On converting 25 °C, 38 °C and 66 °C to Kelvin scale, the correct sequence of temperature will be

[A]. 298 K, 311 K and 339 K

[B]. 298 K, 300 K and 338 K

[C]. 298 K, 310 K and 338 K

[D]. 273 K, 278 K and 543 K

Q17. Solids, liquids and gases differ from each other in terms of

[A]. Arrangement of particles.

[B]. Spaces between the particles.

[C]. Attractive forces between the particles.

[D]. All of these.

Why is the study of matter important in Class 9 Science Chapter 1 MCQ?

The study of matter is fundamental to understanding the physical world. NCERT Class 9 Science Chapter 1 MCQs introduces the concept of matter, its states and its behavior under different conditions. This knowledge is essential for grasping advanced concepts in physics and chemistry. For instance, understanding how Matter in Our Surroundings MCQ questions explore solid, liquid and gaseous states helps students analyze real-life phenomena like evaporation, condensation and sublimation. Learning about these processes is crucial in industries such as refrigeration, pharmaceuticals and food processing. By solving Class 9 Science Chapter 1 Multiple Choice Questions, students develop a scientific approach to problem-solving, preparing them for higher education and competitive exams.

How do changes in temperature (as per 9th Science Chapter 1 MCQ) affect the states of matter?

Changes in temperature and pressure significantly impact the states of matter, as explained in Matter in Our Surroundings Quiz and Class 9 Science Chapter 1 MCQ Objective Questions. When a solid is heated, its particles gain energy, weakening intermolecular forces and eventually melting into a liquid. Further heating converts the liquid into a gas through boiling or evaporation. Similarly, increasing pressure can force a gas into a liquid state, as seen in liquefied petroleum gas (LPG) cylinders. These transformations are tested in Matter in Our Surroundings Practice Questions, where students analyze how substances behave under different conditions. Understanding these principles is essential for applications in thermodynamics, meteorology and material science.

How can students prepare effectively for Class 9 Science Chapter 1 MCQ-based exams?

To prepare well in Class 9 Science Chapter 1 MCQ Online Test, students should focus on conceptual clarity rather than rote learning. Practicing with Matter in Our Surroundings MCQ with Answers helps in understanding key scientific principles through real-life examples. Using a Class 9 Science Chapter 1 MCQ PDF, students can review questions that test reasoning, application and theoretical knowledge. Attempting Matter in Our Surroundings Important Questions from past exams provides insight into frequently tested topics. Regular self-assessment with a Class 9 Science Chapter 1 MCQ Test enhances retention and application skills, preparing students for board exams and competitive tests like NTSE and Olympiads.