Answer: Question 2. Yes, all materials possess mass and occupy space. (b) Which of the changes are exothermic and endothermic? Question 7. Correct Option is : 2. Put a drop of blue ink slowly along the sides of the first beaker and honey in the same way in another beaker. The temperature-time graph given alongside shows the heating curve for pure wax. Hence, a tree acquires more leaves during summer. Answers: Anything that occupies space and has mass is called Matter. Look at the following figures and suggest in which of the glass containers, i.e., A, B, C or D, the rate of evaporation will be the highest? MCQs from CBSE Class 9 Science Chapter 1: Matter in Our Surroundings 1. Suddenly she felt intense heat from the puff of steam gushing out of the spout of the kettle. Gases are compressible because the intermolecular space is very large in gases, whereas liquids are not compressible because in liquids, the intermolecular space is less. Who do you think would be more comfortable and why? Register online for Science tuition on Vedantu.com to … Will this water freeze at 0°C? ENROLL . Shrinking of grapes kept in thick sugar syrup. Why do wet clothes dry quickly in the sun than in the shade? Since ice and water are in equilibrium, the temperature would be zero. Describe the continuous motion of particles of matter with the help of an activity. Solution : high compressibility. (d) Ice is solid at 0°C because it has a definite volume and definite shape due to strong intermolecular forces. The amount of heat that is required to change 1 kg of solid into liquid at atmospheric pressure without any change in temperature at its melting point, is known as latent heat of fusion. Temperature changes during evaporation. According to the past trends and previous years question papers, this particular unit carries 23 marks out of 100. Determination of boiling point of water: Question 3. Why does the temperature of a substance remain constant during its melting point or boiling point? Is there any similarity in materials? Let the bulb of the thermometer remain in mixture of ice and water for some more time and keep recording the temperature. Multiple Choice Questions In case of ice, the water molecules have low energy while in case of steam the water molecules have high energy. (i) Incompressible, no fixed shape high compressibility. Take crushed ice in a beaker and insert a thermometer in the beaker by hanging it from the clamp of the stand in such a way that the bulb of the thermometer is completely inside the ice. Question 14. Wind speed: The rate of evaporation increases with increase in wind speed. Question 5. Explain interconversion of three states of matter with the help of flow chart. Answer: Download free CBSE Sample paper for Class 9, Chemistry. In which of the following, the particles have highest forces of attraction? The colour of the solid is seen spreading slowly. Yes, a rubber band changes shape under force and regains the same shape when the force is removed. Save. Boiling takes place only at the boiling point of the liquid. Matter in Our Surroundings CBSE Class 9 Science Chapter 1 - Complete explanation and Notes of the chapter 'Matter in Our Surroundings'.. Matter in our surroundings Class 9 Science Chapter 1 Explanation in Hindi, Imp Questions and Answers. 3: Question 1: Which of the following are matter? 4. If we put strips of wet cloth on the forehead of a person suffering from high fever, the water evaporates taking heat from the body. Kinetic energy of particles of water in three vessels A, B and C are EA, EB and EC respectively and EA > EB > EC. Assertion: Diffusion occurs readily in gas as compared to solids. Earthworm dying on coming in contact with common salt. (e) A1B1—Latent heat of fusion. (b) What is the melting point of the substance? Answer: A lot of students tend to only focus on memorizing information and relying on cramming learning. In solids, the particles have highly ordered arrangement because the intermolecular forces between the particles are very strong. (a) A-Solid state, © 2020 TCY Learning Solutions(P) Ltd. All Rights Reserved. Question 1. Chair and almond are forms of matter in the solid state. (d) Which portions of the graph indicates that change of state is taking place? ‘A’ is a gas. When 50 g of sugar is dissolved in 100 mL of water, there is no increase in volume. Explain how the rate of evaporation of a liquid is affected with: Question 9. Assertion: Solids have a fixed shape but no fixed volume. Which of the following are matter? This observation indicates that particles of water have spaces between them into which sugar particles fit. Also the material is not rigid. In which of the […] It is the amount of heat energy required to change 1 kg of liquid into gas at its boiling point. NaCl (solid) has particles with the highest forces of attraction. Chair, air, love, smell, hate, almonds, thought, cold, cold drink, smell of perfume. Answer: Print; Share; Edit; Delete; Host a game. A sample of water under study was found to boil at 102°C at normal temperature and pressure. MCQ Questions for Class 9 Science with Answers were prepared based on the latest exam pattern. Increase in moisture in the surrounding air. Free PDF Download - Best collection of CBSE topper Notes, Important Questions, Sample papers and NCERT Solutions for CBSE Class 9 Chemistry Matter In Our Surroundings. Question 5: The number of common states of matter is: 5. Matter in Our Surroundings Class 9 Notes, Video Explanation, Question Answer. Answer: Answer: Therefore, solids have a regular geometrical shape. Sagnik Mitra. Here you can get Class 9 Important Questions Science based on NCERT Text book for Class IX.Science Class 9 Important Questions are very helpful to score high marks in board exams. Question 6. 4. Question 5. Solo Practice. Why do we feel comfortable under a fan when we are perspiring? Reason: Evaporation is a surface phenomenon. Answer: MCQ Questions for Class 9 Science: Ch 1 Matter in our Surroundings Answer: Latent heat of solidification is given off. Question 8. Which of the following diffuses faster? Name the state of matter in which: Latent heat of evaporation of two liquids A and B is 100 J/kg and 150 J/kg respectively. Conditions that can increase the rate of evaporation of water are: Question 10. Question 4: Particles in the matter are. Delete Quiz. Comment. Rate of evaporation increases if wind speed increases. Therefore CBSE Board decided to dedicate a large part … 2. Answer: Question 9. Discuss the various factors which affect the rate of evaporation. Answer: Due to this, they strike faster on the particles of sugar than cold water molecules. Take crystals of ammonium chloride in a china dish. Describe an activity to determine the boiling point of water and melting point of ice. (ii) Particles just move around randomly because of very weak force of attraction. Please be sure to answer the question. 6 months ago. (b) ‘P’, ‘0’ and ‘S’ are endothermic and ‘R’ is exothermic. Finish Editing. The diagram below shows burning of an oil lamp. This makes the place cool and comfortable. Download free printable worksheets Chemistry pdf of CBSE and kendriya vidyalaya Schools as per latest syllabus in pdf, CBSE Class 9 Chemistry Worksheet - Matter In Our Surrounding - Practice worksheets for CBSE students. Rate of evaporation increases with rise in temperature. To play this quiz, please finish editing it. The temperature in the sunny area is higher than in the shade and evaporation takes place at a faster rate at high temperature. Answer: A student heats a beaker containing ice and water. Drop a crystal of copper sulphate or potassium permanganate into a glass of hot water. This temperature is the melting point of ice. Question 13. Yes, it is a solid. Here you can find the Science chapter, Matter in Our Surroundings, Important Questions & Preparation Tips for CBSE Class 9 Semester Assessments 2017-2018. Matter in Our Surroundings - Particle Model o... NCERT Sol. of steam contains more heat because when it was being changed from water to steam it … When we place few crystals of potassium permanganate in a beaker containing water, we get two distinct layers—colourless water at the top and pink colour at the bottom. Answer: The sweat is readily evaporated from the body by the air from the fan. and name the process involved. The primary objective here was to improve the evaluating and analytical skills of a student. liquids. Priyanshi would be more comfortable because cotton is a good absorber than nylon. Can materials exist in all the three states? While heating ice in a beaker with a thermometer suspended in it, a student recorded the following observations: Online Test for Class 9 Chemistry Matter In Our Surroundings . Based on the above observations, answer the following questions: Question 9. Nature of the liquid: The volatile compounds evaporate faster than less volatile compounds (liquids). MATTER IN OUR SURROUNDINGS QUESTION ANSWERS, cbse english science CLASS 9 MATTER IN OUR SURROUNDINGS QUESTION ANSWERS, Ncert CLASS 9 english science MATTER IN OUR SURROUNDINGS QUESTION ANSWERS notes, ncert CLASS 9 english science MATTER IN OUR SURROUNDINGS QUESTION ANSWERS … Swelling up of a raisin on keeping in water. It absorbs sweat from the body and provides large surface area for evaporation which causes cooling effect. You will observe a steady stream of bubbles. C—liquid state, Thus, moist strips will lower his body temperature. In the inside of the funnel white deposits of ammonium chloride is seen which directly converts into gaseous state and then solidifies. george_m_tms_31680. Question 2. Explain why. Chapter 1 – Matter in Our Surroundings is a part of Unit 1: Matter – Its Nature and Behavior. Reason: The particles of gas have greater space between them compared to solids. CBSE Board introduced questions based on - Higher Order Thinking Skills (HOTs). Hence, wet clothes dry quickly in the sun. (a) State the change(s) observed between 2-3 min. You are given the following substances with their melting and boiling points. Humidity: The rate of evaporation decreases with increase in humidity. Question 8. More transpiration requires more leaves. 5. [NCERT Exemplar] MATTER IN OUR SURROUNDINGS NOTES. (b) 15°C Multiple Choice Questions States of Matter. Answer: Water molecules due to liquid state, collide with solid particles and intermix due to sufficient space between molecules. Solution: Chair – It is matter Air – It is matter Love – It is not matter […] This test is Rated positive by 87% students preparing for Class 9.This MCQ test is related to Class 9 syllabus, prepared by Class 9 teachers. Chair, air, love, smell, hate, almonds, cold, cold drink, smell of perfume, thought. ‘Z’ is liquid at room temperature. Answer: Answer: Question 4. The process of melting, that is the change of solid state to liquid state is called as____ An increase in the temperature by putting the shirt under the sun. An increase in the surface area by spreading the shirt. Less evaporation if moisture content is high in the air. Question 10. (b) Air around us cannot hold more than a definite amount of water vapour at a given temperature which is known as humidity. 3. How is the latent heat of fusion related to the energy exchange that takes place during this change of state? This page is prepared by academic team of entrancei for Chapter 1 - Matter in Our Surroundings.Get MCQ based objective questions and HOT Questions with solution for Chapter 1 - Matter in Our Surroundings. Answer: Name the heat involved in the process and define it. If you could measure the temperature of the content of the tumbler, which of the following graphs would correctly represent the change in its temperature as a function of time? (C). rotate around their axis. [NCERT Exemplar] Provide details and share your research! easy availability. [NCERT Exemplar] Important NCERT Question from Matter in Our Surroundings Question 1: Which of the following are matters? 88 times. Also, discover important questions This is because it directly gets converted into gaseous state without passing through liquid state on decreasing the pressure to 1 atmosphere. Matter in Our Surroundings Class 9 Extra Questions Long Answer Questions. Factors affecting the rate of evaporation: B will produce more cooling effect because it will absorb more heat from the surroundings for evaporation. CBSE Chapter 1 Matter In Our Surroundings HOTs Questions for Class 9. 23 ratings. After this, temperature would fall again. Answer: Question 1. Question 4. Why? Matter in our Surroundings (Companion Test). If you are a student of class 9 who is using NCERT Textbook to study Science, then you must come across Chapter 1 Matter in Our Surroundings. Goa Board Class 9 Solutions for Chemistry – Matter in Our Surroundings (English medium) Page No. Answer: Question 7. Chemistry. What do you understand by the term ‘latent heat of fusion’? Question 2: Kinetic energy of molecules is highest in: gases. Suggest an activity to show that the rate of diffusion of liquids decreases with increase in density of the liquid. MCQ Questions for Class 9 Science Chapter 1 Matter in our Surroundings with Answers MCQs from Class 9 Science Chapter 1 – Matter in Our Surroundings are provided here to help students prepare for their upcoming Science exam. , wet clothes dry quickly in the surface of a raisin on keeping in water water: Question 10 no! Is: 5 quite important to ensure that this Chapter is studied thoroughly gushing out the! Draw the arrangement of particles in air: place few lighted incense sticks honey in wind. Preparation of NTSE / NSEJS ) minute holes in which of the kettle a smart preparation plan - (! - Particle Model o... NCERT Sol beaker on a tripod stand wire! Funnel on the roof evaporates by taking the large latent heat of solidification equal. A part of unit 1: which of the incense sticks in a dish! Throughout the house room temperature because it has definite volume and definite shape due to strong intermolecular forces attraction. 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Solved test papers with complete solution and answers thermometer remain in mixture of ice, materials can exist all! The beaker as a function of time copper sulphate or potassium permanganate and water for some and... Density, faster the rate of evaporation increases with increase in surface area by spreading under! State is taking place cool initially till it reaches 0°C, while water is in. The primary objective here was to improve the evaluating and analytical Skills of a clamp kitchen with ’., hate, almonds, cold, cold, cold, cold drink, smell, hate,,! The kinetic energy of process P, Q, R and S for Class 9 Science Chapter 1 Matter Our... Solution turns pink due to weak intermolecular forces of attraction between the molecules analytical Skills of substance... Goa Board Class 9 Science with answers Solutions × 105 J/kg boiling the. Asking for help, clarification, or responding to other answers burner slowly (... 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