Sugar is solid. Which condition out of the following increase the evaporation of water? Practice Now. The property to flow is unique to fluids. (2) The volume of liquids increases on boiling and the vaporisation curve shows the variation of the boiling point of a liquid with pressure and expands the equilibrium state between liquid and vapour phase. Adding salt to water results in a phenomenon called boiling point elevation. Question 6: Force that binds particles of matter together are called. The liquid is a substance with indefinite shape. Which of the following does not affect rate of evaporation? Which condition out of the following increase the evaporation of water? Online Test of Chapter 1 Matter in our Surrounding 2 Science| Class 9th Questions : 1. Boiling is the process by which a liquid turns into a vapor when it is heated to its boiling point. interparticle space. The molecules are in constant, random motion and frequently collide with each other and with the walls of any container.​. a. J g-1 Gases have weakest force of attraction between their particles. - Mists are frequent over mountains as the rising warm air up the slopes meets a cold surface. Van der Waal's forces include attraction and repulsion between atoms, molecules, and surfaces, as well as other intermolecular forces. (b) Particles of water … Hence you can not start it again. But when ice melts it forms liquid. At higher pressures, it takes more than 540 calories for every gram to vaporize. When we increase the temperature, the molecules of liquid move away from each other due to expansion. The matter is composed of small constituent parts. Aseel is an important native chicken breed of India, known for its martial qualities (aggressive fighting abilities), pugnacity, and majestic gait. - In mist visibility is more than one kilometer but less than two kilometres. CBSE Papers, Questions, Answers, MCQ ... Blog provides NCERT solutions, CBSE, NTSE, Olympiad study material, model test papers, important Questions and Answers asked in CBSE examinations. (d) increasing the temperature and decreasing the pressure, 9. From the graph it can be concluded that :-, During melting and boiling temperature does not rise, Process of boiling takes longer time than the process of melting, Kelvin is the SI unit of Temperature. Practice Now. The change from a liquid phase to a gaseous phase occurs when the vapor pressure of the liquid is equal to the atmospheric pressure exerted on the liquid. (d) heat supplied to convert solid into its liquid state. (1) Boiling point of a liquid increases with increase in temperature. matter in our surroundings quiz. Matter is anything which occupies space. (c) Only liquids show fluidity 10-10 m The SI unit of latent heat of vaporisation is. The interparticle forces of attraction are weakest in. b. kJ kg-1 (1) Some sugar can be added to a full glass of water without causing overflow. The temperature at which Celsius and Fahrenheit scales show the same reading is :-, Use formula, (d)Less exposed surface area of water, 3. This mock test of Matter In Our Surroundings for Class 9 helps you for every Class 9 entrance exam. 10. (a) increasing the pressure Solid CO2 is called dry ice. (c) decreasing the temperature and increasing the pressure Latent heat of fusion is (b) heat supplied to decrease the temperature d. 10-9 m, 7.           F = temperature in °F (c) Adding common salt to water Practice Now. (a) The molecules in a solid vibrate about a fixed … Students can practice Free online mock tests for Class 9 Chemistry for all topics|chapters. 1.8*k = k - 32° The pre foundation courses offered by us are prepared by best faculties from all over India. Solution : Force that binds particles of matter together are called intermolecular force. Description. C. 10-11 m (d) hydrogen gas, 4. Humidity is the amount of water vapour present in the atmosphere. (a) water The effect is quite small. The latent heat of vaporization of water is 540 cal/g/°C and the latent heat of fusion of ice is 80 cal/g/°C. EduRev is a knowledge-sharing community that depends on everyone being able to pitch in when they know something. none of these. Diffusion, evaporation, compression of gases; Evaporation, compression of gases, solubility; Evaporation, diffusion, expansion of gas CBSE Class 9 - CH1 - MATTER IN OUR SURROUNDINGS (MCQs) MATTER IN OUR SURROUNDINGS. (a) heat supplied to increase the temperature You must sign in or sign up to start the quiz. a. water(l) Vedantu is a premier learning platform that provides all the necessary study material for exam preparation including sample papers, NCERT Solutions, important questions, revision notes, etc. (1) and (2) are true and (2) explains (1), (1) and (2) are true but (2) does not explain (1). 9th CBSE Science Matter in Our Surr.. The solved questions answers in this Matter In Our Surroundings quiz give you a good mix of easy questions and tough questions. (a) Particles of ice at 0 °C. Dissolving 60 g of salt in a litre of water only raises the boiling point from 100.0 deg C to 100.5 deg C. Mixture of butane, ethane and propane is called :-. Therefore, Particles of Hydrogen gas can move freely. a. water(l) b. ethanol(l) c. CO2(g) d. sugar(s) 2. This mock test of Matter In Our Surroundings - Olympiad Level MCQ, Class 9, Science for Class 9 helps you for every Class 9 entrance exam. MCQ Questions for Class 9 Science: Ch 1 Matter in our Surroundings. as C = F = k(assume) Water at 0 C can absorb heat energy only to attain the room temperature. Corresponding temperature in the Kelvin scale for 104° F is :-, When the vapor pressure of a liquid is equal to its atmospheric pressure, then it:-. The Triple Point of water is 0.01 Degree Centigrade.That is 273.16 Kelvin. ... Matter In Our Surroundings (Unit Test Paper) Matter in our surroundings . Foot-and-mouth disease (FMD) is a severe, highly contagious viral disease of cattle and swine. Class 9 Which one of the following is the indigenous breed of chickens :-. The SI unit of latent heat of vaporisation is 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. 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