Matter in Our Surroundings (हमारे आस पास के पदार्थ) Ch(1) Practice Quiz in Hindi Part – 1 || Class 9 Science Practice Quizzes in English Posted on February 28, 2025February 28, 2025 by Anshul Gupta0% 0 votes, 0 avg 5 Matter in Our Surroundings (हमारे आस पास के पदार्थ) Ch(1)Practice Quiz in Hindi Part – 1 || Class 9 Science Practice Quizzes in English 1 / 201. Which of the following is NOT a factor affecting evaporation? A. Humidity B. Temperature C. Pressure D. Surface area Explanation: The rate of evaporation is affected by temperature, surface area, humidity, and wind speed, but not pressure.2 / 202. Which of the following is NOT matter? A. Sunlight B. Stone C. Water D. Air Explanation: Sunlight is a form of energy, not matter. Matter is anything that occupies space and has mass.3 / 203. Why does a desert cooler cool better on a hot dry day? A. The air is dry and can hold more water vapor B. The air is hot and can hold less water vapor C. The air is dry and can hold less water vapor D. The air is already saturated with water vapor Explanation: A desert cooler works by evaporating water, which absorbs heat from the air. On a hot dry day, the air is dry and can hold more water vapor, so the rate of evaporation is higher, resulting in better cooling.4 / 204. Which state of matter has the highest kinetic energy? A. Liquid B. Solid C. Gas D. All have the same kinetic energy Explanation: Gas particles have the highest kinetic energy because they move about randomly at high speeds.5 / 205. Which of the following factors does NOT affect the rate of evaporation? A. Pressure B. Temperature C. Humidity D. Surface area Explanation: The rate of evaporation is affected by temperature, surface area, humidity, and wind speed, but not pressure.6 / 206. What is the SI unit of volume? A. Millilitres B. litre C. Cubi cmeter D. Cubic litre Explanation: The SI unit of volume is cubic meter (m³).7 / 207. The intermixing of particles of two different types of matter on their own is called: A. Sublimation B. Evaporation C. Condensation D. Diffusion Explanation: Diffusion is the intermixing of particles of two different types of matter on their own.8 / 208. Which of the following is an example of sublimation? A. Dew forming on grass B. Water boiling into steam C. Ice melting into water D. Camphor disappearing into air Explanation: Camphor undergoes sublimation, changing directly from solid to gas without changing into the liquid state.9 / 209. Which state of matter has a definite shape and volume? A. Solid B. None of the above C. Gas D. Liquid Explanation: Solids have a definite shape, distinct boundaries, and fixed volumes.10 / 2010. What happens to the particles of matter when it is heated? A. They attract each other more strongly B. They slow down C. They stop moving D. Their kinetic energy increases Explanation: When matter is heated, the particles gain kinetic energy and start vibrating with greater speed.11 / 2011. Which of the following is NOT a characteristic of particles of matter? A. They have space between them B. They are continuously moving C. They are always at rest D. They attract each other Explanation: Particles of matter are always moving and are never at rest.12 / 2012. Why do we see water droplets on the outer surface of a glass containing ice-cold water? A. The water vapor in the air condenses on the cold surface B. The water vapor in the air evaporates from the cold surface C. The water inside the glass is leaking D. The water inside the glass is sweating Explanation: The water vapor present in the air, on coming in contact with the cold glass of water, loses energy and gets converted to liquid state, which we see as water droplets.13 / 2013. What type of clothes should we wear in summer? A. Cotton clothes B. Woollen clothes C. Leather clothes D. Silk clothes Explanation: Cotton, being a good absorber of water, helps in absorbing sweat and exposing it to the atmosphere for easy evaporation, which keeps us cool in summer.14 / 2014. What happens to the particles of a solid when it melts into a liquid? A. They stop moving B. They become smaller C. They get closer together D. They move farther apart Explanation: When a solid melts, the particles gain kinetic energy and move farther apart, changing into the liquid state.15 / 2015. What is the SI unit of mass? A. Newton B. Kilogram C. Pound D. Gram Explanation: The SI unit of mass is kilogram (kg).16 / 2016. The process of a gas changing directly into a solid is called: A. Condensation B. Sublimation C. Evaporation D. Deposition Explanation: Deposition is the direct change of gas to solid without changing into the liquid state.17 / 2017. What is the boiling point of water in Kelvin scale? A. 273 K B. 373 K C. 100 K D. 0 K Explanation: The boiling point of water is 100°C, which is equal to 373 K.18 / 2018. What is the process of changing a liquid into a gas called? A. Vaporization B. Sublimation C. Deposition D. Condensation Explanation: Vaporization is the process of changing a liquid into a gas.19 / 2019. Why does our palm feel cold when we put some petrol or perfume on it? A. Petrol and perfume absorb heat from our palm B. Petrol and perfume are cold liquids C. Petrol and perfume release heat into our palm D. Petrol and perfume react with our skin Explanation: Petrol and perfume evaporate quickly, absorbing heat energy from our palm and causing it to feel cold.20 / 2020. Why does our palm feel cold when we put some acetone on it? A. Acetone is a cold liquid B. Acetone absorbs heat from our palm C. Acetone releases heat into our palm D. Acetone reacts with our skin Explanation: Acetone evaporates quickly, absorbing heat energy from our palm and causing it to feel cold.Please insert your information to see your ranking अपनी Ranking जानने के लिए कृपया अपनी जानकारी भरे NamePhone Number Your score isThe average score is 51% 0% Restart quiz Category: Class 9 Science Quizzes in English
