9th standard Science Chapter-2 November 30, 2020December 26, 2020wefru 9th Standard Science quiz Chapter-2 0 Created on November 30, 2020 By wefru 9thStandard Science Chapter 2 TEST YOUR SKILLS 1 / 10 Q.11 Which of the following phenomena always results in the cooling effect? Condensation Evaporation Sublimation None of these 2 / 10 Q.12 Which of the following cannot be considered a form of matter? Atom Water Humidity Electron 3 / 10 Q.13 Which of the following causes the temperature of a substance to remain constant while it is undergoing a change in its state? Latent heat Lattice energy Loss of heat None of these 4 / 10 Q.14 Which of the following statement is correct? Materials existing as liquids at room temperature have their melting and boiling points lower than that of room temperature. The phenomenon involving the transition of a substance from solid to liquid state is called sublimation. To convert a temperature on the Celsius scale to Kelvin scale, subtract 273 from the given temperature The density of ice is less than that of water. 5 / 10 Q.15 Which of the following statement is not true regarding the characteristic of matter? Particles of a matter are randomly moving in all directions. Kinetic energy of the particles increases with a rise in temperature Kinetic energy of the particles of all maters remains the same at a particular temperature. Particles of matter diffuse into each other on their own. 6 / 10 Q.16 What is the name of the metal which exists in liquid state at room temperature? Sodium Potassium Mercury Bromine 7 / 10 Q.17 When the liquid is spun rapidly, the denser particles are forced to the bottom and the lighter particles stay at the top. This principle is used in: Centrifugation Fractional distillation Evaporation Tunneling 8 / 10 Q.18 What is the name of the metal which exists in liquid state at room temperature? Mercury Bromine Sodium Potassium 9 / 10 Q.19 Which of the following elements is not a metalloid? Boron Silicon Germanium Tungsten 10 / 10 Q.20 If we put camphor in an open container, its amount keeps on decreasing due to the phenomenon of Evaporation Precipitation Condensation Sublimation Your score isThe average score is 0% LinkedIn Facebook Twitter VKontakte 0% Restart quiz