Grade 8- Formative
Quiz by Ipsita Shaw
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20 questions
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- Q11) 5 joule= _________cal2.24.20.241.230s
- Q22) Identify the correct transfer of heat energy from the following examples.Heat energy from a hot drink is transferred to cold hands.Heat energy is transferred from stirrer to hot soupAn ice cube loses heat energy to a hot cup of tea as it meltsHeat energy from the refrigerator is transferred to a hot pie in the refrigerator.30s
- Q33) Substance A has a higher specific heat capacity than substance B.? If both have equal mass then which of the two would require more heat energy for the same rise in temperature.Substance BSubstance AAnswer depends on the density of each substanceBoth require the same amount of heat.30s
- Q44) On heating a kettle of water on a stove, the hot water at the bottom of the kettle begins to rise and the cooler water at the top will sink to the bottom. This is an example of:RadiationAll of the aboveConductionConvection30s
- Q55) Which is true regarding solids?They are compressibleThe intermolecular space is largeThe intermolecular force of attraction is strongThe molecules move freely within the solid30s
- Q66) The heat gained or lost by a body during a change of state is the product of its _______ and the specific latent heat.Change in temperatureWeightMassVolume30s
- Q77) Which among the following is INCORRECT regarding the use of detergent while washing clothes?It is added to decrease cohesive force between water moleculesIt is added to decrease adhesive force between water and clothIt is added to increase adhesive force between water and clothIt is added to decrease surface tension30s
- Q88) The force of attraction between two like molecules is called as______Electrostatic forceCohesive forceGravitational forceAdhesive force30s
- Q99) Ray of light is incident obliquely at the water-air interface, then the refracted ray will _____Move along the normalBend away from the normalBe parallel to the normalBend towards the normal30s
- Q1010) When a glass prism causes dispersion of white light, the colour deviated least is ________.VioletGreenYellowRed30s
- Q1111) The band of seven colors obtained due to dispersion of white light is called as______.Dispersed bandColour bandSpectrumNewton's band30s
- Q1212) The angle through which a ray of light turns on passing through a prism is called ________.Angle of deviationAngle of reflectionAngle of incidenceAngle of emergence30s
- Q1313) Rainbow is an example of which of the following phenomena of light?Lateral inversionDispersionReflectionRefraction30s
- Q1414) If the angle of incidence is 0 degree then angle of refraction will be______.45 degree60 degree0 degree90 degree30s
- Q1515) Identify the type of lens.BiconvexConcavo convexBiconcaveConvexo concave30s
