Everyday Science Quiz Test 7 Start your test Q1. Which one of the following sets of colour combinations is added in colour vision in TV? Red, green and blue Orange, black and violet White, red and yellow Yellow, green and blue None Q2. A train goes past a railway station at a high speed. A young boy standing on the edge of the platform is likely to Remain unaffected Fall away from the train Fall towards the train Fall away from or towards the train depending upon the speed None Q3. Water is a highly effective coolant for a car engine because Water is good conductor of heat Water has very high specific heat capacity Water boils at a comparatively high temperature Evaporation of water produces lot of cooling None Q4. Scalding with steam is more severe than scalding by boiling water because Steam can penetrate the skin Steam is at a higher temperature Steam contains more energy than boiling water Steam is at a higher pressure None Q5. In order to prevent the corrosion of iron pipes they are often coated with a layer of zinc. This process is termed Electroplating Annealing Galvanisation Vulcanisation None Q6. The cracking sound heard when dry hair is combed with a hard rubber comb is due to The hair barging against the charged comb Small electric sparks The rubbing of the comb with the hair None of the above None Q7. Detergents dissolved in water help in cleaning clothes by Increasing the temperature of water Reacting chemically with dirt Reducing the surface tension of water Dissolving dirt None Q8. The absorption of ink by blotting paper involes Viscosity of ink Capillary action phenomenon Diffusion of ink through the blotting Siphon action None Q9. Materials for rain-proof coats and tents owe their water proof properties to Surface Tension Viscosity Specific Gravity Elasticity None Q10. A satellite moving round the earth with a uniform speed has An acceleration motion No acceleration at all Uniform acceleration Uneven acceleration None Q11. General Knowledge Fuse wire is made of 63% tin and 37% lead 63% lead and 37% tin 63% tin and 37% aluminium 63% lead and 37% aluminium None Q12. Which one of the following is the main culprit in the thinning of Ozone layer in the earth's stratosphere? Carbon dioxide Chlorofluorocarbons Nitrogen oxides Methane None Q13. Steering of a car involves A single force Two forces acting in the same direction Two forces acting along different lines and in opposite direction A pair of forces acting along the same line and in opposite direction None Q14. The property by virtue of which metals can be beaten into thin sheets is known as Ductility Malleability Conductivity Density None Q5. The sky appears blue because the earth's atmosphere Scatters blue light Reflects blue light Transmits blue light Has actual blue cover None Q16. A tight-rope walker carries a long pole which he holds across his body. The purpose of this pole is to Prop him up if he falls Spread out his weight and reduce the pressure on the rope Add extra weight to keep the rope tightly stretched To keep the centre of gravity always vertically above the rope None Q17. When water is filled in a bottle and is allowed to freeze, the bottle breaks because Water expands on freezing Bottle contracts at freezing point Temperature outside the bottle is less than that inside the bottle None of these None Q8. During a total solar eclipse there is most likely to be A decrease in the rate of photosynthesis An increase in the rate of photosynthesis A decrease in the rate of respiration No effect on either photosynthesis or respiration None Q19. Heating element of an electric heater is made up of Tungsten Graphite Chromium Nichrome None Q20. In an oil lamp, the oil rises up in the wick due to Capillary action Atmospheric pressure Viscosity of oil Change in temperature None Time's upTime is Up!
