MCQ Chapter 12 Science Class 6 Maharashtra Board Simple Machines 1. What kind of machine is a bicycle?Simple machineComplex machineOnly a pulleyOnly an inclined planeQuestion 1 of 202. What type of machine is a staircase?WedgeLeverInclined planePulleyQuestion 2 of 203. What machine is used to lift bricks to the top of a tall building?LeverPulleyWedgeInclined planeQuestion 3 of 204. What type of simple machine is a nutcracker?First-order leverSecond-order leverThird-order leverPulleyQuestion 4 of 205. What happens when the effort arm of a lever increases?More force is requiredLess force is requiredThe lever stops workingThe fulcrum movesQuestion 5 of 206. What simple machine is used in a lemon squeezer?First-order leverSecond-order leverThird-order leverPulleyQuestion 6 of 207. What happens when a knife becomes blunt?It becomes more effectiveIt cannot cut efficientlyIt requires less effort to useIt becomes sharper automaticallyQuestion 7 of 208. What is the function of an axle in a wheel and axle system?To stop the wheel from rotatingTo make rotation smoother and easierTo increase frictionTo decrease the size of the wheelQuestion 8 of 209. What simple machine is used in a pair of scissors?First-order leverSecond-order leverThird-order leverPulleyQuestion 9 of 2010. What type of machine is a tongs?First-order leverSecond-order leverThird-order leverInclined planeQuestion 10 of 2011. How does a pulley make lifting easier?By increasing the weightBy allowing force to be applied in a convenient directionBy decreasing the length of the ropeBy increasing frictionQuestion 11 of 2012. What is the role of friction in machines?It helps them function betterIt causes wear and tearIt increases efficiencyIt prevents movementQuestion 12 of 2013. Why are bicycle chains oiled?To increase frictionTo reduce friction and ensure smooth movementTo make the bicycle heavierTo rust the chainQuestion 13 of 2014. What kind of lever is a seesaw?First-order leverSecond-order leverThird-order leverNone of the aboveQuestion 14 of 2015. What is the Archimedes' screw used for?Cutting woodLifting waterIncreasing frictionDecreasing weightQuestion 15 of 2016. Why do some mountain roads have winding paths?To increase travel timeTo act as an inclined plane and make climbing easierTo reduce the distanceTo increase difficultyQuestion 16 of 2017. What type of machine is a crane?LeverPulleyWedgeInclined planeQuestion 17 of 2018. Why do we need to cover machines when not in use?To decorate themTo prevent dust and rustTo increase weightTo stop electricityQuestion 18 of 2019. What is the main advantage of simple machines?They require less effortThey increase the weight of objectsThey make tasks harderThey only work with electricityQuestion 19 of 2020. What type of simple machine is a screwdriver?LeverWheel and axlePulleyWedgeQuestion 20 of 20 Loading...
Leave a Reply