MCQ Chapter 12 Science Class 6 Maharashtra Board Simple Machines 1. What are machines used for?Reducing effort and saving timeMaking tasks more complexIncreasing manual laborIncreasing effortQuestion 1 of 202. What are simple machines?Machines with multiple complex partsMachines that require electricityMachines with one or two simple partsMachines that cannot break downQuestion 2 of 203. What is an inclined plane?A horizontal surfaceA flat surface tilted at an angleA machine with gearsA type of pulleyQuestion 3 of 204. Why is an inclined plane useful?It reduces the force needed to lift an objectIt increases the weight of an objectIt decreases frictionIt makes lifting impossibleQuestion 4 of 205. What happens when a screw is fitted into wood?It moves in easily due to its inclined threadIt does not fit at allIt requires extreme forceIt functions like a pulleyQuestion 5 of 206. What is a wedge?A tool made by joining two inclined planesA type of pulleyA machine with gearsA circular objectQuestion 6 of 207. What is an example of a wedge?A bicycleA knifeA wheelA pulleyQuestion 7 of 208. What is a lever?A machine that rotates automaticallyA simple machine with a fulcrum, effort, and loadA machine that increases effortA device that cannot be used for liftingQuestion 8 of 209. What is the fulcrum in a lever?The point where force is appliedThe point where weight is placedThe fixed support on which the lever rotatesThe effort appliedQuestion 9 of 2010. What is the load in a lever?The object being liftedThe point of rotationThe applied forceThe length of the leverQuestion 10 of 2011. What is the effort in a lever?The force applied to lift the loadThe point of supportThe weight being liftedThe angle of movementQuestion 11 of 2012. Which of the following is a lever of the first order?NutcrackerTongsSeesawWheelbarrowQuestion 12 of 2013. In a second-order lever, what is in the middle?EffortLoadFulcrumNone of the aboveQuestion 13 of 2014. Which of the following is a lever of the second order?ScissorsBottle openerTongsKnifeQuestion 14 of 2015. What is a pulley used for?Lifting loads with less effortIncreasing weightCutting objectsIncreasing frictionQuestion 15 of 2016. What is the function of a wheel and axle?Rotating an object with easeIncreasing frictionMaking objects heavierPreventing movementQuestion 16 of 2017. Why do traveler’s bags have wheels?To reduce effort in carryingTo make them heavierTo increase frictionTo stop movementQuestion 17 of 2018. What is the purpose of machine maintenance?To increase frictionTo ensure smooth functioning and longevityTo make machines break fasterTo decrease machine usageQuestion 18 of 2019. Why is lubrication important for machines?It reduces friction and wearIt makes machines dirtyIt increases resistanceIt stops movementQuestion 19 of 2020. What happens if machines are not maintained properly?They become inefficientThey work betterThey stop needing lubricationThey require less effortQuestion 20 of 20 Loading...
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