MCQ Chapter 15 Science Class 6 Maharashtra Board Fun with Magnets 1. What happens when the electric current is stopped in an electromagnet?Magnetism increasesMagnetism disappearsThe magnet becomes strongerThe magnet starts rotatingQuestion 1 of 202. Which scientist developed the technique of producing electricity using a magnet?Isaac NewtonMichael FaradayAlbert EinsteinThomas EdisonQuestion 2 of 203. What is the main advantage of a maglev train?It uses dieselIt moves without frictionIt is the slowest trainIt runs on woodQuestion 3 of 204. What happens when a magnet is hammered or thrown?It becomes strongerIt loses magnetismIt changes colorIt gains new polesQuestion 4 of 205. What is a magnet keeper used for?To store magnetismTo protect a magnetTo create a new magnetTo weaken magnetismQuestion 5 of 206. Which shape is NOT commonly used for magnets?BarHorseshoeSphericalRingQuestion 6 of 207. What kind of magnet is used in a fridge door?Temporary magnetPermanent magnetElectromagnetNatural magnetQuestion 7 of 208. What is the purpose of a magnetic strip in credit cards?To display the cardholder’s nameTo store informationTo make the card heavierTo prevent bendingQuestion 8 of 209. What will happen if a compass is placed near a strong magnet?It will spin randomlyIt will point northIt will disappearIt will stop working permanentlyQuestion 9 of 2010. What happens when a magnet is brought close to a needle?The needle becomes magneticThe needle meltsThe needle disappearsThe needle becomes non-magneticQuestion 10 of 2011. How can the strength of an electromagnet be increased?Using a longer wireIncreasing the electric currentReducing the number of coilsUsing plastic wireQuestion 11 of 2012. What is the function of a magnet in a crane?To lift magnetic materialsTo generate electricityTo produce soundTo create heatQuestion 12 of 2013. What type of energy is magnetism?ElectricalMechanicalChemicalMagnetic energyQuestion 13 of 2014. What happens when opposite poles of a magnet are brought together?They repel each otherThey attract each otherThey break into piecesThey lose magnetismQuestion 14 of 2015. What is a magnet made from nickel, cobalt, and iron called?LodestoneAlnicoTemporary magnetMagnesiteQuestion 15 of 2016. How can a magnet be destroyed?By rubbing it with another magnetBy exposing it to high heatBy keeping it in waterBy polishing itQuestion 16 of 2017. Which of the following devices uses an electromagnet?CompassDoorbellWooden rulerPlastic bottleQuestion 17 of 2018. What happens to a magnet inside a coil of wire when electricity flows through it?It becomes strongerIt loses magnetismIt becomes an electromagnetIt disappearsQuestion 18 of 2019. What is a key difference between a permanent magnet and an electromagnet?A permanent magnet can be turned offAn electromagnet loses its magnetism when electricity is stoppedA permanent magnet is weakerAn electromagnet is naturally occurringQuestion 19 of 2020. What is the best way to store a bar magnet?Keep it near a heaterStore it in waterPlace it with a magnet keeperBreak it into piecesQuestion 20 of 20 Loading...
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