MCQ Chapter 19 General Science Class 7 Maharashtra Board MCQ For All Chapters – General Science Class 7Properties of a Magnetic Field 1. Where are magnets commonly used according to the document?Only in industrial settingsIn our houses and surroundingsExclusively in scientific labsOnly in space explorationQuestion 1 of 202. In which direction does a freely suspended magnet settle?East-WestNorth-SouthUp-DownRandom directionQuestion 2 of 203. What are the two ends of a magnet called?Positive and NegativeNorth and SouthTop and BottomLeft and RightQuestion 3 of 204. Why are the ends of a magnet named "North" and "South"?Due to their shapeBecause they align with Earth’s geographic polesBased on their colorDue to their sizeQuestion 4 of 205. Which metal is NOT mentioned as being used for making magnets?IronCobaltCopperNickelQuestion 5 of 206. What is Nipermag, as described in the document?A type of steel barAn alloy of iron, nickel, aluminium, and titaniumA magnetic field detectorA naturally occurring magnetQuestion 6 of 207. What is Alnico?A type of iron filingA magnetic alloy of aluminium, nickel, and cobaltA method of magnetizationA tool for measuring magnetic fieldsQuestion 7 of 208. What happens when a steel bar is magnetized using the single touch method?It becomes permanently magneticIt develops weak magnetism that lasts a short timeIt repels iron filingsIt loses all magnetic propertiesQuestion 8 of 209. In the single touch method, which pole of the bar magnet is dragged along the steel bar?South poleBoth polesNorth poleEither pole randomlyQuestion 9 of 2010. How many times should the single touch method be repeated to magnetize a steel bar?5-10 times15-20 times25-30 times50 timesQuestion 10 of 2011. What is the key difference between the single touch and double touch methods?The single touch method uses two magnetsThe double touch method produces longer-lasting magnetismThe double touch method is weakerThe single touch method uses opposite polesQuestion 11 of 2012. In the double touch method, how are the two bar magnets positioned?Both north poles at the centerBoth south poles at the centerOpposite poles at the centerRandom poles at the endsQuestion 12 of 2013. Why does a freely suspended magnet settle in the north-south direction?Due to gravitational pullBecause Earth acts as a gigantic magnetDue to air pressureBecause of its weightQuestion 13 of 2014. Who provided a scientific explanation for a magnet’s north-south alignment?Michael FaradayWilliam GilbertIsaac NewtonAlbert EinsteinQuestion 14 of 2015. What did William Gilbert use to demonstrate Earth’s magnetism?A steel barA spherical magnet made from a magnetic rockIron filingsA compass needleQuestion 15 of 2016. Which pole of a spherical magnet is attracted to the north pole of a bar magnet?North poleSouth poleBoth polesNeither poleQuestion 16 of 2017. Where is the south pole of Earth’s magnetic field located?Near the geographic south poleNear the geographic north poleAt the equatorIn the center of EarthQuestion 17 of 2018. What will a magnetic needle show at the geographic north pole?It points eastIt points straight downIt spins randomlyIt points southQuestion 18 of 2019. In the magnetic needle experiment with a pot of water, what direction does the needle point?East-WestNorth-SouthUp-DownRandomlyQuestion 19 of 2020. Why does a magnetic needle not settle parallel to the ground?Due to Earth’s rotationBecause of the angle of Earth’s magnetic fieldDue to air resistanceBecause of its weightQuestion 20 of 20 Loading...
Leave a Reply