MCQ Chapter 19 General Science Class 8 Maharashtra Board MCQ For All Chapters – General Science Class 8Life Cycle of Stars 1. What is the first stage in the life cycle of a star?Red giantProtostarWhite dwarfNeutron starQuestion 1 of 202. What force is responsible for the formation of a protostar from a nebula?Electromagnetic forceGravityNuclear forceCentripetal forceQuestion 2 of 203. Which process powers a star during its main sequence phase?Nuclear fissionNuclear fusionChemical combustionRadiation emissionQuestion 3 of 204. Which element is the primary fuel for a main sequence star?HeliumOxygenCarbonHydrogenQuestion 4 of 205. What happens to a star when its hydrogen fuel runs out?It immediately becomes a black holeIt expands into a red giantIt remains unchangedIt explodes into a supernovaQuestion 5 of 206. What will the Sun eventually become?Black holeNeutron starWhite dwarfSupernovaQuestion 6 of 207. What determines the ultimate fate of a star?Its brightnessIts massIts colorIts distance from EarthQuestion 7 of 208. What is the final stage of a high-mass star?White dwarfRed giantBlack hole or neutron starBrown dwarfQuestion 8 of 209. What is the fate of a low-mass star?It becomes a black holeIt explodes in a supernovaIt turns into a white dwarfIt forms a red supergiantQuestion 9 of 2010. What element is the heaviest that can be formed inside a star before a supernova?HydrogenOxygenCarbonIronQuestion 10 of 2011. Which event marks the explosive end of a massive star’s life?Red giant phaseSupernovaWhite dwarf formationFormation of a brown dwarfQuestion 11 of 2012. What is left behind after a supernova?A planetary nebulaA neutron star or black holeA white dwarfA brown dwarfQuestion 12 of 2013. What is the boundary of a black hole called?Event horizonSingularityAccretion diskNeutron shellQuestion 13 of 2014. How do black holes form?From the explosion of a white dwarfFrom the collapse of a massive starFrom the collision of two neutron starsFrom the cooling of a red giantQuestion 14 of 2015. What is a neutron star?A star that has cooled down completelyA high-energy star in its early stageA dense remnant of a supernovaA failed star that never ignitedQuestion 15 of 2016. Which of the following stars is the hottest?Red giantWhite dwarfBlue giantRed dwarfQuestion 16 of 2017. What type of radiation is often detected from neutron stars?Gamma raysX-raysRadio wavesAll of the aboveQuestion 17 of 2018. What happens when two neutron stars collide?A supernovaA planetary nebulaA black hole may formA new main-sequence starQuestion 18 of 2019. Which type of star is the most common in the universe?Red dwarfsWhite dwarfsBlue giantsNeutron starsQuestion 19 of 2020. What happens when a white dwarf cools completely?It becomes a neutron starIt forms a black holeIt becomes a black dwarfIt explodes into a supernovaQuestion 20 of 20 Loading...
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