MCQ Chapter 19 General Science Class 8 Maharashtra Board MCQ For All Chapters – General Science Class 8Life Cycle of Stars 1. What is the age of the Sun?4.5 x 10⁶ years4.5 x 10⁹ years2 x 10⁸ years1.5 x 10⁷ yearsQuestion 1 of 182. How many stars are approximately in our galaxy?10⁶10⁹10¹¹10¹⁵Question 2 of 183. What is the radius of the Sun?5800 km695700 km2 x 10¹⁷ km9.5 x 10¹² kmQuestion 3 of 184. What fuels the energy generation in a star after hydrogen is exhausted?OxygenHeliumNitrogenCarbon Question 4 of 185. What is the temperature at the center of the Sun?5800 K1.5 x 10⁷ K695700 K4.5 x 10⁹ KQuestion 5 of 186. What is a light year?A measure of timeThe distance light travels in one yearThe speed of lightThe mass of a starQuestion 6 of 187. What type of star is the Sun classified as?SupergiantOrdinary starNeutron starBlack holeQuestion 7 of 188. What causes the evolution of stars?White dwarfNeutron starBlack holeRed giantat is the end stage of a star with mass between 8 and 25 MSun?Question 8 of 189. What is the density of a white dwarf compared to Earth?4-5 million years4-5 billion years2 x 10⁸ years8 minutesw long will it take for the Sun to become a red giant?Question 9 of 1810. What is the speed of light?300 km/s3,000 km/s30,000 km/s300,000 km/sQuestion 10 of 1811. What is the size of interstellar clouds?A few kilometersA few light yearsA few metersA few million kilometersQuestion 11 of 1812. What type of explosion marks the end of a star with mass between 8 and 25 MSun?NovaSupernovaHypernovaMicronovaQuestion 12 of 1813. What balances gravity in a neutron star?Electron pressureGas temperatureNeutron pressureLight pressureQuestion 13 of 1814. What will happen to Mercury and Venus when the Sun becomes a red giant?They will orbit fasterThey will be swallowedThey will cool downThey will become moons Question 14 of 1815. How long did the supernova explosion of 1054 A.D. remain visible during the day?2 days2 weeks2 years2 monthsQuestion 15 of 1816. What is the diameter of our galaxy?10¹⁵ km10¹⁸ km2 x 10¹⁷ km9.5 x 10¹² kmQuestion 16 of 1817. What is the period of rotation of the Milky Way?4.5 x 10⁹ years2 x 10⁸ years1.5 x 10⁷ years10¹¹ yearsQuestion 17 of 1818. What is used as a unit to measure the masses of other stars?Earth’s massSun’s mass (MSun)KilogramsLight yearsQuestion 18 of 18 Loading...
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