12/15/2015 SSCAddaSSCCGLMockTest|OnlineTestSeries|Tier1,Tier2,LDC,FCI,CPO,MTS,CHSLQuiz:GeneralScienceQuizForSSCExams

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1.Saltsofwhichofthefollowingelementsprovidecolourstofireworks?(a)Zincandsulphur(b)Potassiumandmercury(c)Strontiumandbarium(d)Chromiumandnickel

2.Themetalalwaysfoundinfreestateis(a)Gold(b)Sodium(c)Silver(d)Copper

3.Themostabundantmetalintheearthscrustis(a)Magnesium(b)Aluminium(c)Calcium(d)Iron

4.Mostabundantelementontheearthscrustbyweightis(a)Oxygen(b)Iron(c)Silicon(d)Aluminium

5.Animportantconstituentofamalgamis(a)Al(b)Ag(c)Hg(d)Mg

6.WhichmethodisusedforthepurificationofBauxiteore?(a)Magneticseparation(b)Electrolysis(c)Leaching(d)Levigation

7.Gravityseparationprocessmaybeusedforconcentrationof(a)Calamine(b)Chalcopyrite(c)Haematite

12/15/2015 SSCAddaSSCCGLMockTest|OnlineTestSeries|Tier1,Tier2,LDC,FCI,CPO,MTS,CHSLQuiz:GeneralScienceQuizForSSCExams

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(d)Bauxite

8.Thesubstanceusedasanactivatorinfrothfloatationprocessis(a)Pineoil(b)Potassiumethylxanthate(c)Coppersulphate(d)SodiumCyanide

9.Inroasting(a)nometalimpuritiesareremoved(b)orebecomesporous(c)moistureisremoved(d)alltheabove

10.Inroastingtheoresaregenerallyconvertedinto(a)Metaloxides(b)Metals(c)Hydratedmetaloxides(d)Noneofthese

AnswersKey:1.(c)2.(a)3.(b)4.(a)5.(c)6.(c)7.(c)8.(c)9.(d)10.(a)