Home Elements Metals & Compound Test Preparation Online Mcqs Elements Metals & Compound Test Preparation Online Mcqs Elements Metals & Compound Test Preparation Online Mcqs With Answer Start Below 1234567891011121314151617181920Show paginator Hide paginatorBasic Science 1. Which one of the following is the best conductor of electricity?Sea WaterBoiled WaterRain WaterOrdinary WaterQuestion 1 of 20 Loading... 2. Water has maximum density at:0°C-1°C4°C100°CQuestion 2 of 20 Loading... 3. Which one of these is used in beauty parlours for hair setting?SulphurPhosphorusSiliconeChlorineQuestion 3 of 20 Loading... 4. Which of the following is the lightest metal?SilverMercuryLithiumLeadQuestion 4 of 20 Loading... 5. Which of the following is used in pencils?CharcoalPhosphorousGraphiteSiliconQuestion 5 of 20 Loading... 6. Stainless steel is an alloy of:Iron, chromium and nickelIron, carbon and nickelIron and manganeseIron and zincQuestion 6 of 20 Loading... 7. Bio gas contains mainly:SodiumMethaneButaneCarbon DioxideQuestion 7 of 20 Loading... 8. The gas used to extinguish fire is:NitrogenNeonCarbon DioxideOxygenQuestion 8 of 20 Loading... 9. Most soluble in water is:SulphurCamphorCommon SaltSugarQuestion 9 of 20 Loading... 10. Which of the following is an element?RubyEmeraldSapphireDiamondQuestion 10 of 20 Loading... 11. Balloons are filled with:HeliumOxygenNitrogenArgonQuestion 11 of 20 Loading... 12. Permanent hardness of water can be removed by adding:ChlorinePotassiumNone of theseWashing SodaQuestion 12 of 20 Loading... 13. Diamond is an allotropic form of:GermaniumSiliconSiliconCarbonQuestion 13 of 20 Loading... 14. From which mineral is radium obtained?PitchblendeRutileHaematiteLimestoneQuestion 14 of 20 Loading... 15. The most abundant metal in the earth's crust is:SiliconCopperIronZincQuestion 15 of 20 Loading... 16. The most malleable metal is:SodiumAluminiumGoldSilverQuestion 16 of 20 Loading... 17. Which metal is used in storage batteries?TinCopperIronLeadQuestion 17 of 20 Loading... 18. Which form of phosphorous is used in safety matches?Red phosphorousWhite phosphorousYellow phosphorousBlack phosphorousQuestion 18 of 20 Loading... 19. Which is laughing gas?Carbon dioxideSulphur dioxideNitrous oxideCarbon Mono-oxideQuestion 19 of 20 Loading... 20. The element present in the largest amount in rocks and minerals is:AluminiumHydrogenSiliconCarbonQuestion 20 of 20 Loading... Loading... Related Study Posts:Who is Who Test Preparation Mcqs OnlineUrdu Test Preparation Online McqsTESCO Jobs Online NTS Test Preparation McqsFIA ASI Sub Inspectors Job 2022 OTS Test Preparation Mcqs…PPSC Lecturer Test Preparation Online McqsMDCAT Test Preparation Online Related Syllabus McqsFPSC Jobs 2022 Online Test Preparation McqsASF Jobs 2022 Written Test Preparation Online McqsIB Pakistan NTS Jobs 2022 Online Test Preparation McqsRescue 1122 Jobs NTS Test Preparation Mcqs