Chemistry Class # 9 Chapter # 1 Welcome to your Chemistry Class # 9 Ch # 1 Quiz # 1 1. Hydrogen gas isa mono atomic gasa mixture of hydrogen atomsa diatomic gas with each molecule made up of 2 atomsa diatomic atom made up of two molecules 2. Which one of the following is an example of triatomic molecule?O2CH4CO2NH3 3. The gram molecular mass of HNO3 is:981006360 4. Which of these molecule is not a compound?N2ON2NONO2 5. Which one of the following is equal to two moles of water (H2O)?1.084 × 1025 molecules6.022 × 1023 molecules1.204 × 1024 molecules1.806 × 1024 molecules 6. Which one of the following can be broken into simpler substances?AmmoniaOxygenSulphuriron filling 7. Which one of the following is homogeneous mixture?smokeairfogsmog 8. Which one of the following compound has a both empirical and molecular formula identical?benzene (C6 H6 )hydrogen peroxide (H2 O2 )water (H2 O)glucose (C6H12 O6 ) 9. A compound contains:different kind of atoms mixed togetherthe same kind of atoms mixed togetherdifferent kinds of atoms chemically combined togetherthe same kind of atoms chemically mixed together 10. Which one of the following group consists of elements?Mercury, water Ammoniaiodine, tin, ironCopper, Aluminum, methaneCoal, smoke, fog 11. Anything that has mass and occupies space is calledEnergyVolumeMatterNone of these 12. A piece of matter in pure form is calledSubstanceGlassRubberMetal 13. The shortest name of an element is calledIsotopeSymbolAbbreviationValence 14. The symbol of Antimony isSbCuNaH 15. The chemical formula of Baking soda isNaOHNaClHClNaHCO3 Time is Up!