2Which metal is liquid at room temperature?AMercuryBSodiumCAluminiumDLeadView AnswerDiscussWorkspaceReportSaveEasy
4Baking soda is:ACalcium carbonateBSodium bicarbonateCSodium hydroxideDSodium chlorideView AnswerDiscussWorkspaceReportSaveEasy
5Which element has the atomic number 6?ABoronBNitrogenCOxygenDCarbonView AnswerDiscussWorkspaceReportSaveMedium