11Which gas is used in filling electric bulbs?ACarbon dioxideBOxygenCArgonDHydrogenView AnswerDiscussWorkspaceReportSaveEasy
12Bleaching powder is chemically:ACalcium sulphateBCalcium carbonateCCalcium oxychlorideDSodium hypochloriteView AnswerDiscussWorkspaceReportSaveMedium
13The chemical name of washing soda is:ASodium hydroxideBCalcium carbonateCSodium carbonateDSodium bicarbonateView AnswerDiscussWorkspaceReportSaveMedium
15Baking soda is:ASodium hydroxideBSodium chlorideCSodium bicarbonateDCalcium carbonateView AnswerDiscussWorkspaceReportSaveEasy