6Humidity is the amount of:ACO₂ in airBOxygen in waterCSalt in waterDWater vapour in airView AnswerDiscussWorkspaceReportSaveEasy
7One mole of an ideal gas at STP (0 °C, 1 atm) occupies:A11.2 litresB22.4 litresC1 litreD24.8 litresView AnswerDiscussWorkspaceReportSaveEasy
8Standard heat of reaction is measured at:A25 °C and 1 atm (standard state)BAny temperatureC0 °C and 10 atmD100 °CView AnswerDiscussWorkspaceReportSaveEasy
9Excess air in combustion is:APure oxygenBAir that is not usedCAir in the stack onlyDAir supplied beyond the theoretical (stoichiometric) requirementView AnswerDiscussWorkspaceReportSaveEasy
10What is the molecular weight of water (H = 1, O = 16)?A17B20C16D18View AnswerDiscussWorkspaceReportSaveMedium