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{"type":"multi-choice","id":"76223","dataJson":{"key":0,"prompt":"Define the term \"Evaporation\".","options":[{"key":"0.9650753581988855","label":"The process by which a liquid is transformed into a gas or vapor.","value":"The process by which a liquid is transformed into a gas or vapor."},{"key":"0.4780713160417013","label":"The process of solidification in which a substance forms a crystalline solid from a liquid or a solid solution.","value":"The process of solidification in which a substance forms a crystalline solid from a liquid or a solid solution."},{"key":"0.5218870430249081","label":"The process that involves heating a mixture of substances to a temperature at which one of the components will vaporize.","value":"The process that involves heating a mixture of substances to a temperature at which one of the components will vaporize."},{"key":"0.18982606965013116","label":"The process of separating a solid from a liquid.","value":"The process of separating a solid from a liquid."},{"key":"0.41075026907118506","label":"The process of dissolving a substance in a solvent.","value":"The process of dissolving a substance in a solvent."}],"limitChoices":{"sameNumberAsCorrectAnswers":true},"validResponse":["The process by which a liquid is transformed into a gas or vapor."]}}
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{"type":"multi-choice","id":"76224","dataJson":{"key":1,"prompt":"What do we mean by the term “Crystallization”?","options":[{"key":"0.4342281917489711","label":"The process by which a liquid is transformed into a gas or vapor.","value":"The process by which a liquid is transformed into a gas or vapor."},{"key":"0.6728480692588121","label":"The process of solidification in which a substance forms a crystalline solid from a liquid or a solid solution.","value":"The process of solidification in which a substance forms a crystalline solid from a liquid or a solid solution."},{"key":"0.16297796591998948","label":"The process that involves heating a mixture of substances to a temperature at which one of the components will vaporize.","value":"The process that involves heating a mixture of substances to a temperature at which one of the components will vaporize."},{"key":"0.609091595853243","label":"The process of separating a solid from a liquid.","value":"The process of separating a solid from a liquid."},{"key":"0.7456735616482535","label":"The process of dissolving a substance in a solvent.","value":"The process of dissolving a substance in a solvent."}],"limitChoices":{"sameNumberAsCorrectAnswers":true},"validResponse":["The process of solidification in which a substance forms a crystalline solid from a liquid or a solid solution."]}}
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{"type":"multi-choice","id":"76225","dataJson":{"key":2,"prompt":"What is the best definition of “Distillation”?","options":[{"key":"0.9818075665452145","label":"The process by which a liquid is transformed into a gas or vapor.","value":"The process by which a liquid is transformed into a gas or vapor."},{"key":"0.24976121793239348","label":"The process of solidification in which a substance forms a crystalline solid from a liquid or a solid solution.","value":"The process of solidification in which a substance forms a crystalline solid from a liquid or a solid solution."},{"key":"0.4017121639239193","label":"The process that involves heating a mixture of substances to a temperature at which one of the components will vaporize.","value":"The process that involves heating a mixture of substances to a temperature at which one of the components will vaporize."},{"key":"0.1402349055469767","label":"The process of separating a solid from a liquid.","value":"The process of separating a solid from a liquid."},{"key":"0.9710085174938615","label":"The process of dissolving a substance in a solvent.","value":"The process of dissolving a substance in a solvent."}],"limitChoices":{"sameNumberAsCorrectAnswers":true},"validResponse":["The process that involves heating a mixture of substances to a temperature at which one of the components will vaporize."]}}
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{"type":"multi-choice","id":"76226","dataJson":{"key":3,"prompt":"What do we mean by “Simple distillation”?","options":[{"key":"0.8873531059293388","label":"The process by which a liquid is transformed into a gas or vapor.","value":"The process by which a liquid is transformed into a gas or vapor."},{"key":"0.7691153738030767","label":"The process of solidification in which a substance forms a crystalline solid from a liquid or a solid solution.","value":"The process of solidification in which a substance forms a crystalline solid from a liquid or a solid solution."},{"key":"0.6396360776916775","label":"The process that involves heating a mixture of substances to a temperature at which one of the components will vaporize. The two substances must have a large difference in boiling points.","value":"The process that involves heating a mixture of substances to a temperature at which one of the components will vaporize. The two substances must have a large difference in boiling points."},{"key":"0.7057148041393578","label":"The process of separating a solid from a liquid.","value":"The process of separating a solid from a liquid."},{"key":"0.1393103473195867","label":"The process that involves heating a mixture of substances to a temperature at which one of the components will vaporize. The two substances must have similar boiling points.","value":"The process that involves heating a mixture of substances to a temperature at which one of the components will vaporize. The two substances must have similar boiling points."}],"limitChoices":{"sameNumberAsCorrectAnswers":true},"validResponse":["The process that involves heating a mixture of substances to a temperature at which one of the components will vaporize. The two substances must have a large difference in boiling points."]}}
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{"type":"multi-choice","id":"76227","dataJson":{"key":4,"prompt":"What is meant by “Fractional distillation”?","options":[{"key":"0.8616638905678908","label":"The process by which a liquid is transformed into a gas or vapor.","value":"The process by which a liquid is transformed into a gas or vapor."},{"key":"0.03093366612666193","label":"The process of solidification in which a substance forms a crystalline solid from a liquid or a solid solution.","value":"The process of solidification in which a substance forms a crystalline solid from a liquid or a solid solution."},{"key":"0.46630215438896705","label":"The process that involves heating a mixture of substances to a temperature at which one of the components will vaporize. The two substances must have a large difference in boiling points.","value":"The process that involves heating a mixture of substances to a temperature at which one of the components will vaporize. The two substances must have a large difference in boiling points."},{"key":"0.20775202447163355","label":"The process of separating a solid from a liquid.","value":"The process of separating a solid from a liquid."},{"key":"0.4191301633916914","label":"The process that involves heating a mixture of substances to a temperature at which one of the components will vaporize. The two substances can have similar boiling points.","value":"The process that involves heating a mixture of substances to a temperature at which one of the components will vaporize. The two substances can have similar boiling points."}],"limitChoices":{"sameNumberAsCorrectAnswers":true},"validResponse":["The process that involves heating a mixture of substances to a temperature at which one of the components will vaporize. The two substances can have similar boiling points."]}}
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{"type":"multi-choice","id":"76228","dataJson":{"key":5,"prompt":"The rate of evaporation will be high, when...","options":[{"key":"0.6238549990857735","label":"The liquid has a large surface area, and the temperature is high.","value":"The liquid has a large surface area, and the temperature is high."},{"key":"0.6738500166854147","label":"The liquid has a small surface area, and the temperature is high.","value":"The liquid has a small surface area, and the temperature is high."},{"key":"0.46242368578555215","label":"The liquid has a large surface area, and the temperature is low.","value":"The liquid has a large surface area, and the temperature is low."},{"key":"0.8988788504742824","label":"The liquid has a small surface area and the temperature is low.","value":"The liquid has a small surface area and the temperature is low."},{"key":"0.25152559358029547","label":"The surface area is cooled down, so that the molecules have lower energy.","value":"The surface area is cooled down, so that the molecules have lower energy."}],"limitChoices":{"sameNumberAsCorrectAnswers":true},"validResponse":["The liquid has a large surface area, and the temperature is high."]}}
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{"type":"multi-choice","id":"76229","dataJson":{"key":6,"prompt":"Distillation should be used when we want to...","options":[{"key":"0.6116152882152168","label":"Separate two or more liquids that have different boiling points.","value":"Separate two or more liquids that have different boiling points."},{"key":"0.7005238582150535","label":"Separate a liquid from an insoluble substance.","value":"Separate a liquid from an insoluble substance."},{"key":"0.36183052702728247","label":"Separate two insoluble substances.","value":"Separate two insoluble substances."},{"key":"0.6002877765879135","label":"Separate two liquids that have the same boiling point.","value":"Separate two liquids that have the same boiling point."},{"key":"0.23284651709003512","label":"Separate a soluble substance from an insoluble substance.","value":"Separate a soluble substance from an insoluble substance."}],"limitChoices":{"sameNumberAsCorrectAnswers":true},"validResponse":["Separate two or more liquids that have different boiling points."]}}
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