Suspension and Emulsions

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0 [{"id":462342,"quiz_id":"23755","answer_id":null,"answerType_id":"0","created_at":"2018-05-14 22:19:23","updated_at":"2018-05-14 23:24:10","questionName":"Suspensions are assessed using a \u201csedimentation volume\u201d (F) which can be calculated by taking into consideration the final (Vf) volume of sediment and initial (Vo) volume of the suspension before settling using the equation:","questionTimeSeconds":"0","questionTimeMinutes":"4","questionImagePath":null,"position":3,"explanation":"","question_score_id":null,"lang":"","questionAudioPath":null},{"id":462361,"quiz_id":"23755","answer_id":null,"answerType_id":"0","created_at":"2018-05-14 22:42:41","updated_at":"2018-05-14 23:24:12","questionName":"Suspensions can be stabilised by:","questionTimeSeconds":"0","questionTimeMinutes":"6","questionImagePath":null,"position":11,"explanation":"Accords the Stoke's equation, increasing viscosity (\u03b7) will reduce sedimentation velocity (will sediment slower).\r\n> polymers increases viscosity \r\n> shear-thinning decreases therefore will not stablise suspension \r\n>surfactants will reduce aggregation (clumping) therefore will make suspension more stable \r\n> adding salt will reduce zeta potential meaning less repulsion and more likely to aggregate \r\n","question_score_id":null,"lang":"","questionAudioPath":null},{"id":462362,"quiz_id":"23755","answer_id":null,"answerType_id":"0","created_at":"2018-05-14 22:44:47","updated_at":"2018-05-14 23:24:12","questionName":"An emulsion is..","questionTimeSeconds":"0","questionTimeMinutes":"5","questionImagePath":null,"position":12,"explanation":"","question_score_id":null,"lang":"","questionAudioPath":null},{"id":462366,"quiz_id":"23755","answer_id":null,"answerType_id":"2","created_at":"2018-05-14 22:59:21","updated_at":"2018-05-14 23:24:12","questionName":"Match the terms of the emulsion instabilities with their definitions:","questionTimeSeconds":"0","questionTimeMinutes":"8","questionImagePath":null,"position":16,"explanation":"","question_score_id":null,"lang":"","questionAudioPath":null},{"id":462357,"quiz_id":"23755","answer_id":null,"answerType_id":"0","created_at":"2018-05-14 22:27:16","updated_at":"2018-05-14 23:24:11","questionName":"Deflocculated means","questionTimeSeconds":"0","questionTimeMinutes":"4","questionImagePath":null,"position":8,"explanation":"Deflocculation is when Suspensions that do not flocculate but coagulates instead -> deflocculation therefore means coagulation ","question_score_id":null,"lang":"","questionAudioPath":null},{"id":462339,"quiz_id":"23755","answer_id":null,"answerType_id":"2","created_at":"2018-05-14 22:16:37","updated_at":"2018-05-15 04:37:58","questionName":"Regarding Stoke's law of the velocity of sedimentation, match the symbols with their meaning:","questionTimeSeconds":"0","questionTimeMinutes":"10","questionImagePath":"uploads\/suspension-and-emulsions\/image.png","position":2,"explanation":"","question_score_id":null,"lang":"","questionAudioPath":null},{"id":462353,"quiz_id":"23755","answer_id":null,"answerType_id":"0","created_at":"2018-05-14 22:25:25","updated_at":"2018-05-14 23:24:11","questionName":"Caking of suspension if formed with...","questionTimeSeconds":"0","questionTimeMinutes":"4","questionImagePath":null,"position":7,"explanation":"Caking is permanent -> coagulation ","question_score_id":null,"lang":"","questionAudioPath":null},{"id":462365,"quiz_id":"23755","answer_id":null,"answerType_id":"0","created_at":"2018-05-14 22:54:45","updated_at":"2018-05-14 23:24:12","questionName":"Which is not an emulsion instability?","questionTimeSeconds":"0","questionTimeMinutes":"5","questionImagePath":null,"position":15,"explanation":"Coagulation is involved in suspensions and colloids only ","question_score_id":null,"lang":"","questionAudioPath":null},{"id":462364,"quiz_id":"23755","answer_id":null,"answerType_id":"0","created_at":"2018-05-14 22:52:55","updated_at":"2018-05-14 23:24:12","questionName":"Interfacial tension is","questionTimeSeconds":"0","questionTimeMinutes":"6","questionImagePath":null,"position":14,"explanation":"","question_score_id":null,"lang":"","questionAudioPath":null},{"id":462348,"quiz_id":"23755","answer_id":null,"answerType_id":"0","created_at":"2018-05-14 22:23:07","updated_at":"2018-05-14 23:24:11","questionName":"Coagulation is...","questionTimeSeconds":"0","questionTimeMinutes":"6","questionImagePath":null,"position":5,"explanation":"","question_score_id":null,"lang":"","questionAudioPath":null},{"id":462351,"quiz_id":"23755","answer_id":null,"answerType_id":"0","created_at":"2018-05-14 22:24:33","updated_at":"2018-05-14 23:24:11","questionName":"Flocculation is... 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Suspensions are assessed using a “sedimentation volume” (F) which can be calculated by taking into consideration the final (Vf) volume of sediment and initial (Vo) volume of the suspension before settling using the equation:

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