Giới thiệu về carbohydrate. Glucose và fructose

Home Lớp 12 Hoá học Lớp 12 - Sách KNTT Bài 4: Giới thiệu về carbohydrate. Glucose và fructoseBài tập trung bình

{"common":{"save":0,"post_id":"10078","level":2,"total":10,"point":10,"point_extra":0},"segment":[{"id":"8947","post_id":"10078","mon_id":"1160346","chapter_id":"1159849","question":"So v\u1edbi xà phòng, ch\u1ea5t gi\u1eb7t r\u1eeda t\u1ed5ng h\u1ee3p<\/p>","options":["A. khó hòa tan trong n\u01b0\u1edbc.","B. khó phân h\u1ee7y sinh h\u1ecdc.","C. không s\u1eed d\u1ee5ng \u0111\u01b0\u1ee3c trong môi tr\u01b0\u1eddng acid.","D. không s\u1eed d\u1ee5ng \u0111\u01b0\u1ee3c khi dùng n\u01b0\u1edbc c\u1ee9ng."],"correct":"2","level":"2","hint":"G\u1ee3i ý: Ch\u1ea5t gi\u1eb7t r\u1eeda t\u1ed5ng h\u1ee3p có \u01b0u \u0111i\u1ec3m h\u01a1n xà phòng khi dùng v\u1edbi n\u01b0\u1edbc c\u1ee9ng, nh\u01b0ng l\u1ea1i có nh\u01b0\u1ee3c \u0111i\u1ec3m v\u1ec1 môi tr\u01b0\u1eddng.<\/p>","answer":"\u0110áp án \u0111úng: B. Khó phân h\u1ee7y sinh h\u1ecdc<\/span><\/strong> Gi\u1ea3i thích: Ch\u1ea5t gi\u1eb7t r\u1eeda t\u1ed5ng h\u1ee3p (detergent) có g\u1ed1c ankylbenzensunfonat b\u1ec1n, khó phân h\u1ee7y sinh h\u1ecdc → gây ô nhi\u1ec5m. A sai: Ch\u1ea5t gi\u1eb7t r\u1eeda t\u1ed5ng h\u1ee3p v\u1eabn tan t\u1ed1t trong n\u01b0\u1edbc. C sai: Chúng dùng \u0111\u01b0\u1ee3c c\u1ea3 trong môi tr\u01b0\u1eddng axit. D sai: Chúng dùng \u0111\u01b0\u1ee3c trong n\u01b0\u1edbc c\u1ee9ng, không k\u1ebft t\u1ee7a nh\u01b0 xà phòng.<\/p>","type":"choose","extra_type":"classic","user_id":"139","test":"0","date":"2025-09-18 23:48:38","option_type":"txt","len":3},{"id":"8948","post_id":"10078","mon_id":"1160346","chapter_id":"1159849","question":"Ch\u1ea5t béo r\u1eafn th\u01b0\u1eddng ch\u1ee9a<\/p>","options":["A. g\u1ed1c acid béo không no.","B. g\u1ed1c acid béo no.","C. g\u1ed1c mu\u1ed1i no.","D. g\u1ed1c mu\u1ed1i không no."],"correct":"2","level":"2","hint":"G\u1ee3i ý: M\u1ee1 \u0111\u1ed9ng v\u1eadt th\u01b0\u1eddng r\u1eafn \u1edf nhi\u1ec7t \u0111\u1ed9 th\u01b0\u1eddng, do ch\u1ee9a nhi\u1ec1u axit béo d\u1ea1ng bão hòa.<\/p>","answer":"\u0110áp án \u0111úng: B. G\u1ed1c axit béo no<\/span><\/strong> Gi\u1ea3i thích: Axit béo no (nh\u01b0 axit stearic, axit panmitic) có m\u1ea1ch th\u1eb3ng, d\u1ec5 s\u1eafp x\u1ebfp ch\u1eb7t → ch\u1ea5t béo \u1edf tr\u1ea1ng thái r\u1eafn. A sai: Axit béo không no (oleic, linoleic) làm ch\u1ea5t béo \u1edf tr\u1ea1ng thái l\u1ecfng (d\u1ea7u). C sai: Không có khái ni\u1ec7m “g\u1ed1c mu\u1ed1i no” trong ch\u1ea5t béo. D sai: “G\u1ed1c mu\u1ed1i không no” c\u0169ng không \u0111úng khái ni\u1ec7m.<\/p>","type":"choose","extra_type":"classic","user_id":"139","test":"0","date":"2025-09-18 23:49:18","option_type":"txt","len":2},{"id":"8949","post_id":"10078","mon_id":"1160346","chapter_id":"1159849","question":"Carbohydrate nào sau \u0111ây thu\u1ed9c lo\u1ea1i disaccharide?<\/p>","options":["A. Cellulose.","B. Fructose.","C. Saccharose.","D. Glucose."],"correct":"3","level":"2","hint":"G\u1ee3i ý: Disaccharide là lo\u1ea1i \u0111\u01b0\u1eddng \u0111ôi, \u0111\u01b0\u1ee3c t\u1ea1o b\u1edfi s\u1ef1 ng\u01b0ng t\u1ee5 c\u1ee7a hai monosaccharide.<\/p>","answer":"\u0110áp án \u0111úng: C. Saccharose<\/span><\/strong> Gi\u1ea3i thích: Saccharose (C\u2081\u2082H\u2082\u2082O\u2081\u2081) g\u1ed3m 1 g\u1ed1c glucose + 1 g\u1ed1c fructose → disaccharide. A sai: Cellulose là polysaccharide. B sai: Fructose là monosaccharide. D sai: Glucose là monosaccharide.<\/p>","type":"choose","extra_type":"classic","user_id":"139","test":"0","date":"2025-09-18 23:49:55","option_type":"txt","len":1}]}