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{"segment":[{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang","title_trans":"","temp":"multiple_choice","correct":[[2]],"list":[{"point":10,"ques":" D\u00e3y n\u00e0o sau \u0111\u00e2y m\u00e0 t\u1ea5t c\u1ea3 c\u00e1c v\u1eadt th\u1ec3 \u0111\u1ec1u l\u00e0 v\u1eadt th\u1ec3 t\u1ef1 nhi\u00ean.","select":["A. C\u00e2y m\u00eda, con \u1ebfch, xe \u0111\u1ea1p ","B. C\u00e2y tre, con c\u00e1, n\u00fai \u0111\u00e1 ","C. Xe \u0111\u1ea1p, \u1ea5m \u0111un n\u01b0\u1edbc, kh\u00ed quy\u1ec3n ","D. M\u00e1y t\u00ednh, c\u1eb7p s\u00e1ch, radio "],"hint":"","explain":"<span class='basic_left'>V\u1eadt th\u1ec3 t\u1ef1 nhi\u00ean l\u00e0 v\u1eadt th\u1ec3 c\u00f3 s\u1eb5n trong t\u1ef1 nhi\u00ean <br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 B.<\/span><\/span> ","column":1}]}],"id_ques":1940},{"time":24,"part":[{"title":"Ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang ","title_trans":"","temp":"multiple_choice","correct":[[3]],"list":[{"point":10,"ques":" D\u00e3y n\u00e0o sau \u0111\u00e2y ch\u1ec9 v\u1ec1 c\u00e1c ch\u1ea5t: ","select":["A. B\u00fat ch\u00ec, t\u00fai nilon, n\u01b0\u1edbc tinh khi\u1ebft ","B. \u1ea4m nh\u00f4m, \u0111\u1ed3ng, d\u00e2y \u0111i\u1ec7n ","C. B\u1ea1c, mu\u1ed1i \u0103n, \u0111\u01b0\u1eddng ","D. Th\u01b0\u1edbc k\u1ebb, ch\u1ea5t d\u1ebbo, than ch\u00ec"],"hint":"","explain":"<span class='basic_left'> Ch\u1ea5t c\u00f3 kh\u1eafp n\u01a1i, \u1edf \u0111\u00e2u c\u00f3 v\u1eadt th\u1ec3 l\u00e0 \u1edf \u0111\u00f3 c\u00f3 ch\u1ea5t. M\u1ed7i ch\u1ea5t(tinh khi\u1ebft) c\u00f3 nh\u1eefng t\u00ednh ch\u1ea5t v\u1eadt l\u00fd v\u00e0 h\u00f3a h\u1ecdc nh\u1ea5t \u0111\u1ecbnh <br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 C.<\/span><\/span> ","column":1}]}],"id_ques":1941},{"time":24,"part":[{"title":" Ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang ","title_trans":"","temp":"multiple_choice","correct":[[1]],"list":[{"point":10,"ques":" T\u00ednh ch\u1ea5t n\u00e0o c\u1ee7a ch\u1ea5t trong s\u1ed1 c\u00e1c ch\u1ea5t sau \u0111\u00e2y c\u00f3 th\u1ec3 nh\u1eadn bi\u1ebft \u0111\u01b0\u1ee3c b\u1eb1ng c\u00e1ch quan s\u00e1t tr\u1ef1c ti\u1ebfp m\u00e0 kh\u00f4ng ph\u1ea3i d\u00f9ng d\u1ee5ng c\u1ee5 \u0111o hay l\u00e0m th\u00ed nghi\u1ec7m ","select":["A. M\u00e0u s\u1eafc ","B. Kh\u1ed1i l\u01b0\u1ee3ng ri\u00eang ","C. T\u00ednh tan trong n\u01b0\u1edbc ","D. Nhi\u1ec7t \u0111\u1ed9 n\u00f3ng ch\u1ea3y "],"hint":"","explain":"<span class='basic_left'>M\u00e0u s\u1eafc c\u1ee7a ch\u1ea5t l\u00e0 t\u00ednh ch\u1ea5t m\u00e0 ta c\u00f3 th\u1ec3 quan s\u00e1t tr\u1ef1c ti\u1ebfp b\u1eb1ng m\u1eaft \u0111\u1ec3 nh\u1eadn bi\u1ebft <br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 A.<\/span><\/span> ","column":1}]}],"id_ques":1942},{"time":24,"part":[{"title":" Ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang ","title_trans":"","temp":"multiple_choice","correct":[[3]],"list":[{"point":10,"ques":"Nh\u1eefng ch\u1ea5t n\u00e0o trong d\u00e3y ch\u1ea5t d\u01b0\u1edbi \u0111\u00e2y ch\u1ec9 ch\u1ee9a nh\u1eefng ch\u1ea5t tinh khi\u1ebft?","select":["A. N\u01b0\u1edbc s\u00f4ng, n\u01b0\u1edbc \u0111\u00e1, n\u01b0\u1edbc chanh ","B. N\u01b0\u1edbc bi\u1ec3n, \u0111\u01b0\u1eddng k\u00ednh, mu\u1ed1i \u0103n ","C. V\u00f2ng b\u1ea1c, \u0111\u01b0\u1eddng k\u00ednh, n\u01b0\u1edbc c\u1ea5t ","D. Kh\u00ed t\u1ef1 nhi\u00ean, gang, d\u1ea7u m\u1ecf "],"hint":"","explain":"<span class='basic_left'>Ch\u1ea5t tinh khi\u1ebft l\u00e0 ch\u1ea5t kh\u00f4ng c\u00f3 l\u1eabn t\u1ea1p ch\u1ea5t n\u00e0o kh\u00e1c, c\u00f3 t\u00ednh ch\u1ea5t nh\u1ea5t \u0111\u1ecbnh v\u00e0 kh\u00f4ng thay \u0111\u1ed5i.<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 C.<\/span><\/span> ","column":1}]}],"id_ques":1943},{"time":24,"part":[{"title":"Ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang","title_trans":"","temp":"multiple_choice","correct":[[3]],"list":[{"point":10,"ques":"Nh\u1eefng ch\u1ea5t n\u00e0o sau \u0111\u00e2y c\u00f3 th\u1ec3 tan trong n\u01b0\u1edbc \u1edf \u0111i\u1ec1u ki\u1ec7n th\u01b0\u1eddng.","select":["A. \u0110\u01b0\u1eddng, mu\u1ed1i \u0103n, b\u1ed9t s\u1eaft ","B. Tinh b\u1ed9t, \u0111\u01b0\u1eddng, protein ","C. Mu\u1ed1i \u0103n, \u0111\u01b0\u1eddng, mu\u1ed1i natri nitrat ","D. B\u1ed9t than, \u0111\u00e1 v\u00f4i, tinh b\u1ed9t "],"hint":"","explain":"<span class='basic_left'> Ch\u1ea5t tan l\u00e0 ch\u1ea5t tan \u0111\u01b0\u1ee3c trong dung m\u00f4i cho tr\u01b0\u1edbc <br\/> V\u1eady ch\u1ea5t m\u00e0 tan \u0111\u01b0\u1ee3c trong dung m\u00f4i s\u1ebd t\u1ea1o th\u00e0nh dung d\u1ecbch <br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 C.<\/span><\/span> ","column":1}]}],"id_ques":1944},{"time":24,"part":[{"title":"Ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang","title_trans":"","temp":"multiple_choice","correct":[[1]],"list":[{"point":10,"ques":"\u0110\u01b0\u1eddng v\u00e0 mu\u1ed1i \u0103n c\u00f3 t\u00ednh ch\u1ea5t c\u01a1 b\u1ea3n gi\u1ed1ng nhau l\u00e0:","select":["A. \u0110\u1ec1u \u1edf th\u1ec3 r\u1eafn v\u00e0 tan \u0111\u01b0\u1ee3c trong n\u01b0\u1edbc ","B. \u0110\u1ec1u tan trong n\u01b0\u1edbc v\u00e0 c\u00f3 v\u1ecb ng\u1ecdt ","C. \u0110\u1ec1u \u1edf th\u1ec3 r\u1eafn v\u00e0 c\u00f3 v\u1ecb m\u1eb7n ","D. \u0110\u1ec1u kh\u00f4ng tan trong n\u01b0\u1edbc v\u00e0 \u1edf th\u1ec3 r\u1eafn "],"hint":"","explain":"<span class='basic_left'> \u0110\u01b0\u1eddng l\u00e0 ch\u1ea5t r\u1eafn k\u1ebft tinh m\u00e0u tr\u1eafng, c\u00f3 v\u1ecb ng\u1ecdt v\u00e0 tan t\u1ed1t trong n\u01b0\u1edbc.<br\/> Mu\u1ed1i \u0103n l\u00e0 ch\u1ea5t r\u1eafn m\u00e0u tr\u1eafng, c\u00f3 v\u1ecb m\u1eb7n, tan t\u1ed1t trong n\u01b0\u1edbc v\u00e0 c\u00f3 nhi\u1ec7t \u0111\u1ed9 n\u00f3ng ch\u1ea3y cao.<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 A.<\/span><\/span> ","column":1}]}],"id_ques":1945},{"time":24,"part":[{"title":"Ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang","title_trans":"","temp":"multiple_choice","correct":[[4]],"list":[{"point":10,"ques":"Ph\u01b0\u01a1ng ph\u00e1p h\u1ee3p l\u00fd nh\u1ea5t \u0111\u1ec3 t\u00e1ch n\u01b0\u1edbc ra kh\u1ecfi d\u1ea7u h\u1ecfa l\u00e0:","select":["A. Ch\u01b0ng c\u1ea5t \u0111\u01a1n ","B. L\u1ecdc","C. Bay h\u01a1i ","D. Chi\u1ebft "],"hint":"","explain":"<span class='basic_left'>Chi\u1ebft l\u00e0 k\u1ef3 thu\u1eadt t\u00e1ch ch\u1ea5t d\u1ef1a tr\u00ean s\u1ef1 ph\u00e2n b\u1ed1 kh\u00e1c nhau c\u1ee7a ch\u1ea5t c\u1ea7n t\u00e1ch v\u00e0o 2 pha l\u1ecfng<br\/>N\u01b0\u1edbc v\u00e0 d\u1ea7u \u0111\u1ec1u \u1edf th\u1ec3 l\u1ecfng<br\/>D\u1ea7u kh\u00f4ng tan trong n\u01b0\u1edbc v\u00e0 nh\u1eb9 h\u01a1n n\u01b0\u1edbc s\u1ebd n\u1ed5i l\u00ean tr\u00ean t\u1ea1o th\u00e0nh l\u1edbp.Do v\u1eady d\u00f9ng ph\u01b0\u01a1ng ph\u00e1p chi\u1ebft l\u00e0 h\u1ee3p l\u00fd nh\u00e2t.<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 D.<\/span><\/span> ","column":1}]}],"id_ques":1946},{"time":24,"part":[{"title":"Ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang","title_trans":"","temp":"multiple_choice","correct":[[3]],"list":[{"point":10,"ques":"Th\u00e0nh ph\u1ea7n ch\u00ednh c\u1ee7a g\u1ed7 l\u00e0:","select":["A. saccaroz\u01a1 ","B. glucoz\u01a1 ","C. xenluloz\u01a1 ","D. protein "],"hint":"","explain":"<span class='basic_left'>Saccaroz\u01a1 l\u00e0 lo\u1ea1i \u0111\u01b0\u1eddng ph\u1ed5 bi\u1ebfn nh\u1ea5t, c\u00f3 trong nhi\u1ec1u lo\u00e0i th\u1ef1c v\u1eadt, c\u00f3 nhi\u1ec1u nh\u1ea5t trong c\u00e2y m\u00eda, c\u1ee7 c\u1ea3i \u0111\u01b0\u1eddng v\u00e0 hoa th\u1ed1t n\u1ed1t.<br\/>Glucoz\u01a1 l\u00e0 ch\u1ea5t r\u1eafn, tinh th\u1ec3 kh\u00f4ng m\u00e0u, d\u1ec5 tan trong n\u01b0\u1edbc, c\u00f3 v\u1ecb ng\u1ecdt, c\u00f3 trong h\u1ea7u h\u1ebft c\u00e1c b\u1ed9 ph\u00e2n c\u1ee7a c\u00e2y nh\u01b0 l\u00e1, hoa, r\u1ec5,....v\u00e0 nh\u1ea5t l\u00e0 trong qu\u1ea3 ch\u00edn.<br\/>Xenluloz\u01a1 l\u00e0 th\u00e0nh ph\u1ea7n ch\u00ednh t\u1ea1o n\u00ean m\u00e0ng t\u1ebf b\u00e0o th\u1ef1c v\u1eadt, t\u1ea1o n\u00ean b\u1ed9 khung c\u1ee7a c\u00e2y c\u1ed1i ( trong g\u1ed7, xenluloz\u01a1 chi\u1ebfm 40-50% kh\u1ed1i l\u01b0\u1ee3ng<br\/>Protein l\u00e0 th\u00e0nh ph\u1ea7n ch\u00ednh c\u1ee7a c\u01a1 th\u1ec3 \u0111\u1ed9ng v\u1eadt, c\u00f3 trong th\u1ef1c v\u1eadt v\u00e0 l\u00e0 c\u01a1 s\u1edf c\u1ee7a s\u1ef1 s\u1ed1ng. <br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 C.<\/span><\/span> ","column":2}]}],"id_ques":1947},{"time":24,"part":[{"title":"Ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang","title_trans":"","temp":"multiple_choice","correct":[[2]],"list":[{"point":10,"ques":"H\u1ed7n h\u1ee3p n\u00e0o sau \u0111\u00e2y c\u00f3 th\u1ec3 t\u00e1ch ri\u00eang c\u00e1c ch\u1ea5t th\u00e0nh ph\u1ea7n b\u1eb1ng c\u00e1ch cho h\u1ed7n h\u1ee3p v\u00e0o n\u01b0\u1edbc, sau \u0111\u00f3 khu\u1ea5y \u0111\u1ec1u v\u00e0 l\u1ecdc","select":["A. B\u1ed9t than v\u00e0 b\u1ed9t s\u0103t ","B. B\u1ed9t \u0111\u00e1 v\u00f4i v\u00e0 mu\u1ed1i \u0103n","C. \u0110\u01b0\u1eddng v\u00e0 mu\u1ed1i ","D. Gi\u1ea5m v\u00e0 r\u01b0\u1ee3u "],"hint":"","explain":"<span class='basic_left'>\u0110\u1ec3 t\u00e1ch ri\u00eang hai ch\u1ea5t trong dung m\u00f4i n\u01b0\u1edbc th\u00ec m\u1ed9t ch\u1ea5t ph\u1ea3i tan trong n\u01b0\u1edbc v\u00e0 ch\u1ea5t c\u00f2n l\u1ea1i kh\u00f4ng tan trong n\u01b0\u1edbc<br\/>B\u1ed9t \u0111\u00e1 v\u00f4i l\u00e0 ch\u1ea5t r\u1eafn kh\u00f4ng tan trong n\u01b0\u1edbc c\u00f2n mu\u1ed1i \u0103n l\u00e0 ch\u1ea5t r\u1eafn tan t\u1ed1t trong n\u01b0\u1edbc<br\/> Khi cho h\u1ed7n h\u1ee3p tr\u00ean v\u00e0o dung m\u00f4i n\u01b0\u1edbc v\u00e0 khu\u1ea5y \u0111\u1ec1u th\u00ec mu\u1ed1i \u0103n tan h\u1ebft c\u00f2n l\u1ea1i b\u1ed9t \u0111\u00e1 v\u00f4i kh\u00f4ng tan m\u1ed9t time s\u1ebd b\u1ecb l\u1eafng xu\u1ed1ng \u0111\u00e1y c\u1ed1c<br\/> L\u1ecdc g\u1ea1n ta t\u00e1ch ri\u00eang \u0111\u01b0\u1ee3c h\u1ed7n h\u1ee3p hai ch\u1ea5t tr\u00ean<br\/><span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 B.<\/span><\/span> ","column":1}]}],"id_ques":1948},{"time":24,"part":[{"title":"ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang","title_trans":"","temp":"multiple_choice","correct":[[1]],"list":[{"point":10,"ques":"H\u00e3y ch\u1ecdn c\u00e2u \u0111\u00fang trong c\u00e1c c\u00e2u sau \u0111\u00e2y '\u1edf \u00e1p su\u1ea5t kh\u00ed quy\u1ec3n:'","select":["A. N\u01b0\u1edbc c\u1ea5t s\u00f4i \u1edf ${{100}^{0}}C$ ","B. N\u01b0\u1edbc mu\u1ed1i c\u00f3 $t_{s}^{0}\\le {{100}^{0}}C$ ","C. N\u01b0\u1edbc \u0111\u01b0\u1eddng \u0111\u00f4ng \u0111\u1eb7c \u1edf $t_{s}^{0}\\ge {{0}^{0}}C$ ","D. N\u01b0\u1edbc c\u1ea5t \u0111\u00f4ng \u0111\u1eb7c \u1edf $t_{s}^{0}\\le {{0}^{0}}C$ "],"hint":"","explain":"<span class='basic_left'>\u00c1p su\u1ea5t kh\u00f4ng kh\u00ed hay c\u00f2n g\u1ecdi l\u00e0 \u00e1p su\u1ea5t kh\u00ed quy\u1ec3n t\u1ea1i b\u1ec1 m\u1eb7t n\u01b0\u1edbc bi\u1ec3n l\u00e0m chu\u1ea9n v\u1edbi 1 atm<br\/>N\u01b0\u1edbc c\u1ea5t s\u00f4i \u1edf ${{100}^{0}}C$ d\u01b0\u1edbi \u0111i\u1ec1u ki\u1ec7n \u00e1p su\u1ea5t kh\u00ed quy\u1ec3n 1 atm<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 A.<\/span><\/span> ","column":1}]}],"id_ques":1949}],"lesson":{"save":0,"level":2}}

Điểm của bạn.

Câu hỏi này theo dạng chọn đáp án đúng, sau khi đọc xong câu hỏi, bạn bấm vào một trong số các đáp án mà chương trình đưa ra bên dưới, sau đó bấm vào nút gửi để kiểm tra đáp án và sẵn sàng chuyển sang câu hỏi kế tiếp

Trả lời đúng trong khoảng thời gian quy định bạn sẽ được + số điểm như sau:
Trong khoảng 1 phút đầu tiên + 5 điểm
Trong khoảng 1 phút -> 2 phút + 4 điểm
Trong khoảng 2 phút -> 3 phút + 3 điểm
Trong khoảng 3 phút -> 4 phút + 2 điểm
Trong khoảng 4 phút -> 5 phút + 1 điểm

Quá 5 phút: không được cộng điểm

Tổng thời gian làm mỗi câu (không giới hạn)

Điểm của bạn.

Bấm vào đây nếu phát hiện có lỗi hoặc muốn gửi góp ý