{"common":{"save":0,"post_id":"8443","level":1,"total":10,"point":10,"point_extra":0},"segment":[{"id":"7178","post_id":"8443","mon_id":"9060","chapter_id":"1159539","question":"<p>\u0110i\u1ec1n vào ch\u1ed7 tr\u1ed1ng: "Các hoá ch\u1ea5t \u0111\u01b0\u1ee3c \u0111\u1ef1ng trong chai ho\u1eb7c l\u1ecd kín và có dán nhãn ghi \u0111\u1ea7y \u0111\u1ee7 thông tin, bao g\u1ed3m tên, công th\u1ee9c, tr\u1ecdng l\u01b0\u1ee3ng ho\u1eb7c th\u1ec3 tích, ... , nhà s\u1ea3n xu\u1ea5t, c\u1ea3nh báo và \u0111i\u1ec1u ki\u1ec7n b\u1ea3o qu\u1ea3n. Các dung d\u1ecbch c\u1ea7n ghi rõ n\u1ed3ng \u0111\u1ed9 c\u1ee7a ch\u1ea5t tan.<\/p>","options":["<strong>A. <\/strong>\u0110\u1ed9 tinh khi\u1ebft","<strong>B.<\/strong> N\u1ed3ng \u0111\u1ed9 mol","<strong>C. <\/strong>N\u1ed3ng \u0111\u1ed9 ch\u1ea5t tan","<strong>D. <\/strong>H\u1ea1n s\u1eed d\u1ee5ng"],"correct":"1","level":"1","hint":"<p>Khi l\u01b0u tr\u1eef hóa ch\u1ea5t, ngoài các thông tin v\u1ec1 tên, công th\u1ee9c và \u0111i\u1ec1u ki\u1ec7n b\u1ea3o qu\u1ea3n, ng\u01b0\u1eddi ta còn quan tâm \u0111\u1ebfn m\u1ee9c \u0111\u1ed9 <strong>ch\u1ea5t l\u01b0\u1ee3ng<\/strong> c\u1ee7a hóa ch\u1ea5t \u0111ó. \u0110ây là y\u1ebfu t\u1ed1 quan tr\u1ecdng \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o tính chính xác trong các thí nghi\u1ec7m và \u1ee9ng d\u1ee5ng th\u1ef1c t\u1ebf.<\/p>","answer":"<p>\u0110áp án \u0111úng:<span style=\"color:#16a085;\"><strong> A. \u0110\u1ed9 tinh khi\u1ebft<\/strong><\/span><\/p><p>\u0110\u1ed9 tinh khi\u1ebft c\u1ee7a hóa ch\u1ea5t là m\u1ed9t thông tin quan tr\u1ecdng trên nhãn chai\/l\u1ecd, giúp xác \u0111\u1ecbnh m\u1ee9c \u0111\u1ed9 s\u1ea1ch c\u1ee7a hóa ch\u1ea5t, \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn k\u1ebft qu\u1ea3 thí nghi\u1ec7m và \u1ee9ng d\u1ee5ng trong th\u1ef1c t\u1ebf.<\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"139","test":"0","date":"2025-02-11 10:38:23","option_type":"txt","len":2},{"id":"7179","post_id":"8443","mon_id":"9060","chapter_id":"1159539","question":"<p>Bi\u1ebfn áp ngu\u1ed3n là:<\/p>","options":["<strong>A. <\/strong>Thi\u1ebft b\u1ecb xoay chuy\u1ec3n \u0111i\u1ec7n áp thành \u0111i\u1ec7n áp m\u1ed9t chi\u1ec1u","<strong>B. <\/strong>Thi\u1ebft b\u1ecb cung c\u1ea5p ngu\u1ed3n \u0111i\u1ec7n","<strong>C. <\/strong>Thi\u1ebft b\u1ecb có ch\u1ee9c n\u0103ng chuy\u1ec3n \u0111\u1ed5i \u0111i\u1ec7n áp xoay chi\u1ec1u có giá tr\u1ecb 180 V thành \u0111i\u1ec7n áp xoay chi\u1ec1u (AC) ho\u1eb7c \u0111i\u1ec7n áp m\u1ed9t chi\u1ec1u (DC) có giá tr\u1ecb nh\u1ecf, \u0111\u1ea3m b\u1ea3o an toàn khi ti\u1ebfn hành thí nghi\u1ec7m","<strong>D. <\/strong>Thi\u1ebft b\u1ecb có ch\u1ee9c n\u0103ng chuy\u1ec3n \u0111\u1ed5i \u0111i\u1ec7n áp xoay chi\u1ec1u có giá tr\u1ecb 220 V thành \u0111i\u1ec7n áp xoay chi\u1ec1u (AC) ho\u1eb7c \u0111i\u1ec7n áp m\u1ed9t chi\u1ec1u (DC) có giá tr\u1ecb nh\u1ecf, \u0111\u1ea3m b\u1ea3o an toàn khi ti\u1ebfn hành thí nghi\u1ec7m"],"correct":"4","level":"1","hint":"<p>Bi\u1ebfn áp ngu\u1ed3n có vai trò quan tr\u1ecdng trong vi\u1ec7c thay \u0111\u1ed5i \u0111i\u1ec7n áp \u0111\u1ec3 phù h\u1ee3p v\u1edbi các thi\u1ebft b\u1ecb \u0111i\u1ec7n. Nó th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 gi\u1ea3m \u0111i\u1ec7n áp cao t\u1eeb l\u01b0\u1edbi \u0111i\u1ec7n xu\u1ed1ng m\u1ee9c an toàn h\u01a1n, giúp b\u1ea3o v\u1ec7 thi\u1ebft b\u1ecb và \u0111\u1ea3m b\u1ea3o an toàn khi s\u1eed d\u1ee5ng.<\/p>","answer":"<p>\u0110áp án \u0111úng: <span style=\"color:#16a085;\"><strong>D. Thi\u1ebft b\u1ecb có ch\u1ee9c n\u0103ng chuy\u1ec3n \u0111\u1ed5i \u0111i\u1ec7n áp xoay chi\u1ec1u có giá tr\u1ecb 220 V thành \u0111i\u1ec7n áp xoay chi\u1ec1u (AC) ho\u1eb7c \u0111i\u1ec7n áp m\u1ed9t chi\u1ec1u (DC) có giá tr\u1ecb nh\u1ecf, \u0111\u1ea3m b\u1ea3o an toàn khi ti\u1ebfn hành thí nghi\u1ec7m<\/strong><\/span><\/p><p>Bi\u1ebfn áp ngu\u1ed3n có ch\u1ee9c n\u0103ng chuy\u1ec3n \u0111\u1ed5i \u0111i\u1ec7n áp xoay chi\u1ec1u 220V xu\u1ed1ng m\u1ee9c \u0111i\u1ec7n áp nh\u1ecf h\u01a1n, có th\u1ec3 là xoay chi\u1ec1u (AC) ho\u1eb7c m\u1ed9t chi\u1ec1u (DC), \u0111\u1ea3m b\u1ea3o an toàn khi ti\u1ebfn hành thí nghi\u1ec7m và s\u1eed d\u1ee5ng thi\u1ebft b\u1ecb \u0111i\u1ec7n.<\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"139","test":"0","date":"2025-02-11 10:42:59","option_type":"txt","len":3},{"id":"7180","post_id":"8443","mon_id":"9060","chapter_id":"1159541","question":"<p>Joulemeter là gì?<\/p>","options":["<strong>A. <\/strong>Thi\u1ebft b\u1ecb \u0111o dòng \u0111i\u1ec7n, \u0111i\u1ec7n áp, công su\u1ea5t và n\u0103ng l\u01b0\u1ee3ng \u0111i\u1ec7n cung c\u1ea5p cho m\u1ea1ch \u0111i\u1ec7n.","<strong>B. <\/strong>Thi\u1ebft b\u1ecb \u0111o \u0111i\u1ec7n áp.","<strong>C.<\/strong> Thi\u1ebft b\u1ecb \u0111o dòng \u0111i\u1ec7n.","<strong>D. <\/strong>Thi\u1ebft b\u1ecb \u0111o công su\u1ea5t và n\u0103ng l\u01b0\u1ee3ng \u0111i\u1ec7n cung c\u1ea5p cho m\u1ea1ch \u0111i\u1ec7n."],"correct":"1","level":"1","hint":"<p>Thi\u1ebft b\u1ecb này không ch\u1ec9 \u0111o m\u1ed9t \u0111\u1ea1i l\u01b0\u1ee3ng \u0111i\u1ec7n mà có th\u1ec3 \u0111o nhi\u1ec1u thông s\u1ed1 liên quan \u0111\u1ebfn \u0111i\u1ec7n n\u0103ng trong m\u1ea1ch, bao g\u1ed3m dòng \u0111i\u1ec7n, \u0111i\u1ec7n áp, công su\u1ea5t và n\u0103ng l\u01b0\u1ee3ng. Hãy ch\u1ecdn ph\u01b0\u01a1ng án mô t\u1ea3 \u0111\u1ea7y \u0111\u1ee7 nh\u1ea5t các ch\u1ee9c n\u0103ng c\u1ee7a nó.<\/p>","answer":"<p>\u0110áp án \u0111úng: <span style=\"color:#16a085;\"><strong>A. Thi\u1ebft b\u1ecb \u0111o dòng \u0111i\u1ec7n, \u0111i\u1ec7n áp, công su\u1ea5t và n\u0103ng l\u01b0\u1ee3ng \u0111i\u1ec7n cung c\u1ea5p cho m\u1ea1ch \u0111i\u1ec7n.<\/strong><\/span><\/p><p>Joulemeter là thi\u1ebft b\u1ecb dùng \u0111\u1ec3 \u0111o t\u1ed5ng h\u1ee3p nhi\u1ec1u thông s\u1ed1 \u0111i\u1ec7n trong m\u1ea1ch, bao g\u1ed3m dòng \u0111i\u1ec7n, \u0111i\u1ec7n áp, công su\u1ea5t và n\u0103ng l\u01b0\u1ee3ng tiêu th\u1ee5. Nó giúp \u0111ánh giá m\u1ee9c tiêu th\u1ee5 \u0111i\u1ec7n n\u0103ng c\u1ee7a các thi\u1ebft b\u1ecb \u0111i\u1ec7n.<\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"139","test":"0","date":"2025-02-11 10:46:18","option_type":"txt","len":3}]}