Đề tham khảo tốt nghiệp THPT môn Hóa học năm 2025 của Quảng Bình (lần 1)

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{"save":1,"level":1,"time":"50","total":40,"point":5,"segment":[{"id":"5689","test_id":"541","question":"Trong th\u1ef1c t\u1ebf, s\u1eed d\u1ee5ng cách nào sau \u0111ây \u0111\u1ec3 b\u1ea3o v\u1ec7 kim lo\u1ea1i s\u1eaft kh\u1ecfi b\u1ecb \u0103n mòn?<\/p>","options":["A.<\/strong> G\u1eafn \u0111\u1ed3ng v\u1edbi kim lo\u1ea1i s\u1eaft.","B.<\/strong> Ngâm s\u1eaft trong dung d\u1ecbch acid.","C.<\/strong> Ph\u1ee7 m\u1ed9t l\u1edbp s\u01a1n lên b\u1ec1 m\u1eb7t s\u1eaft.","D.<\/strong> \u0110\u1ec3 trong không khí \u1ea9m."],"correct":"3","answer":"Ch\u1ecdn C.<\/strong> Ph\u1ee7 m\u1ed9t l\u1edbp s\u01a1n lên b\u1ec1 m\u1eb7t s\u1eaft.<\/span><\/p>Trong th\u1ef1c t\u1ebf, ng\u01b0\u1eddi ta ph\u1ee7 m\u1ed9t l\u1edbp s\u01a1n lên b\u1ec1 m\u1eb7t s\u1eaft, s\u01a1n s\u1ebd ng\u0103n cách s\u1eaft v\u1edbi môi tr\u01b0\u1eddng bên ngoài nh\u1edd \u0111ó b\u1ea3o v\u1ec7 kim lo\u1ea1i s\u1eaft kh\u1ecfi b\u1ecb \u0103n mòn.<\/p>","type":"choose","user_id":"131","test":"1","date":"2025-06-15 10:19:06"},{"id":"5690","test_id":"541","question":"Tro th\u1ef1c v\u1eadt \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng nh\u01b0 m\u1ed9t lo\u1ea1i phân bón cung c\u1ea5p nguyên t\u1ed1 potassium cho cây tr\u1ed3ng do ch\u1ee9a mu\u1ed1i potassium carbonate. Công th\u1ee9c c\u1ee7a potassium carbonate là<\/p>","options":["A.<\/strong> $KCl$<\/span>","B.<\/strong> $KOH$<\/span>","C.<\/strong> $KHCO_3$<\/span>","D.<\/strong> $K_2CO_3$<\/span>"],"correct":"4","answer":"Ch\u1ecdn D.<\/strong> $K_2CO_3$<\/span>.<\/span><\/p>Công th\u1ee9c c\u1ee7a potassium carbonate là K2<\/sub>CO3<\/sub>.<\/p>","type":"choose","user_id":"131","test":"1","date":"2025-06-15 10:20:29"}]}