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Question 1 sur 10 10:00

[{"id":72722,"question":"Quelle est la dérivée de la fonction f(x) = 3x² + 2x - 5 ?","option_a":"6x + 2","option_b":"3x² + 2","option_c":"6x² + 2x","option_d":"x³ + x² - 5x","option_e":"","option_f":"","bonne_reponse":"A","explication":"La dérivée d'une fonction polynôme se calcule terme par terme : f'(x) = 6x + 2.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":72723,"question":"Vrai ou Faux ? La photosynthèse produit du dioxygène.","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"A","explication":"La photosynthèse, processus réalisé par les plantes vertes, produit du dioxygène comme sous-produit.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":72724,"question":"Quel est le pH d'une solution de HCl à 0,1 mol\/L ?","option_a":"1","option_b":"7","option_c":"13","option_d":"14","option_e":"","option_f":"","bonne_reponse":"A","explication":"HCl est un acide fort qui se dissocie complètement : pH = -log(0,1) = 1.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":72725,"question":"Vrai ou Faux ? La loi de Boyle-Mariotte s'applique uniquement aux gaz parfaits.","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"A","explication":"La loi de Boyle-Mariotte (P.V = constante) est une approximation valable pour les gaz réels à basse pression.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":72726,"question":"Quelle est la capitale de la Tunisie ?","option_a":"Sfax","option_b":"Tunis","option_c":"Djerba","option_d":"Sousse","option_e":"","option_f":"","bonne_reponse":"B","explication":"Tunis est la capitale politique et économique de la Tunisie.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":72727,"question":"Vrai ou Faux ? La mitose produit des cellules haploïdes.","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"B","explication":"La mitose produit des cellules filles génétiquement identiques à la cellule mère (diploïdes).","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":72728,"question":"Quelle est la formule de l'acide sulfurique ?","option_a":"HCl","option_b":"H₂SO₄","option_c":"HNO₃","option_d":"CH₃COOH","option_e":"","option_f":"","bonne_reponse":"B","explication":"L'acide sulfurique a pour formule H₂SO₄.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":72729,"question":"Vrai ou Faux ? La loi d'Ohm s'écrit U = R.I.","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"A","explication":"La loi d'Ohm relie la tension U, la résistance R et l'intensité I par la formule U = R.I.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":72730,"question":"Quelle est la capitale de la France ?","option_a":"Lyon","option_b":"Paris","option_c":"Marseille","option_d":"Bordeaux","option_e":"","option_f":"","bonne_reponse":"B","explication":"Paris est la capitale de la France.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":72731,"question":"Vrai ou Faux ? La respiration cellulaire produit de l'ATP.","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"A","explication":"La respiration cellulaire est le processus qui permet de produire de l'ATP (énergie cellulaire) à partir du glucose.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0}]