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Question 1 sur 10 10:00

[{"id":71642,"question":"Quel est le résultat de 3 × (4 + 2) ?","option_a":"18","option_b":"14","option_c":"24","option_d":"10","option_e":"","option_f":"","bonne_reponse":"A","explication":"On applique la règle des priorités : d'abord la parenthèse (4+2=6), puis la multiplication (3×6=18).","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":71643,"question":"La somme des angles d'un triangle est égale à 180 degrés.","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"A","explication":"C'est une propriété fondamentale de la géométrie plane : la somme des angles internes d'un triangle est toujours 180°.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":71644,"question":"Quelle est la dérivée de f(x) = 5x² + 3x - 2 ?","option_a":"10x + 3","option_b":"10x² + 3x","option_c":"5x + 3","option_d":"10x + 3x - 2","option_e":"","option_f":"","bonne_reponse":"A","explication":"La dérivée de 5x² est 10x, celle de 3x est 3, et celle de -2 est 0. Donc f'(x) = 10x + 3.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":71645,"question":"Un atome est composé de protons, neutrons et électrons.","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"A","explication":"C'est le modèle atomique de base : le noyau contient les protons (chargés +) et les neutrons (neutres), tandis que les électrons (chargés -) gravitent autour.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":71646,"question":"Quelle est la capitale de la Tunisie ?","option_a":"Tunis","option_b":"Sfax","option_c":"Sousse","option_d":"Bizerte","option_e":"","option_f":"","bonne_reponse":"A","explication":"La capitale de la Tunisie est Tunis, située dans le nord du pays.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":71647,"question":"La photosynthèse se produit uniquement la nuit.","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"B","explication":"La photosynthèse nécessite la lumière du soleil, elle se produit donc principalement le jour.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":71648,"question":"Quel est le résultat de √(16) + √(9) ?","option_a":"7","option_b":"5","option_c":"10","option_d":"12","option_e":"","option_f":"","bonne_reponse":"A","explication":"√(16) = 4 et √(9) = 3, donc 4 + 3 = 7.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":71649,"question":"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":71650,"question":"Quelle est la formule chimique de l'eau ?","option_a":"H2O","option_b":"CO2","option_c":"O2","option_d":"H2SO4","option_e":"","option_f":"","bonne_reponse":"A","explication":"La formule chimique de l'eau est H2O, composée de deux atomes d'hydrogène et un atome d'oxygène.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":71651,"question":"Un nombre premier est divisible uniquement par 1 et par lui-même.","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"A","explication":"Par définition, un nombre premier n'a que deux diviseurs : 1 et lui-même.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0}]