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Question 1 sur 10 10:00

[{"id":41856,"question":"Quelle est la formule de l'aire d'un cercle de rayon r ?","option_a":"A = πr","option_b":"A = 2πr","option_c":"A = πr²","option_d":"A = 4πr²","option_e":"","option_f":"","bonne_reponse":"C","explication":"La formule correcte est A = πr², où π (pi) est une constante approximativement égale à 3,14.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":41857,"question":"Le triangle ABC est rectangle en A. Si AB = 3 cm et AC = 4 cm, alors BC mesure :","option_a":"5 cm","option_b":"6 cm","option_c":"7 cm","option_d":"8 cm","option_e":"","option_f":"","bonne_reponse":"A","explication":"D'après le théorème de Pythagore, BC² = AB² + AC² = 9 + 16 = 25, donc BC = 5 cm.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":41858,"question":"La photosynthèse permet aux plantes de produire de l'oxygène.","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"A","explication":"La photosynthèse est le processus par lequel les plantes produisent de l'oxygène à partir de dioxyde de carbone et de lumière.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":41859,"question":"Quelle est la capitale de la Tunisie ?","option_a":"Sousse","option_b":"Tunis","option_c":"Sfax","option_d":"Gabès","option_e":"","option_f":"","bonne_reponse":"B","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":41860,"question":"La loi d'Ohm s'exprime par la formule :","option_a":"U = R\/I","option_b":"U = R × I","option_c":"I = U × R","option_d":"R = U\/I","option_e":"","option_f":"","bonne_reponse":"B","explication":"La loi d'Ohm s'écrit U = R × I, où U est la tension, R la résistance et I l'intensité du courant.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":41861,"question":"Le verbe 'être' est un verbe du 1er groupe.","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"B","explication":"Le verbe 'être' est un verbe du 3e groupe, car il ne se conjugue pas comme les verbes en -er.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":41862,"question":"Quel est le résultat de 7 × (3 + 5) ?","option_a":"35","option_b":"40","option_c":"56","option_d":"63","option_e":"","option_f":"","bonne_reponse":"B","explication":"D'après les règles de priorité, on calcule d'abord la parenthèse : 3 + 5 = 8, puis 7 × 8 = 56.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":41863,"question":"La Terre tourne autour du Soleil en environ :","option_a":"24 heures","option_b":"365 jours","option_c":"1 mois","option_d":"1 semaine","option_e":"","option_f":"","bonne_reponse":"B","explication":"La Terre effectue une révolution autour du Soleil en environ 365 jours, ce qui définit une année.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":41864,"question":"Le mot 'intrépide' signifie :","option_a":"Peur","option_b":"Courageux","option_c":"Timide","option_d":"Rapide","option_e":"","option_f":"","bonne_reponse":"B","explication":"Le mot 'intrépide' signifie 'qui n'a pas peur', c'est-à-dire courageux.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":41865,"question":"La division de 120 par 8 donne :","option_a":"12","option_b":"15","option_c":"18","option_d":"20","option_e":"","option_f":"","bonne_reponse":"B","explication":"120 ÷ 8 = 15, car 8 × 15 = 120.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0}]