Quiz — examen 2s d 2s.pdf

Question 1 sur 10 20:00

[{"id":20679,"question":"Quelle est l’unité de mesure de la force dans le système international ?","option_a":"Newton (N)","option_b":"Pascal (Pa)","option_c":"Joule (J)","option_d":"Watt (W)","option_e":"","option_f":"","bonne_reponse":"a","explication":"L’unité de mesure de la force dans le système international est le Newton (N), en hommage à Isaac Newton.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"a\", \"options\": {\"a\": \"Newton (N)\", \"b\": \"Pascal (Pa)\", \"c\": \"Joule (J)\", \"d\": \"Watt (W)","_debug_options_count":4},{"id":20680,"question":"La loi d’Ohm s’applique uniquement aux conducteurs ohmiques.","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"a","explication":"La loi d’Ohm (U = R × I) s’applique uniquement aux conducteurs ohmiques, c’est-à-dire ceux dont la résistance est constante.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"a\", \"options\": {\"a\": \"Vrai\", \"b\": \"Faux\", \"c\": \"\", \"d\": \"\"}}","_debug_options_count":4},{"id":20681,"question":"Quel est le rôle principal des chloroplastes dans une cellule végétale ?","option_a":"Stockage des nutriments","option_b":"Photosynthèse","option_c":"Production d’énergie (respiration)","option_d":"Synthèse des protéines","option_e":"","option_f":"","bonne_reponse":"b","explication":"Les chloroplastes sont les organites responsables de la photosynthèse, processus permettant aux plantes de produire de la matière organique à partir de lumière.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"b\", \"options\": {\"a\": \"Stockage des nutriments\", \"b\": \"Photosynthèse\", \"c\": \"Production","_debug_options_count":4},{"id":20682,"question":"La tension aux bornes d’un conducteur ohmique est proportionnelle à l’intensité du courant qui le traverse.","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"a","explication":"C’est l’énoncé de la loi d’Ohm : 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,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"a\", \"options\": {\"a\": \"Vrai\", \"b\": \"Faux\", \"c\": \"\", \"d\": \"\"}}","_debug_options_count":4},{"id":20683,"question":"Quelle est la formule de la vitesse moyenne ?","option_a":"v = d × t","option_b":"v = d \/ t","option_c":"v = t \/ d","option_d":"v = a × t","option_e":"","option_f":"","bonne_reponse":"b","explication":"La vitesse moyenne se calcule par la formule v = d \/ t, où d est la distance parcourue et t le temps mis.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"b\", \"options\": {\"a\": \"v = d × t\", \"b\": \"v = d \/ t\", \"c\": \"v = t \/ d\", \"d\": \"v = a × t","_debug_options_count":4},{"id":20684,"question":"Un atome est électriquement neutre car il contient autant de protons que d’électrons.","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"a","explication":"Un atome est électriquement neutre car il contient un nombre égal de protons (chargés positivement) et d’électrons (chargés négativement).","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"a\", \"options\": {\"a\": \"Vrai\", \"b\": \"Faux\", \"c\": \"\", \"d\": \"\"}}","_debug_options_count":4},{"id":20685,"question":"Quel est le gaz produit lors de la photosynthèse ?","option_a":"Dioxygène (O₂)","option_b":"Dioxyde de carbone (CO₂)","option_c":"Azote (N₂)","option_d":"Vapeur d’eau (H₂O)","option_e":"","option_f":"","bonne_reponse":"a","explication":"Lors de la photosynthèse, les plantes produisent du dioxygène (O₂) en tant que sous-produit de la réaction.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"a\", \"options\": {\"a\": \"Dioxygène (O₂)\", \"b\": \"Dioxyde de carbone (CO₂)\", \"c\": \"Azot","_debug_options_count":4},{"id":20686,"question":"La résistance électrique d’un fil conducteur dépend de sa longueur et de sa section.","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"a","explication":"La résistance électrique d’un fil conducteur dépend de sa longueur, de sa section et de la nature du matériau (loi de Pouillet).","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"a\", \"options\": {\"a\": \"Vrai\", \"b\": \"Faux\", \"c\": \"\", \"d\": \"\"}}","_debug_options_count":4},{"id":20687,"question":"Quelle est l’équation bilan de la combustion complète du méthane (CH₄) ?","option_a":"CH₄ + 2O₂ → CO₂ + 2H₂O","option_b":"CH₄ + O₂ → CO + 2H₂O","option_c":"CH₄ + 2O₂ → C + 2H₂O","option_d":"2CH₄ + O₂ → 2CO + 4H₂","option_e":"","option_f":"","bonne_reponse":"a","explication":"La combustion complète du méthane produit du dioxyde de carbone (CO₂) et de l’eau (H₂O), selon l’équation : CH₄ + 2O₂ → CO₂ + 2H₂O.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"a\", \"options\": {\"a\": \"CH₄ + 2O₂ → CO₂ + 2H₂O\", \"b\": \"CH₄ + O₂ → CO + 2H","_debug_options_count":4},{"id":20688,"question":"Le noyau d’un atome est composé de protons et de neutrons.","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"a","explication":"Le noyau d’un atome est composé de protons (chargés positivement) et de neutrons (sans charge), tandis que les électrons gravitent autour du noyau.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"a\", \"options\": {\"a\": \"Vrai\", \"b\": \"Faux\", \"c\": \"\", \"d\": \"\"}}","_debug_options_count":4}]