Quiz — 63bae502794e9_COURS OEF SC.pdf

Question 1 sur 10 20:00

[{"id":46658,"question":"Quelle est la formule de la vitesse (v) en fonction de la distance (d) et du temps (t) ?","option_a":"v = d × t","option_b":"v = d \/ t","option_c":"v = t \/ d","option_d":"v = d + t","option_e":"","option_f":"","bonne_reponse":"b","explication":"La vitesse est calculée en divisant la distance parcourue par le temps écoulé : v = d \/ t.","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 = d + t\"","_debug_options_count":4},{"id":46659,"question":"En chimie, une solution acide a un pH inférieur à 7.","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"a","explication":"Une solution acide a effectivement un pH inférieur à 7, ce qui indique une concentration élevée en ions H+.","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":46660,"question":"Quelle est la loi qui relie la tension (U), l’intensité (I) et la résistance (R) dans un circuit électrique ?","option_a":"Loi de Boyle-Mariotte","option_b":"Loi d’Ohm","option_c":"Loi de Lavoisier","option_d":"Loi de Newton","option_e":"","option_f":"","bonne_reponse":"b","explication":"La loi d’Ohm stipule que 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\": \"b\", \"options\": {\"a\": \"Loi de Boyle-Mariotte\", \"b\": \"Loi d’Ohm\", \"c\": \"Loi de Lavoisie","_debug_options_count":4},{"id":46661,"question":"La photosynthèse permet aux plantes de produire de l’oxygène à partir de CO2 et d’eau.","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 convertissent le CO2 et l’eau en glucose et en oxygène, grâce à l’énergie lumineuse.","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":46662,"question":"Quel est le symbole chimique de l’élément oxygène ?","option_a":"O","option_b":"Ox","option_c":"O2","option_d":"Og","option_e":"","option_f":"","bonne_reponse":"a","explication":"Le symbole chimique de l’oxygène est 'O', tandis que 'O2' représente sa forme moléculaire diatomique.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"a\", \"options\": {\"a\": \"O\", \"b\": \"Ox\", \"c\": \"O2\", \"d\": \"Og\"}}","_debug_options_count":4},{"id":46663,"question":"En physique, l’énergie cinétique (Ec) dépend de la masse (m) et de la vitesse (v) selon la formule :","option_a":"Ec = m × v","option_b":"Ec = 0.5 × m × v²","option_c":"Ec = m \/ v²","option_d":"Ec = m × v²","option_e":"","option_f":"","bonne_reponse":"b","explication":"L’énergie cinétique est donnée par la formule Ec = 0.5 × m × v², où m est la masse et v la vitesse.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"b\", \"options\": {\"a\": \"Ec = m × v\", \"b\": \"Ec = 0.5 × m × v²\", \"c\": \"Ec = m \/ v²\", \"","_debug_options_count":4},{"id":46664,"question":"Un atome est composé d’un noyau central contenant des protons et des neutrons, et d’électrons en mouvement autour du noyau.","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"a","explication":"Cette description correspond bien au modèle atomique de Rutherford, où le noyau contient protons et neutrons, et les électrons gravitent autour.","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":46665,"question":"Quelle est l’unité de mesure de la force dans le système international (SI) ?","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 SI 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":46666,"question":"La mitose est un processus de division cellulaire qui permet la croissance et la réparation des tissus.","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"a","explication":"La mitose est bien un processus de division cellulaire assurant la croissance, la réparation et le renouvellement des cellules.","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":46667,"question":"Quel gaz est produit lors de la combustion complète d’un hydrocarbure ?","option_a":"Dioxyde de soufre (SO2)","option_b":"Monoxyde de carbone (CO)","option_c":"Dioxyde de carbone (CO2)","option_d":"Diazote (N2)","option_e":"","option_f":"","bonne_reponse":"c","explication":"La combustion complète d’un hydrocarbure produit du dioxyde de carbone (CO2) et de l’eau, contrairement à la combustion incomplète qui produit du monoxyde de carbone (CO).","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"c\", \"options\": {\"a\": \"Dioxyde de soufre (SO2)\", \"b\": \"Monoxyde de carbone (CO)\", \"c\": \"","_debug_options_count":4}]