Quiz — 186.._KARMOUS.D.S2 4SC. KM 2020. - -mars.pdf

Question 1 sur 10 20:00

[{"id":31560,"question":"Quelle est la formule de la vitesse en physique ?","option_a":"v = d\/t","option_b":"v = t\/d","option_c":"v = d×t","option_d":"v = m×a","option_e":"","option_f":"","bonne_reponse":"a","explication":"La vitesse est définie comme le rapport entre la distance parcourue (d) et le temps (t), soit v = d\/t.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"a\", \"options\": {\"a\": \"v = d\/t\", \"b\": \"v = t\/d\", \"c\": \"v = d×t\", \"d\": \"v = m×a\"}}","_debug_options_count":4},{"id":31561,"question":"Une réaction chimique est-elle toujours exothermique ?","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"b","explication":"Une réaction chimique peut être exothermique (libère de l'énergie) ou endothermique (absorbe de l'énergie).","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"b\", \"options\": {\"a\": \"Vrai\", \"b\": \"Faux\", \"c\": \"\", \"d\": \"\"}}","_debug_options_count":4},{"id":31562,"question":"Quel est le symbole chimique de l'eau ?","option_a":"O2","option_b":"H2O","option_c":"CO2","option_d":"NaCl","option_e":"","option_f":"","bonne_reponse":"b","explication":"Le symbole chimique de l'eau est H2O, composé de deux atomes d'hydrogène et un atome d'oxygène.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"b\", \"options\": {\"a\": \"O2\", \"b\": \"H2O\", \"c\": \"CO2\", \"d\": \"NaCl\"}}","_debug_options_count":4},{"id":31563,"question":"La loi d'Ohm s'applique-t-elle à tous les conducteurs ?","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"b","explication":"La loi d'Ohm (U = R×I) s'applique uniquement aux conducteurs ohmiques, pas aux semi-conducteurs ou supraconducteurs.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"b\", \"options\": {\"a\": \"Vrai\", \"b\": \"Faux\", \"c\": \"\", \"d\": \"\"}}","_debug_options_count":4},{"id":31564,"question":"Quelle est l'unité de mesure de l'énergie en physique ?","option_a":"Joule (J)","option_b":"Watt (W)","option_c":"Newton (N)","option_d":"Pascal (Pa)","option_e":"","option_f":"","bonne_reponse":"a","explication":"L'énergie se mesure en Joules (J) dans le système international.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"a\", \"options\": {\"a\": \"Joule (J)\", \"b\": \"Watt (W)\", \"c\": \"Newton (N)\", \"d\": \"Pascal (Pa)","_debug_options_count":4},{"id":31565,"question":"Un 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":"Un acide a un pH inférieur à 7, tandis qu'une base a un pH supérieur à 7.","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":31566,"question":"Quelle est la formule de la puissance électrique ?","option_a":"P = U×I","option_b":"P = R×I","option_c":"P = U\/I","option_d":"P = E\/t","option_e":"","option_f":"","bonne_reponse":"a","explication":"La puissance électrique se calcule avec P = U×I, où U est la tension 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\": \"P = U×I\", \"b\": \"P = R×I\", \"c\": \"P = U\/I\", \"d\": \"P = E\/t\"}}","_debug_options_count":4},{"id":31567,"question":"La photosynthèse est-elle une réaction endothermique ?","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"a","explication":"La photosynthèse absorbe de l'énergie lumineuse, ce qui en fait une réaction endothermique.","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":31568,"question":"Quel est le rôle d'un catalyseur dans une réaction chimique ?","option_a":"Augmenter la température","option_b":"Accélérer la réaction","option_c":"Diminuer la quantité de produits","option_d":"Changer la nature des produits","option_e":"","option_f":"","bonne_reponse":"b","explication":"Un catalyseur accélère une réaction chimique sans être consommé et sans modifier les produits finaux.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"b\", \"options\": {\"a\": \"Augmenter la température\", \"b\": \"Accélérer la réaction\", \"c\":","_debug_options_count":4},{"id":31569,"question":"La tension électrique se mesure-t-elle en volts ?","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"a","explication":"Oui, la tension électrique se mesure en volts (V) dans le système international.","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}]