Quiz — Le Complet Physique et Chimie.pdf

Question 1 sur 10 20:00

[{"id":40220,"question":"Quelle est la formule reliant la vitesse, la distance et le temps ?","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 (d) par le temps écoulé (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":40221,"question":"La lumière blanche est composée de plusieurs couleurs.","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"a","explication":"La lumière blanche est effectivement composée de plusieurs couleurs (spectre visible) comme le montre le prisme.","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":40222,"question":"Quel est le symbole chimique de l'oxygène ?","option_a":"O","option_b":"Ox","option_c":"Og","option_d":"O2","option_e":"","option_f":"","bonne_reponse":"a","explication":"Le symbole chimique de l'oxygène est 'O'. '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\": \"Og\", \"d\": \"O2\"}}","_debug_options_count":4},{"id":40223,"question":"La loi d'Ohm s'exprime par la formule :","option_a":"U = R × I","option_b":"P = U × I","option_c":"R = U × I","option_d":"I = U \/ R","option_e":"","option_f":"","bonne_reponse":"a","explication":"La loi d'Ohm relie la tension (U), la résistance (R) et l'intensité (I) par U = R × I.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"a\", \"options\": {\"a\": \"U = R × I\", \"b\": \"P = U × I\", \"c\": \"R = U × I\", \"d\": \"I = U \/ ","_debug_options_count":4},{"id":40224,"question":"Un atome est électriquement neutre car :","option_a":"Il n'a pas de protons","option_b":"Il a autant d'électrons que de protons","option_c":"Il est composé uniquement de neutrons","option_d":"Il est très petit","option_e":"","option_f":"","bonne_reponse":"b","explication":"Un atome est neutre car il possède autant de protons (chargés positivement) que 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\": \"b\", \"options\": {\"a\": \"Il n'a pas de protons\", \"b\": \"Il a autant d'électrons que de pro","_debug_options_count":4},{"id":40225,"question":"La combustion du méthane produit du dioxyde de carbone et de l'eau.","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"a","explication":"La combustion complète du méthane (CH4) donne du 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\": \"Vrai\", \"b\": \"Faux\", \"c\": \"\", \"d\": \"\"}}","_debug_options_count":4},{"id":40226,"question":"Quelle est l'unité de la concentration molaire ?","option_a":"g\/L","option_b":"mol\/L","option_c":"mol\/m³","option_d":"kg\/m³","option_e":"","option_f":"","bonne_reponse":"b","explication":"La concentration molaire s'exprime en moles par litre (mol\/L).","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"b\", \"options\": {\"a\": \"g\/L\", \"b\": \"mol\/L\", \"c\": \"mol\/m³\", \"d\": \"kg\/m³\"}}","_debug_options_count":4},{"id":40227,"question":"La tension électrique se mesure avec un :","option_a":"Ampèremètre","option_b":"Voltmètre","option_c":"Ohmmètre","option_d":"Multimètre","option_e":"","option_f":"","bonne_reponse":"b","explication":"Un voltmètre mesure la tension électrique en volts (V).","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"b\", \"options\": {\"a\": \"Ampèremètre\", \"b\": \"Voltmètre\", \"c\": \"Ohmmètre\", \"d\": \"Multim","_debug_options_count":4},{"id":40228,"question":"Un ion est un atome qui a gagné ou perdu des électrons.","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"a","explication":"Un ion est bien un atome ou une molécule ayant gagné (anion) ou perdu (cation) un ou plusieurs électrons.","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":40229,"question":"La masse volumique d'un corps est donnée par la formule :","option_a":"ρ = m × V","option_b":"ρ = m \/ V","option_c":"ρ = V \/ m","option_d":"ρ = m + V","option_e":"","option_f":"","bonne_reponse":"b","explication":"La masse volumique (ρ) est le rapport de la masse (m) sur le volume (V).","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"b\", \"options\": {\"a\": \"ρ = m × V\", \"b\": \"ρ = m \/ V\", \"c\": \"ρ = V \/ m\", \"d\": \"ρ = m ","_debug_options_count":4}]