Quiz — Lycée Pilote Sfax - DC 3 2012.pdf

Question 1 sur 10 20:00

[{"id":33000,"question":"Quelle est l'unité de mesure de la force dans le système international ?","option_a":"Newton (N)","option_b":"Joule (J)","option_c":"Watt (W)","option_d":"Pascal (Pa)","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\": \"Joule (J)\", \"c\": \"Watt (W)\", \"d\": \"Pascal (Pa)","_debug_options_count":4},{"id":33001,"question":"La loi d'Ohm s'exprime par la formule : U = R × I. Vrai ou Faux ?","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"a","explication":"La loi d'Ohm s'exprime bien par 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":33002,"question":"Quel est le pH d'une solution neutre à 25°C ?","option_a":"pH = 0","option_b":"pH = 7","option_c":"pH = 14","option_d":"pH = 10","option_e":"","option_f":"","bonne_reponse":"b","explication":"À 25°C, une solution neutre a un pH de 7. Un pH inférieur à 7 indique une solution acide, et supérieur à 7 une solution basique.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"b\", \"options\": {\"a\": \"pH = 0\", \"b\": \"pH = 7\", \"c\": \"pH = 14\", \"d\": \"pH = 10\"}}","_debug_options_count":4},{"id":33003,"question":"La vitesse d'un objet en mouvement rectiligne uniforme est constante. Vrai ou Faux ?","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"a","explication":"En mouvement rectiligne uniforme, la vitesse est constante en direction, sens et intensité.","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":33004,"question":"Quelle est la formule de l'énergie cinétique ?","option_a":"E_c = m × g × h","option_b":"E_c = ½ × m × v²","option_c":"E_c = P × t","option_d":"E_c = m × c²","option_e":"","option_f":"","bonne_reponse":"b","explication":"L'énergie cinétique est donnée par la formule E_c = ½ × 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\": \"E_c = m × g × h\", \"b\": \"E_c = ½ × m × v²\", \"c\": \"E_c = P ×","_debug_options_count":4},{"id":33005,"question":"La réaction entre un acide et une base produit toujours de l'eau et un sel. Vrai ou Faux ?","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"a","explication":"Une réaction acido-basique produit généralement de l'eau et un sel, mais ce n'est pas systématique (exemple : réaction avec un acide carboxylique).","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":33006,"question":"Quel est le symbole chimique de l'élément oxygène ?","option_a":"O","option_b":"Ox","option_c":"Og","option_d":"Oy","option_e":"","option_f":"","bonne_reponse":"a","explication":"Le symbole chimique de l'oxygène est O, dérivé de son nom latin 'Oxygenium'.","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\": \"Oy\"}}","_debug_options_count":4},{"id":33007,"question":"La résistance électrique d'un conducteur dépend de sa longueur et de sa section. Vrai ou Faux ?","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"a","explication":"La résistance électrique d'un 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":33008,"question":"Quelle est la relation entre la puissance électrique (P), la tension (U) et l'intensité (I) ?","option_a":"P = U × I","option_b":"P = U \/ I","option_c":"P = I \/ U","option_d":"P = U² \/ R","option_e":"","option_f":"","bonne_reponse":"a","explication":"La puissance électrique est donnée par 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 = U \/ I\", \"c\": \"P = I \/ U\", \"d\": \"P = U² \/ ","_debug_options_count":4},{"id":33009,"question":"La loi de conservation de la masse s'applique-t-elle aux réactions chimiques ?","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"a","explication":"La loi de conservation de la masse, énoncée par Lavoisier, s'applique aux réactions chimiques : la masse des réactifs est égale à la masse des produits.","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}]