Quiz — phy cntrl 1 2024-2025.pdf

Question 1 sur 10 20:00

[{"id":37710,"question":"Quelle est l’unité de mesure de la masse volumique ?","option_a":"A. kg\/m³","option_b":"B. g\/cm³","option_c":"C. kg\/L","option_d":"D. Toutes les réponses sont correctes","option_e":"","option_f":"","bonne_reponse":"d","explication":"La masse volumique s’exprime en kg\/m³ dans le système international, mais peut aussi être donnée en g\/cm³ ou kg\/L selon les contextes.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"d\", \"options\": {\"a\": \"A. kg\/m³\", \"b\": \"B. g\/cm³\", \"c\": \"C. kg\/L\", \"d\": \"D. Toutes les","_debug_options_count":4},{"id":37711,"question":"Une transformation chimique conserve toujours la masse totale.","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"a","explication":"C’est vrai : selon la loi de Lavoisier, la masse totale des réactifs est égale à celle 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},{"id":37712,"question":"Quelle formule relie la vitesse, la distance et le temps ?","option_a":"A. v = d × t","option_b":"B. v = d \/ t","option_c":"C. v = t \/ d","option_d":"D. v = d + t","option_e":"","option_f":"","bonne_reponse":"b","explication":"La vitesse est égale à la distance parcourue divisée 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\": \"A. v = d × t\", \"b\": \"B. v = d \/ t\", \"c\": \"C. v = t \/ d\", \"d\": \"D","_debug_options_count":4},{"id":37713,"question":"Dans une solution acide, le pH est toujours inférieur à 7.","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"a","explication":"Un pH inférieur à 7 indique une solution acide, tandis qu’un pH supérieur à 7 indique une solution basique.","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":37714,"question":"Quelle est la charge électrique d’un électron ?","option_a":"A. +1,6 × 10⁻¹⁹ C","option_b":"B. -1,6 × 10⁻¹⁹ C","option_c":"C. 0 C","option_d":"D. +9,1 × 10⁻³¹ kg","option_e":"","option_f":"","bonne_reponse":"b","explication":"L’électron porte une charge négative de -1,6 × 10⁻¹⁹ coulombs.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"b\", \"options\": {\"a\": \"A. +1,6 × 10⁻¹⁹ C\", \"b\": \"B. -1,6 × 10⁻¹⁹ C\", \"c\": \"C","_debug_options_count":4},{"id":37715,"question":"La combustion du méthane (CH₄) 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 réaction de combustion du méthane est : 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":37716,"question":"Quelle est la relation entre la force, la masse et l’accélération ?","option_a":"A. F = m × a","option_b":"B. F = m \/ a","option_c":"C. F = a \/ m","option_d":"D. F = m + a","option_e":"","option_f":"","bonne_reponse":"a","explication":"La deuxième loi de Newton stipule que la force est égale au produit de la masse par l’accélération : F = m × a.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"a\", \"options\": {\"a\": \"A. F = m × a\", \"b\": \"B. F = m \/ a\", \"c\": \"C. F = a \/ m\", \"d\": \"D","_debug_options_count":4},{"id":37717,"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 neutre lorsque le nombre de protons (chargés positivement) est égal au nombre 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":37718,"question":"Quelle est la formule de l’acide chlorhydrique ?","option_a":"A. HCl","option_b":"B. H₂SO₄","option_c":"C. NaOH","option_d":"D. CO₂","option_e":"","option_f":"","bonne_reponse":"a","explication":"L’acide chlorhydrique a pour formule HCl, composée d’un ion hydrogène H⁺ et d’un ion chlorure Cl⁻.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"a\", \"options\": {\"a\": \"A. HCl\", \"b\": \"B. H₂SO₄\", \"c\": \"C. NaOH\", \"d\": \"D. CO₂\"}}","_debug_options_count":4},{"id":37719,"question":"La lumière blanche est composée de toutes les couleurs de l’arc-en-ciel.","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"a","explication":"La lumière blanche est un mélange de toutes les longueurs d’onde visibles, ce qui donne les couleurs de l’arc-en-ciel.","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}]