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Quiz
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Science
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7th Grade
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Practice Problem
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50 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
L'acidité des lacs dus aux pluies acides peut être neutralisé par l'épandage de substances salines dans le lac
VRAI
FAUX
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
La combustion est une réaction entre un combustible et un comburant qui absorbe de l'énergie
FAUX
VRAI
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Le bois l'essence et le gaz naturel sont des substances comburantes qui brûlent au cours de la réaction de combustion
FAUX
VRAI
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
La photosynthèse a lieu dans des cellules végétales alors que la respiration cellulaire se produit dans les cellules animales
VRAI
FAUX
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Toutes les réactions de combustion dégagent de la chaleur
Vrai
Faux
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Tant qu'un combustible n'a n'a pas atteint son point d'émission la combustion ne peut se produire même si le comburant est présent
Vrai
Faux
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Comme la combustion lente s'étend sur une longue période elle dégage plus de chaleur que la combustion vive
Vrai
faux
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