Хром
6th - 12th Grade
•13 Qs
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Хром
Quiz
•
Science
•
6th - 12th Grade
•
Hard
Ольга Рябова
Used 5+ times
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13 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
K2CrO4 имеет ... цвет
Желтый
Оранжевый
Синий
Черный
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Степень окисления хрома в соединении K2Cr2O7 равна
+3
+6
0
+2
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Степень окисления хрома в соединении Cr2O3 равна
+3
+2
+4
+6
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Какое соединение имеет зеленый цвет?
Cr(OH)3
K2CrO4
K2Cr2O7
CrO
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Атомная масса хрома равна
52
24
6
4
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Самый большие месторождения хрома занимает страна ...
ЮАР
Россия
Франция
США
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Какой из оксидов относится к кислотным?
CrO
Cr2O3
CrO3
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