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Authored by ФЕРУЗА АБСАТТАРОВА
Chemistry
9th Grade
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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Число электронов на внешнем уровне у атома азота ..
2
3
5
4
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Элемент азот находится в периодической системе:
в первой группе;
в третьей группе;
в пятой группе;
в седьмой группе
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Содержание азота в атмосфере:
1%
78%
16%
21%
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Почему азот является пассивным газом?
имеет двойную связь
не имеет тройную связь
связь нет
имеет тройную связь
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Безжизненный газ - это ...
Азот
Сера
Алюминий
Натрий
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Как получают азота в промышленности?
электролизом
ректификационным очищением
не получают
разложением аммиака
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
в 1772 году кто назвал азота ядовитом воздухом?
Антуан Лавуазье
Карл Шееле
Даниел Резерфорд
Д.И. Менделеева
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