
тест ұбт
Authored by Айгерим Болатбеккызы
Chemistry
12th Grade
Used 3+ times

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18 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Молекулалық массасы 164 г/моль болатын зат
NaNO3
Ca(NO3)2
Ca3(PO4)2
KNO3
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Сутектің массалық үлесі ең көп қосылыс
NH3
H2O
PH3
H3PO4
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
20 % -тік ерітінді дайындау үшін 400 г суда NaNO3- тің қандай мөлшерін еріту керек ?
100
400
200
80
50
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
17 литр 40 % тұздың ерітіндісі бар ыдысқа 8 литр су қосылды. Алынған ерітіндінің пайыздық концентрациясын табыңыз (%) :
27,2%
73,2%
42,2%
36,2%
53,2%
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Оттегінің көмірқышқыл газы бойынша тығыздығы
0,2
1,7
0,73
0,6
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Ауаның қалыпты жағдайдағы тығыздығы
1,32
1,29
2,33
1,53
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Cr+H2O=Cr2O3+H2 реакциясын теңестіріп, барлық коэффициенттер қосындысын тап
5
11
7
9
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