
9 аа
Authored by Араи Оразова
Biology
9th Grade

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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
1. H2SO4 затындағы күкірттің массалық үлесі тең:
A) 98 B) 64 C) 32,6 D)22, Е) 10,8
98
64
32
22
10.8
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
2. Қ.ж 3,2 моль азот қандай көлем алады: A) 22,4 л B) 71,68 л C) 77 л D)91 л Е)28л
А
В
С
Д
Е
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
3. Na+HCI → X +H2: схемадағы «Х» затын және оның алдындағы коэффициент:
A)NaH B) NaCI C) 2NaCI D) NaHCI E) 3NaCI
А
В
С
Д
Е
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
4. Ауадағы оттектің үлесі: A) 100% B) 98% С) 50% D)21% Е) 32%
А
В
С
Д
Е
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
5. Сутек мына затпен әректтеспейді: А)СuО В)НС1 C)N2 D)O2 E)Na
А
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Е
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
6. Электрондық формуласы 1s22s22p63s23p6 мына атомға сәйкес келеді:
A)Na B)Mg C)AI D)Ar Е)Р
А
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Д
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7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
7. 20 гр натрий гидроксидімен әрекеттесетін азот қышқылының массасы;
A) 33,5 г B) 34,5 г C) 36,5 г D) 31,5 г E) 32,5 г
А
В
С
Д
Е
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