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Authored by Hải Vy Ngô undefined
Science
11th Grade
Used 1+ times

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21 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
trong tự nhiên, đơn chất nitrogen có nhiều
nước biển
ko khí
cơ thể ng
mỏ khoáng
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
liên kết hòa học trong phân tử nh3
cộng hóa trị k cực
cht có cực
ion
kim loại
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
tạo độ xốp cho bánh
(nh4)2so4
caco3
nh4hco3
nh4no2
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
s nào tính khử
so2
h2s
na2so4
h2so4
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
dd h2so4 loãng pứ với kim loại
cu, na
mg, al
ag, zn
au, pt
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
thu nitrogen bằng pp dời nc vì
n2 nhẹ hơn kk
n2
ko duy trì sự sống
n2 hóa lỏng hóa rắn ở ndd thấ
n2 ít tan trong nc
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
phân biệt được dd nh4cl và nacl dùng thuốc thử
kcl
koh
kno3
k2so4
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