
hóa cuối kì
Quiz
•
Architecture
•
12th Grade
•
Practice Problem
•
Easy
Tin 24H
Used 3+ times
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25 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
thành phần nào ở cơ thể người có chứa nhiều fe nhất
tóc
xương
máu
da
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
kim loại fe tan hết trong lượng dư dd nào sau đây
NAOH
NaCL
hno3 ĐẶC nguội
h2so4 loãng
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Crom (III) oxit (Cr2O3) có màu gì?
màu vàng
màu đỏ thẩm
màu lục thẫm
màu da cam
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
ở nhiệt độ cao , khí H2 khử được oxit nào sau đây?
Fe2O3
MgO
Al2O3
CaO
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
cho các hợp chất sau : cr2o3, nacro3,k2cr2o7,k2cro4, crcl3,cro3. Số hợp chất trong đó crom có số oxh +3 là.
3
2
1
4
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
cho dãy các kim loại sau : na , k , be , mg, ca . Số kim loại trong dãy PƯ mạnh với nước ở đk thường là.
2
3
5
4
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
muối nào sau đây dễ bị phân hủy khi đun nóng ?
NaHCO3
Na2SO4
CaCL2
Na2CO3
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