
Khởi động 25.5.24
Authored by SANG thanh
Chemistry
12th Grade
Used 2+ times

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20 questions
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1.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Polime nào sau đây được dùng để sản xuất cao su?
Polibutađien.
Poli(vinyl clorua).
Polietilen.
Poliacrilonitrin.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Công thức của crom(VI) oxit là
CrO.
Cr2O3.
CrO3.
Cr(OH)3.
3.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Muối ngậm nước CaSO4.2H2O có tên thường gọi là
Đá vôi.
Thạch cao sống.
Thạch cao nung.
Thạch nhũ.
4.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Tên gọi của este có công thức cấu tạo HCOOC2H5 là
metyl fomat.
etyl fomat.
etyl axetat.
etyl propionat.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Kim loại nào sau đây bền trong không khí và nước do có màng oxit bảo vệ?
Fe.
Cu.
Na.
Al.
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Trong bảng tuần hoàn, kim loại kiềm thuộc nhóm
IA.
IIA.
IIIA.
IB.
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Số nguyên tử oxi trong phân tử Gly–Ala – Gly là
3.
4.
5.
6.
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