
hóa 10 cuối kì 2
Authored by Bảo Lâm
Chemistry
University
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Câu 1: Oxi thuộc nhóm VIA trong bảng tuần hoàn. Số electron lớp ngoài cùng của nguyên tử oxi là
A.4.
B.5
C.6
D. 7.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Câu 2: Ở điều kiện thường, ozon không tác dụng được với kim loại nào sau đây?
A. Ag.
B. Cu.
C. Au.
D. Zn.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Câu 3: Hiđro sunfua có công thức là
A. H2S.
B. SO3.
C. SO2.
D. H2SO4.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Câu 4: Số nguyên tử oxi trong phân tử lưu huỳnh đioxit là
A. 1.
B. 2.
C. 3.
D. 4.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Câu 5: Ở điều kiện thường, lưu huỳnh trioxit là chất
A. khí, mùi trứng thối.
B. lỏng, không màu.
C. khí, mùi hắc.
D. khí, không màu.
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Câu 6: Chất nào sau đây nhận biết được ion sunfat SO42-?
A. Ba(OH)2.
B. HCl.
C. KNO3.
D. HNO3.
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Câu 7: Muốn pha loãng H2SO4 đặc, phải rót
A. từ từ axit vào nước.
B. từ từ nước vào axit.
C. nhanh axit vào nước.
D. nhanh nước vào axit.
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