hoa hoc

Quiz

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Others

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12th Grade

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Medium

sang đào

Used 12+ times

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47 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

để bảo vệ vỏ tàu biển …

Ag

Na

Zn

Cu

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

ngtac điều chế KL

Khử ion

Khử ngtu

Oxi hoá KL

Oxi hoá ngtu

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

KL điều chế thuỷ luyện

Mg

Ca

Cu

K

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

KL điều chế pp đphan nóng chảy

fe

na

cu

ag

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Dãy Kl điều chế pp đphan nóng chảy

al,na,ba

ca,ni,zn

mg,fe,cu

fe,cr,cu

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Điện phân CaCl2 nóng chảy tại cực dương xảy ra

khử ion cl-

khử ca2+

oxi hoá ion ca2+

oxi hoá ion cl-

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

T cao , khí co khử oxit nào

fe2o3 và cuo

al2o3 và cuo

mgo và fe2o3

cao và mgo

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