
Đề Khảo Sát Chất Lượng HSG Môn KHTN
Quiz
•
Science
•
2nd Grade
•
Medium
Phô Mai
Used 2+ times
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63 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the carbon content in the alloy called steel?
From 2% to 6%
Below 2%
From 2% to 5%
Above 6%
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which pair of substances does not react?
ZnSO4 and Mg
CuSO4 and Ag
CuCl2 and Al
CuSO4 and Fe
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
To produce metals Na, Mg, Ca in industry, which method is used?
Electrolysis of saturated chloride salt solution with a partition.
Using H2 or CO to reduce the corresponding metal oxide at high temperature.
Using metal K to react with the corresponding chloride salt solution.
Electrolysis of molten corresponding chloride salt.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The order of reactivity of metals X, Y, Z, T is as follows:
T, Z, X, Y
Z, T, X, Y
Y, X, T, Z
Z, T, Y, X
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
When CO gas is passed into a heated tube containing a mixture X of Al2O3, MgO, Fe3O4, CuO, what is the residue Y?
MgO, Fe3O4, Cu.
MgO, Fe, Cu.
Mg, Fe, Cu.
Mg, Al, Fe, Cu.
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How is iron Fe directly produced from Fe2O3?
Hydraulic method
Electrolysis of solution.
Thermal method
Electrolysis of molten.
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which statement is correct?
The melting point of metal W is lower than that of metal Al.
Metal Fe conducts electricity better than metal Ag.
Metal K is less hard than metal Cr.
Metal Fe does not react with concentrated hot H2SO4 solution.
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