Entry Test MCQ :: Transition Elements
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21. |
Geometry of the complex compounds usually depends upon |
A. |
type of ligands |
B. |
types of hybridization in the elements of ligands |
C. |
hybridization of central metal |
D. |
All of above |
Answer: Option C
Explanation:
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22. |
When the central atom of coordination compound is sp3d2 hybridization the expected geometry will be |
A. |
tetrahedral |
B. |
square planar |
C. |
trigonal bipyramidal |
D. |
octahedral |
Answer: Option D
Explanation:
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23. |
In pig iron the concentration of C-atom is |
A. |
0.12 --- 0.25% |
B. |
2.5 --- 4.5% |
C. |
2.0 --- 4.0% |
D. |
0.25 --- 2.5% |
Answer: Option B
Explanation:
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24. |
In the production of wrought iron Mg Si and P are removed in the form of |
A. |
oxides |
B. |
silicates |
C. |
slag |
D. |
carbonates |
Answer: Option C
Explanation:
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25. |
With impurities like P and S the open hearth furnace is lined with. |
Answer: Option D
Explanation:
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26. |
The oxidation number in [MnO4]-2 |
Answer: Option C
Explanation:
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27. |
Which is sold as fertilizer |
A. |
CaSiO3 |
B. |
Na2SiO3 |
C. |
Ca3(PO4)2 |
D. |
MnSiO3 |
Answer: Option C
Explanation:
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28. |
Any process of chemical decay of metals due to the action of surrounding medium is called |
A. |
activation |
B. |
enameling |
C. |
corrosion |
D. |
coating |
Answer: Option C
Explanation:
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29. |
When an active metal like Al comes in contact with less active element like Cu then it produces |
A. |
dry cell |
B. |
galvanic cell |
C. |
electrolytic cell |
D. |
a and b |
Answer: Option B
Explanation:
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30. |
Which of the following is typical transition metal? |
Answer: Option D
Explanation:
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