| 1 |
The percentage of carbon in different types of iron products is in the order of |
- A. cast iron > wrought iron > steel
- B. wrought iron > steel > cast iron
- C. cast iron > steel > wrought iron
- D. cast iron = steel > wrought iron
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| 2 |
Group VI-B of transition elements contains |
- A. Zn, Cd, Hg
- B. Fe, Ru, Os
- C. Cr, Mo, W
- D. Mn, Te, Re
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| 3 |
The conversion of potassium magnate to potassium permanganate by passing Cl2 Through aqueous solution of K2MnO4 is called. |
- A. Contact process
- B. Open hearth process
- C. Stadeler's process
- D. Thermite process
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| 4 |
Which one of the following elements shows variable valency, can act as a catalyst and form coloured compounds. |
- A. Carbon
- B. Chlorine
- C. Sulpur
- D. Iron
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| 5 |
The chemical composition of pyrolusite is. |
- A. KMnO4
- B. K2MnO4
- C. MnO2
- D. MnO
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| 6 |
Which of the following is a typical transition metal |
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| 7 |
Typical transition element is |
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| 8 |
Co-ordination number of Cu in |
- A. Zero
- B. Two
- C. Four
- D. Six
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| 9 |
The strength of binding energy of transition elements depend upon |
- A. number of electron pairs
- B. number of unpaired electron pairs
- C. number of neutrons
- D. number of protons
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| 10 |
Which of the following is a typical transition metal. |
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