1 |
Which element shows highest oxidation state among these |
|
2 |
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
|
3 |
Element of which group are called non typical transition elements. |
- A. IB
- B. II B
- C. II A
- D. VII B
|
4 |
The percentage of carbon is 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
|
5 |
Group VI B of transition elements contains. |
- A. Zn, Cd, Hg
- B. Fe, Ru,Os
- C. Cr, Mo, W
- D. Mn, Te, Re
|
6 |
Which of the following is a typical transition metal |
|
7 |
Typical transition element is |
|
8 |
The chemical composition of pyrolusite is. |
- A. KMnO4
- B. K2MnO4
- C. MnO2
- D. MnO
|
9 |
Which is not an ore of iron |
- A. haematite
- B. Magnetite
- C. limonite
- D. Cassiterite
|
10 |
The colour of transition metal complexes is due to |
- A. d-d transition of electrons
- B. Paramagnetic nature of transition elements
- C. Ionization
- D. Loss of s -electrons
|