Fill in the blanks1. In the preparation of acetic acid from acetaldehy

Fill in the blanks1. In the preparation of acetic acid from acetaldehyde the catalyst used in ……2. The catalyst used in the hydroformylation of olefins is ……3. ……catalyst is used in polymerization of propylene.4. Metallic carbides are chemically …….5. Except Scandium all other 3d series transition elements form …. metal oxides. 6. Cr2O3 …… is and CrO is ……. in nature. 7. Mn2O7 dissolves in water to give ….8. On heating potassium dichromate, it decomposes to give …… and molecular oxygen.9. Potassium dichromate is a powerful ……agent in acidic medium.10. …. is used in leather tanneries for chrome tanning

Answer»

1. Rh/Ir complex

2. CO₂(CO)₈

3. Zeigler – Natta (or) TiCl₄ + Al(C₂H₅)₃

4. inert

5. ionic

6. amphoteric, basic

7. permanganic acid (HMnO₄)

8. Chromium (III) oxide – Cr₂O₃

9. Potassium dichrom.ate

10. iron compounds, iodides