Saved Bookmarks
This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your knowledge and support exam preparation. Choose a topic below to get started.
| 451. |
State the main constituent metal in each alloy : 1. Duralumin 2. Brass 3. Stainless steel |
|
Answer» 1. Aluminium 2. Copper 3. Iron |
|
| 452. |
State the property of the metal being utilized in the following : 1. Zinc in Galvanization 2. Aluminium in Thermite welding |
|
Answer» Use of metal : (a) Zinc in Galvanization (b) Aluminium in Thermite welding Property : (a) Zinc forms a protective layer of zinc oxide which prevents rusting of iron. (b) Strong affinity for oxygen. |
|
| 453. |
Correct the following statements. — Haematite is the chief ore of aluminium. |
|
Answer» Haematite is the chief ore of iron. OR Bauxite is the chief ore of aluminium. |
|
| 454. |
The metal oxide which can react with acid as well as alkali is : A. Silver oxide B. Copper (II) oxide C. Aluminium oxide D. Calcium oxide |
|
Answer» C. Aluminium oxide |
|