| 1 |
The earth is made up of ___________ % of calcium. |
|
| 2 |
The core of the earth is ____________ than crust. |
- A. LIghter
- B. Heavier
- C. Both
- D. Nil
|
| 3 |
Non-metals are generally soft, but which one of the following is extremely hard?<br> |
- A. Graphite <br>
- B. Phosphorus <br>
- C. Iodine<br>
- D. Diamond<br>
|
| 4 |
Which of the following is less malleable?<br> |
- A. Sodium<br>
- B. Iron<br>
- C. Gold <br>
- D. Sliver <br>
|
| 5 |
Which one of the following will not react with dilute HCI?<br> |
- A. Sodium<br>
- B. Potassium<br>
- C. Calcium<br>
- D. Carbon<br>
|
| 6 |
All are noble metals except: |
- A. Silver
- B. Gold
- C. Hydrogen
- D. Platinum
|
| 7 |
The core of the earth is mostly made from ____________ |
- A. Nickel
- B. Iron
- C. A % B
- D. Copper
|
| 8 |
Halogens with metals for |
- A. Ionic bond
- B. Covalent bond
- C. Dative covalent bond
- D. Metallic bond
|
| 9 |
All metals are solid except |
|
| 10 |
Which one of the following is brittle?<br> |
- A. Sodium<br>
- B. Aluminum <br>
- C. Selenium<br>
- D. Magnesium <br>
|
