| 1 |
____________ Metals are electronegative in nature. |
- A. Pure-
- B. Noble-
- C. Non-
- D. Nil
|
| 2 |
___________ is a pure substance that can be broken down. |
- A. Matter
- B. Element
- C. Mass
- D. Mixture
|
| 3 |
The oxidation number of chromium in K<sub>2</sub>Cr<sub>2</sub>O<sub>7</sub> is:<br> |
- A. +2<br>
- B. +6<br>
- C. +7<br>
- D. +14<br>
|
| 4 |
The mathematical formula of Boyle's law is: |
- A. PV = k
- B. PT = k
- C. V = kT
- D. T = Vk
|
| 5 |
Deuterium is used to make:<br> |
- A. light water <br>
- B. heavy water<br>
- C. soft water<br>
- D. hard water<br>
|
| 6 |
............. are sonorous. |
- A. Metals
- B. Solids
- C. Metals
- D. Force
|
| 7 |
105 elements were discovered by the year ________________ |
- A. 1984
- B. 1974
- C. 1086
- D. 1996
|
| 8 |
Mark the incorrect statement about ionization energy:<br> |
- A. it is measured in Kjmol<sup>-1</sup><br>
- B. it is absorption of energy<br>
- C. it decreases in period<br>
- D. it decreases in a group<br>
|
| 9 |
Water dissolves ____________ compound. |
- A. Ionic
- B. Polar covalent
- C. A & B
- D. Nil
|
| 10 |
The formula of rust is:<br> |
- A. Fe<sub>2</sub>O<sub>3</sub>,nH<sub>2</sub>o
- B. Fe<sub>2</sub>O<sub>3</sub>
- C. Fe(OH)<sub>3</sub>-nH<sub>2</sub>O<br>
- D. Fe(OH)<sub>3</sub>
|
