| 1 |
Which gas is evolved when CO2 is passed through KO2. |
- A. O2
- B. CO
- C. O3
- D. None of these
|
| 2 |
Which is more basic |
- A. RbOH
- B. NaOH
- C. KOH
- D. Li OH
|
| 3 |
Oxides of alkaline earth metal are |
- A. Acidic
- B. Basic
- C. Neutral
- D. Amphoteric
|
| 4 |
Which one of the following is not an alkali metal. |
- A. Francium
- B. Cesium
- C. Rubidium
- D. Radium
|
| 5 |
Which is insoluble in water. |
- A. BeSO4
- B. MgSO4
- C. CaSO4
- D. BaSO4
|
| 6 |
Which of the following gas will turn lime water milky |
- A. Cl<sub>2</sub>
- B. NO<sub>2</sub>
- C. CO
- D. CO<sub>2</sub>
|
| 7 |
Which is the least reactive of all the alkali metals |
|
| 8 |
Which element reacts with carbon to form metal carbide. |
- A. Li
- B. Na
- C. K
- D. All of these
|
| 9 |
Which on eof the following alkaline earth metal form peroxide when heated with oxygen at 600 <sup>o</sup>C |
- A. Magnesium
- B. Calcium
- C. Strontium
- D. Barium
|
| 10 |
Sulphur is essential constituent for plants. Which is not role of sulphur |
- A. Chlorophyll development
- B. Development of root system
- C. Constituents of some proteins
- D. Increase transpiration force
|