| 1 |
Which hydroxide decomposes on heating. |
- A. LiOH
- B. NaOH
- C. KOH
- D. CaOH
|
| 2 |
Which oxide is amphoteric in nature. |
- A. BeO
- B. MgO
- C. CaO
- D. BaO
|
| 3 |
Which elements are deposited at the cathode during the electrolysis of brine in diaphragm cell |
- A. H<sub>2</sub>
- B. Ba
- C. Ra
- D. Rn
|
| 4 |
Which is insoluble in water. |
- A. BeSO4
- B. MgSO4
- C. CaSO4
- D. BaSO4
|
| 5 |
The word alkali is derived from which language |
- A. Arabic
- B. Greek
- C. French
- D. German
|
| 6 |
Sodium is collected over molten sodium chloride in Down's cell, because. |
- A. It does not react with NaCl
- B. It is lighter in weight and floats on molten NaCl
- C. Its reactivity is greater than NaCl
- D. None of these
|
| 7 |
Which one of the following has lowest first ionization energy. |
|
| 8 |
In which ore carbon is present |
- A. Magnesite
- B. Epsom salt
- C. Barite
- D. Sylvite
|
| 9 |
Which one of the following is not an alkali metal |
- A. Francium
- B. Caesuym
- C. Rubidium
- D. Radium
|
| 10 |
The mineral CaSO<sub>4</sub>.2H<sub>2</sub>O has the general name |
- A. Dolomite
- B. Gypsum
- C. Calcite
- D. Epsom Salt
|