| 1 |
Which of the following noble gas is used for arc welding and cutting |
- A. Helium
- B. Argon
- C. Xenon
- D. Radon
|
| 2 |
XeF6 n hydrolysis produces. |
- A. XeOF2
- B. XeOF3
- C. XeOF4
- D. XeF2
|
| 3 |
Bromine can be liberated from KBr solution by the action of. |
- A. I2 solution
- B. Chlorine
- C. NaCl
- D. KI
|
| 4 |
Which halogen will react spontaneously with Au to produce Au3+ |
- A. Br2
- B. F2
- C. I2
- D. Cl2
|
| 5 |
Which raw material is used for preparation of bleaching powder. |
- A. Cl2 and H2O
- B. Cl2 and Lime
- C. Cl2 and HOCl
- D. HCl and Lime
|
| 6 |
Which acid can not be stored in glass bottles. |
- A. HCl
- B. HF
- C. H2SO4
- D. HNO3
|
| 7 |
Which halogen will react spontaneously with Au<sub>(s)</sub>to produce Au<sup>3+</sup> |
- A. Br<sub>2</sub>
- B. F<sub>2</sub>
- C. I<sub>2</sub>
- D. Cl<sub>2</sub>
|
| 8 |
Bleaching powder contains available chlorine approximately |
- A. 100%
- B. 70-80%
- C. 35-40%
- D. 10-20%
|
| 9 |
Hydrogen bond is the strongest between the molecules of. |
- A. HF
- B. HCl
- C. HBr
- D. HI
|
| 10 |
Which one of halogens is a liquid |
- A. F<sub>2</sub>
- B. Cl<sub>2</sub>
- C. Br<sub>2</sub>
- D. I<sub>2</sub>
|