Halogens and Noble Gases

1. All noble gases are colourless and odourless.

a) False
b) True

2. Krypton produces spectral lines of brilliant green and violet colours.

a) False
b) True

3. The oxidation state of Xenon in its compounds ranges from +2 to +6.

a) True
b) False

4. XeF₄ is used as fluorinating agent to produce metal fluorides.

a) True
b) False

5. Divers use a mixture of 60% He and 40%O₂.

a) False
b) True

6. Neon and helium is used in making glass laser.

a) True
b) False

This is more feedback!

This is the feedback!