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Evaluation

SCORM Quiz

Question

1. The following are uses of noble gases except.

Answers

a)Argon is used in light bulbs to provide an inert environment to prevent oxidation of the bulb filament

b) Argon is used in arch welding as an insulator.

c) Argon is used to aid patients with breathing problems.

Question

2. Which of the following is true about noble gases.

Answers

a) They are highly reactive elements.

b) They can be used for making advertisement lights.

c) They are very poisonous hence should be handled with care.

Question

3. Noble gases are generally unreactive. Which of the following explains this?

Answers

a) They can only lose one electron.

b) They cannot lose or gain electrons hence have a stable configuration.

c) They are gases at room temperature.

d) They can react by oxidation of the other elements.

Question

4. Which of the following is true about noble gases?

Answers

a) Their melting points increases down the group.

b) They are highly soluble in water.

c) They are good conductors of electricity.

d) The atomic radius reduces down the group.

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