Chemistry
Give one use for each of the following inert gases:
(a) Argon
(b) Helium
(c) Neon
(d) Radon
(e) Krypton
(f) Xenon
Answer
(a) Argon is used to fill electric bulbs which improves the quality and life of the bulb.
(b) Helium is used for filling up weather observation balloons.
(c) Neon is used in making advertising signboards and tube-lights.
(d) Radon is used for cancer treatment.
(e) Krypton is used for photography.
(f) Xenon is used for photography.
Related Questions
Answer the questions put against each of the following constituents of air:
(a) Nitrogen : Explain its significance for plants and animals.
(b) Oxygen : What is the percentage proportion of oxygen in air? Why is oxygen called active air?
(c) Carbon dioxide : "Although carbon dioxide plays no role in respiration, all life would come to an end if there is no carbon dioxide in air." Support this statement with relevant facts.
(d) Water vapour : Explain its role in modifying the earth's climate.
Define the following terms:
(a) Pollutants
(b) Acid rain
(c) Global warming
(d) Smog
"Air is a mixture." Support this statement citing at least three evidences.
What is air pollution? What are the harmful effects of sulphur dioxide, nitrogen dioxide and hydrogen sulphide present in the air?