Q.List the uses of neon and argon gases.

Step 1: Uses of neon.

• Neon is used in discharge tubes and fluorescent bulbs for advertising signboards/signs, producing a characteristic reddish-orange glow.
• Neon is used in beacon lights at airports and on ships for signalling purposes, since its light penetrates fog effectively.

Step 2: Uses of argon.

• Argon, being chemically inert and cheaply available (from fractional distillation of liquid air), is used to provide an inert (non-reactive) atmosphere for high-temperature metallurgical processes such as arc welding of metals/alloys, preventing unwanted oxidation.
• Argon (mixed with a small proportion of nitrogen) is used to fill electric light bulbs, since it does not react with the hot tungsten filament, prolonging the bulb's life by slowing filament evaporation compared to a vacuum. …

List the standard textbook uses of neon (discharge signboards, beacon lights) and argon (inert atmosphere for welding, filling electric bulbs, lab iner …

• Do not mix up neon's and argon's uses — neon is specifically associated with discharge-tube signboards/beacon lights, while argon is specifically associated with welding atmospheres and bulb-filling.
• The question asks for uses (application), not preparation or properties — a description of how neon/argon are obtained does not answer what is being asked. …