Question

why the cylinders are red in colour??

Answer 1

$\huge\mathfrak\blue{Answer}$

Red colour light has the highest wavelength in the visible spectrum. So, it is visible even from a long distance. Red colour is used for anything which is dangerous or urgent. As we know that LPG is highly inflammable, it is painted red for the safety of the consumer.

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Answer 2

• Domestic LPG cylinders are not always red in colour.
• For example, blue-coloured cylinders are used in Singapore.
• Red colour light has the highest wavelength in the visible spectrum.
• So, it is visible even from a long distance.
• Red colour is used for anything which is dangerous or urgent.
• As we know that LPG is highly inflammable, it is painted red for the safety of the consumer.