Which one of the following electric lighting devices contains mercury vapour and is toxic in nature?
Compact Flourescent Lamps
Incandescent bulbs produce light by heating a tungsten filament until it glows, and they do not contain mercury.
Compact Fluorescent Lamps work by passing an electric current through a small amount of mercury vapour sealed inside the glass tube, which produces ultraviolet light that a phosphor coating converts into visible light; this mercury vapour is toxic and requires careful disposal.
Light emitting diodes produce light through a semiconductor junction and contain no mercury.
Hence, among the given options, it is the Compact Fluorescent Lamp that is specifically known for containing toxic mercury vapour.
Similar Questions
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(A) Curd
(B) Vinegar
(C) Lime water
(D) Ant's sting
(E) Milk of magnesia
A coating of which material is commonly deposited on iron to protect it from corrosion and formation of rust?
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Read the statements given below and choose the correct option.
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Identify incorrect statement about non-metals :
Important Questions from Chemistry in Everyday Life
Which of the following is a greenhouse gas?
I. Methane
II. Nitrous oxide
The gas which turns lime water milky is:
Liquefied Petroleum Gas (LPG) is mainly a mixture of:
Among the following, the conducting form of carbon is
Which of the following is NOT a Fossil Fuel?
