Ozone day is celebrated on:

Question

Ozone day is celebrated on:

1. A. 16th September (Correct answer)
2. B. 5th June
3. C. 21st April
4. D. 5th December

Correct Answer

Option A — 16th September

Detailed Solution & Explanation

The correct answer is 16th September.

Key Points

• The International Day for the Preservation of the Ozone Layer, commonly called World Ozone Day, is observed every year on 16 September.
• The date commemorates the signing of the Montreal Protocol in 1987.
• The Montreal Protocol on Substances that Deplete the Ozone Layer is widely regarded as the most successful environmental treaty in history and is the first UN treaty to achieve universal ratification by all countries.
• It phases out ozone-depleting substances (ODS) such as chlorofluorocarbons (CFCs), halons and carbon tetrachloride.
• Its parent convention is the Vienna Convention of 1985.
• The 2016 Kigali Amendment extended the Protocol to the phase-down of hydrofluorocarbons (HFCs) — chemicals that do not deplete ozone but are potent greenhouse gases.
• The ozone layer in the stratosphere absorbs harmful ultraviolet-B radiation.

Exam Tip

• do not confuse the dates — 5 June is World Environment Day and 22 April is Earth Day.

प्रश्न (हिन्दी में)

ओजोन दिवस कब मनाया जाता है?

1. A. 16 सितंबर
2. B. 5 जून
3. C. 21 अप्रैल
4. D. 5 दिसंबर