The international treaty signed in 1987 to protect the ozone layer by phasing out ODS is:

More Everyday Science MCQs

• What causes the occurrence of solar eclipses on Earth?
• Which astronomical object was reclassified as a ‘dwarf planet’ by the IAU in 2006?
• Halley’s Comet orbits the Sun approximately once every how many years?
• Which planet is referred to as Earth’s ‘Twin’ due to similar size and mass?
• The boundary beyond which nothing, not even light, can escape a black hole is called: