In which of the following year was ‘Pluto’ demoted from its earlier status of Planet?

Correct option is B

The correct answer is (b) 2006
Explanation:
. Pluto was officially demoted from the status of a planet to a dwarf planet in 2006.
. This decision was taken by the International Astronomical Union (IAU) on 24 August 2006.
. Pluto failed to meet the newly defined criterion of a planet, as it has not cleared its orbital neighbourhood.
. The discovery of Eris in 2005 triggered the need to redefine the term “planet”.
. Pluto continues to orbit the Sun and is in hydrostatic equilibrium, but is classified as a dwarf planet.
Information Booster:
. Dwarf planets recognised by the IAU include Ceres, Pluto, Eris, Haumea and Makemake.
. Pluto was discovered in 1930 by Clyde Tombaugh.
Additional Knowledge:
1996 (Option a)
. No reclassification of Pluto occurred in this year.
2016 (Option c)
. No change in Pluto’s planetary status took place.
2008 (Option d)
. IAU discussions on dwarf planets occurred earlier, but Pluto’s demotion was already completed in 2006.