Question
Which of the following pollutants is the major
contributor to photochemical smog?Solution
Ozone : • Ozone is an allotrope of Oxygen, with molecular formula 03. • It is stabilised by resonance i.e. delocalisation of electrons. • It is a pale blue coloured gas present in our the stratosphere layer. • It protects us from the harmful Ultraviolet Rays coming from the sun. • The chlorofluorocarbons (CFCs) are the ozone-depleting agents originating from Air Conditioners, Refrigerators and Aerosols. • Montreal Protocol was signed on September 16, 1987, for the protection of Ozone, that entered into force on January 1, 1989. • But when Ozone is present at ground level, instead of atmosphere it acts as a pollutant.
Which of the following caves was repurposed as a Christian cave?
Khadar and Bhangar are which types of soil?
When was the first general elections in Independent India held?
Which number will replace the question mark in the following sequence?
3, 6, 9, 18, 21, ?
Which Bharatanatyam dancer founded the Dipasikha Dance Foundation in Chennai in 1984?
Amnesty International is a _____________
Which Indian city will soon get its first robocop?
Indian army’s southern command is conducting a major military exercise in the desert of Rajasthan. The name of the exercise is:
Arrange the following events, which took place in the early decades of the 20th century, in chronological order:
1. First Session of Indian Natio...
In which state is the ‘Balphakram National Park’ situated?
