Question Text
Question 6 :
CFCs (carbon compounds having both fluorine and chlorine which are very stable and not degraded by any biological process) were found to persist in the atmosphere and deplete the ozone layer.TRUE OR FALSE?
Question 9 :
Oxygen is found in the elemental form in the atmosphere to the extent of 21%. TRUE OR FALSE?
Question 10 :
An increase in the carbon dioxide content in the atmosphere would cause more heat to be retained by the atmosphere and lead to global warming.TRUE OR FALSE?
Question 14 :
What among the following can be a major source of fresh water in a city/town/village ?
Question 15 :
Ozone absorbs harmful radiations from the Sun and prevents those harmful radiations from reaching the surface of the Earth where they may damage many forms of life.TRUE OR FALSE?
Question 19 :
The air that covers the whole of the Earth like a blanket, is called?