Question Text
Question 1 :
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 2 :
Which of the following are biologically important compounds that contain both oxygen and nitrogen?
Question 3 :
State true or false. The greenhouse effect is a process that occurs when gases in Earth's atmosphere trap the Sun's heat.
Question 4 :
The air that covers the whole of the Earth like a blanket, is called?
Question 5 :
Oxygen is found in the elemental form in the atmosphere to the extent of 21%. TRUE OR FALSE?
Question 7 :
Carbon occurs in the combined state as _______ in the atmosphere.
Question 8 :
The life-supporting zone of the Earth where the atmosphere, the hydrosphere and the lithosphere interact and make life possible, is known as?
Question 10 :
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 14 :
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 18 :
We need not to conserve our natural resources and use them in a sustainable manner. True or False?
Question 19 :
_______ of water from water-bodies and subsequent condensation give us rain.