Related Questions

Very small amount of air pollutants are present in stratosphere also; though most of the atmospheric pollutants are present in the troposphere. Which of the following atmospheric pollutants does not cause the ozone layer depletion in atmosphere at tremendous rate?
A CO
B SO2
C NOx
D CFC (chloro fluoro carbons)
Upper atmospheric 03 layer is depleted by---
A Ammonia gas
B Carbon
C Freon gas
D Helium gas
Ozone level is generally found to be depleted in India in the month of
A February
B July
C April
D December
Name the international treaty designed to protect the ozone layer from CFCs.
A Sigma protocol
B Montreal protocol
C Ozone protocol
D Green protocol
Routers operate at layer _____. LAN switches operate at layer _____. Ethernet hubs operate at layer _____. Word processing operates at layer _____.
A 3, 3, 1, 7
B 3, 2, 1, none
C 3, 2, 1, 7
D 3, 3, 2, none
E All of the above
Which layer of of atmosphere contains the ozone layer?
A Mesosphere
B Stratosphere
C Troposphere
D Thermosphere
The earth's resources are being depleted too fast. To correct this , Alpha country must keep its resource consumption at present levels for many years to come. Which of the following , if true , would most strengthen the argument above ?
A New resource deposits are constantly being discovered
B Other countries need economic development more than Alpha country does.
C Alpha country consumes one-third of all resources used in the world
D Other countries have agreed to hold their resource consumption at present levels
Now the soils are depleted and the fields are 'barren' .
A plentiful
B productive
C dirty
D loose
The earth's resources are being depleted much too fast, To correct this, as a developing country, Bangladesh must keep its resource consumption at present levels for many years to come". The argument in this statement is based on which of the following assumptions?
A Per capital resource consumption in Bangladesh is at an all-tome high
B Curbing resource consumption of Bangladesh will significantly delay world resource delpetion
C Bangladesh uses more resources than any other country
D Bangladesh imports most of the resources it uses.
Unless the new reserves are found soon, the world's supply of coal is being depleted in such a way that with demand continuing to grow at present rates, reserves will be exhausted by the year 2050. Which of the following , if true , will weaken he above a
A There has been a slowdown in the rate of increase in world demand for coal over the last 5 years from 10% to 5%
B It has been known for many years that there are vast stocks of coal under Antarctica which have yet to be economically exploited
C Oil is being used increasingly in place of coal for many industrial and domestic uses
D As coal resources are depleted more and marginal supplies , which are more costly to produce and less efficient in use , are being mined

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