421.
The darkening of the skin due to arsenic poisoning is called
A
Black syndrome
B
Diffuse melanosis
C
Skin scaling
D
None of these
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The darkening of the skin due to arsenic poisoning is called
Black syndrome
Diffuse melanosis
Skin scaling
None of these
A biodegradable plastic developed by Biopak Corporation Australia
Biopol
Pet
Polyester
PVC
The phenomenon of accumulation of non-biodegradable pesticides in human beings
Biomagnification
Bioaccumulation
Biodegradation
Bioremediation
BOD stands for
Biological Oxygen Decrease
Biotic Oxygen Demand
Biological Oxygen Demand
None of the above
DDT is a _________________ pollutant
Bio degradable
Non bio degradable
Un-biodegradable
Naturally degradable
Minamata disease is caused by
Air Pollution
Water Pollution
Marine Pollution
All of these
The presence of solid, liquid or gaseous compounds, which may not be normally present, or in excess concentration in the atmosphere is called
air pollution
water pollution
soil pollution
radioactive pollution
Which of the following type of pollution can cause the outbreak of Jaundice
Air
thermal
water
land
Eutrophication results from
Agricultural and sewage water
Vehicle exhaust
Pesticides
Industrial effluents
Soil pollution is caused by
Aerosol
Ozone
Acid rain
PAN
Salinization is _______________________
Accumulation of salts in water
Accumulation of salts in soil
Accumulation of salts in body
Accumulation of salts in animals
What is meant by root zone process?
A control measure to prevent water pollution
A process by which roots of plants are spread on the ground
A control measure to prevent soil pollution
None of these
Thickness of plastic cover permissible to use
50 Microns
20 Microns
100 Microns
10 Microns
Ganga Action Plan in India was launched in the year _________
1988
1985
1980
1978
What is the name of the action plan for sustainable development in theTwenty first century framed in the Rio Declaration on Environment & Development (1992)?
Action 21
Agenda 21
Rio 21
Declaration 21
Why are the plasticisers added with polymers?
To hold other constituents of plastic together
To reduce the cost and enhance the strength and hardness of plastics
To improve flexibility and to reduce the temperature and pressure required for moulding of plastics
None of the abov
The plastics which soften when heat is applied with or without pressure, but requires cooling to set them to shape are called as
thermosofting materials
thermosetting materials
thermoplastic materials
thermostatting materials
The materials such as lead and barium, which are added with polymers to minimize the effect of heat, sunlight and ozone are called as
binders
blenders
stabilisers
fillers
Specific gravity of the plastics is usually
less than the specific gravity of metals
more than the specific gravity of metals
similar to the specific gravity of metals
Unpredictable
Which of the following is used to make CDs?
PVC
PTFE
Polycarbonate
Polypropylene