General Knowledge - Environmental Studies
Exam Duration: 45 Mins Total Questions : 30
If waste materials contaminate the source of drinking water which of the following diseases will spread?
- (a)
Scurvy
- (b)
Typhoid
- (c)
Malaria
- (d)
Anaemia
What are the ingredients of preparing Chapati?
- (a)
Atta (Wheat Flour) only
- (b)
Water only
- (c)
Both Atta and water
- (d)
None of these
What is portable water otherwise known as?
- (a)
Raw water
- (b)
Irrigation water
- (c)
Drinking water
- (d)
Surface water
What is the primary effect of excess phosphorous in the aquatic environment called?
- (a)
Fixation
- (b)
Nitrification
- (c)
Eutrophication
- (d)
Radiation
Medicine of quinine is provided by
- (a)
Eucalyptus plant
- (b)
aconite plant
- (c)
cinchona plant
- (d)
money plant
Who has made the public at large aware of oceans, their environment, and life through his films and TV serials?
- (a)
Jacques-Yves Cousteau
- (b)
Arthur C.Clarke
- (c)
David Attenborough
- (d)
Michael Cousteau
Frog has
- (a)
Five fingers and four toes
- (b)
Four fingers and five toes
- (c)
Five fingers and five toes
- (d)
Four fingers and four toes
Bull Frog of India is
- (a)
Rana tigerina
- (b)
R.sylvatice
- (c)
R. ecutesbeiana
- (d)
R. esculenta
What animals sleeps nearly all day long?
- (a)
Sloth
- (b)
Lion
- (c)
Elephant
- (d)
None of these
Name one non-biodegradable waste which may pollute the earth to dangerous levels of toxicity, if not handled properly.
- (a)
DDT
- (b)
CFC
- (c)
Radioactive substances
- (d)
PAN
Hyperplasia means:
- (a)
excessive motility of a muscle
- (b)
Voracious eating
- (c)
Abnormal increase in number of cells
- (d)
An increase in size of a cell
Carbon dioxide absorbs radiation in the range:
- (a)
5.5 and 7 microns
- (b)
Greater than 27 microns
- (c)
8 to 13 microns
- (d)
0.1 to 30 microns
Which combination of the following elements constitutes a major portion of earth crust:
- (a)
Oxygen and Silicon
- (b)
Oxygen and Iron
- (c)
Silicon and Iron
- (d)
Aluminium and Iron
Group of individuals of the same species that share common attributes are called:
- (a)
Community
- (b)
Population
- (c)
Ecotype
- (d)
Society
When water enters the cell, over one of the pressures is exerted on cell wall
- (a)
Osmotic pressure
- (b)
Sunaction pressure
- (c)
Turgor pressure
- (d)
Root pressure
Cell becomes turgid because of
- (a)
Plasmolysis
- (b)
Exosmosis
- (c)
Endosmosis
- (d)
Diffusion
The existence of root pressure can be demonstrated by
- (a)
Exudation or bleeding
- (b)
Wilting
- (c)
Transpiration
- (d)
Bleeding
The most widely accepted theory for ascent of sap is
- (a)
Root pressure theory
- (b)
Pulsatory theory
- (c)
Capillarity theory
- (d)
Cohesion theory
Absorption of water from cut ends of stems disapproves the theory of
- (a)
Capillarity
- (b)
Cohesion-tension theory
- (c)
Root pressure theory
- (d)
Imbibitional pressure theory
The least preferred technique in the disposal of municipal solid waste is:
- (a)
Incineration
- (b)
composting
- (c)
land filling
- (d)
bricketting
The geometric mean of the numbers 2, 4, 8, 16, 32 is:
- (a)
12
- (b)
16
- (c)
8
- (d)
32
The chemical that is used to ripen mangoes is:
- (a)
Calcium sulphide
- (b)
Calcium carbide
- (c)
Calcium carbonate
- (d)
Calcium chloride
Organisms that generate energy using light are:
- (a)
Oligotrophs
- (b)
chaemorganotrophs
- (c)
chaemolithotrophs
- (d)
photoautotrophs
Particle size in soil can be classified as clay: 1-4 micron. Silt:4-62 micron. Sand:62-1000 microns; Boulder:>1000 microns. It is hence correct to suggest that in nature particle size distribution follows:
- (a)
Binomial distribution
- (b)
Lognormal distribution
- (c)
Linear distribution
- (d)
Normal distribution
The kidney shaped guard cells are present in
- (a)
Dicot plants
- (b)
Monocot plants
- (c)
In both
- (d)
In algae
Stomatal opening is based on
- (a)
Exosmosis
- (b)
Endomosis
- (c)
Plasmolysis in guard cells
- (d)
Decrease in concentration of cell sap
Which gas is mainly responsible for green house effect?
- (a)
CO2
- (b)
O2
- (c)
H2
- (d)
Water vapours
Acid rains occur when atmosphere is heavily polluted with:
- (a)
CO,CO2
- (b)
Smoke particles
- (c)
Ozone
- (d)
SO2 and NO2
Pollution is not caused by the use of:
- (a)
Solar energy
- (b)
Wood
- (c)
Fossil fuel
- (d)
Unsaturated hydrocarbons
_____is a precursor for abscissic acid (ABA)
- (a)
Water potential of soil solution is more than root hair cell sap.
- (b)
Water potential of soil solution is less than root hair cell sap.
- (c)
Water potential both outside and inside hair is equal
- (d)
Water potential value of soil solution is negative.