General Knowledge - Environmental Studies
Exam Duration: 45 Mins Total Questions : 30
Animal(s) which is/are active at night.
- (a)
owl
- (b)
rat
- (c)
cockroach
- (d)
all the above
Air pollution is caused by
- (a)
Insecticides
- (b)
Sewage
- (c)
Smoke
- (d)
Loud speakers
Materials required to prepare a food item are called
- (a)
Nutrients
- (b)
Ingredients
- (c)
Nourishments
- (d)
Minerals
Which of the following wastes cannot be decomposed by bacteria to form compost?
- (a)
Kitchen wastes
- (b)
Plastic and polythene bags
- (c)
Dead plants
- (d)
Bodies of insects living in the soil
What is portable water otherwise known as?
- (a)
Raw water
- (b)
Irrigation water
- (c)
Drinking water
- (d)
Surface water
Process through which plants reproduce:
- (a)
Eating
- (b)
Evaporation
- (c)
Pollination
- (d)
Condensation
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
Which animal never lands on it's back?
- (a)
Wolf
- (b)
Squirrel
- (c)
Dog
- (d)
Cat
Which animal can live the longest?
- (a)
Elephant
- (b)
Giraffe
- (c)
Galapagos Tortoise
- (d)
None of these
Which of the following is non-biodegradable?
- (a)
iron nails
- (b)
plastic mugs
- (c)
leather belts
- (d)
silver foil
Name the substance whose accumulation in pelicans of Lake Michigan led to the formation of thin shells of their eggs.
- (a)
CFC
- (b)
PAN
- (c)
DDT
- (d)
PAC
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
Why do camels have a long neck?
- (a)
more vertebrae
- (b)
vertebral plates between adjoining vertebrae
- (c)
increase in size of each vertebra
- (d)
cartilage pads between vertebra
Which of the following is not a milk product?
- (a)
cheese
- (b)
butter
- (c)
honey
- (d)
yogurt
A cell increase in volume when it is placed to
- (a)
Hypertonic solution
- (b)
Hypotonic solution
- (c)
Isotonic solution
- (d)
None of these
Which of the following will be zero in a fully turgid cell?
- (a)
Wall pressure
- (b)
Suction pressure(DPD)
- (c)
Turgor pressure
- (d)
Imbibitional pressure
The global warming efficiency of a CFC molecule in relation to a CO-. molecule is higher by a factor of:
- (a)
125
- (b)
25
- (c)
20,000
- (d)
1500
Which of the following physical forces are supported to be responsible for ascent as sap?
- (a)
Imbibition
- (b)
Capillary force
- (c)
Transpiration pull and cohesion
- (d)
Root pressure
Bacterial decomposition of biological material under aerobic condition is:
- (a)
Fermentation
- (b)
Fertilization
- (c)
Contamination
- (d)
Composting
In the analysis 15 water samples, Ca and Mg gave a correlation of +0.95. It means:
- (a)
Ca came from soil and Mg came from biota
- (b)
Ca and Mg both came from the same type of water
- (c)
Ca and Mg are both cogenetic
- (d)
Ca and Mg came from different sources.
If a piece of metal weighs 10.2g in air, 8.6g in water and 7.8g in another liquid, then what will be the specific gravity of the liquid?
- (a)
1.0
- (b)
1.5
- (c)
2.0
- (d)
3.0
To conserve coral reefs the Govt, of India declared one of the following as Marine Park:
- (a)
Gulf of Kutch
- (b)
Lakshadweep islands
- (c)
Gulf of Mannar
- (d)
Andaman Islands
In Cockroach, excretion is performed by
- (a)
Renette cells
- (b)
Flame cells
- (c)
Nephridia
- (d)
Malpighian tubules
Stomatal opening is based on
- (a)
Exosmosis
- (b)
Endomosis
- (c)
Plasmolysis in guard cells
- (d)
Decrease in concentration of cell sap
The main source of pollution is:
- (a)
Sewage Water
- (b)
Rain Water
- (c)
Atmospheric Pollutants
- (d)
Well-Water
The sound of which intensity is regarded as the safe noise level for a city?
- (a)
80 dB
- (b)
45 dB
- (c)
120 dB
- (d)
60 dB
Sparying of DDT on crops causes pollution of:
- (a)
Soil and Water
- (b)
Air and Soil
- (c)
Crops and Air
- (d)
Air and Water
Soil erosion can be prevented by:
- (a)
Increasing bird population
- (b)
Afforestation
- (c)
Removal of vegetation
- (d)
Over grazing
Our body prepares which type of Vitamin in the presence of sunlight?
- (a)
Vitamin A
- (b)
Vitamin B
- (c)
Vitamin D
- (d)
Vitamin K
_____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.