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OPSC Prelims 2015
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110 Questions Found
1.
Insulin is secreted from which gland or organ of the human body?
A
Kidney
B
Liver
C
Pancreas
D
Small Intestine
Examination:
OPSC Prelims 2015
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2.
Low pressure turning to the cyclone results if the temperature of water at the sea level rises above:
A
26.5°C
B
20.5°C
C
15.5°C
D
10.5°C
Examination:
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3.
Which of the following instruments is used for measuring very high temperatures?
A
Photometer
B
Pyrgeometer
C
Solarimeter
D
Pyrometer
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4.
Which instrument is used for measuring the altitude, direction, and velocity of clouds?
A
Pyrgeometer
B
Nephoscope
C
Nephelumeter
D
Venturimeter
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5.
Which of the following should be avoided in biological marriage?
A
A+ boy and A- girl
B
A+ boy and A+ girl
C
O+ boy and O- girl
D
AB- boy and AB+ girl
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6.
Coal should be used judiciously because it causes:
A
Air pollution
B
Acid rain
C
Global warming
D
All of the above
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7.
Artificial kidney helps :
A
Remove nitrogenous waste products from the blood
B
Reabsorbs useful substances from tubules to blood
C
Secretes wasteful substances from the blood to the tub
D
All of the above
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8.
Type Il diabetes is characterized by
A
Hyperglycemia
B
Polyuria
C
Both of the above
D
None of the above
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9.
The roots of a plant always grow downwards while shoots usually grow upwards and away from the earth. It is known as:
A
Hydrotropism
B
Geotropism
C
Chemotropism
D
All of the above
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10.
Which of the following is a plant hormone?
A
Melatonin
B
Gastrin
C
Cytokinin
D
Cholecystokinin
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11.
Which of the following constitutes a food chain?
A
Grass, Pulses, Mango
B
Grass, Goat, Human
C
Grass, Goat, Cow
D
Grass, Fish, Goat
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12.
Non-conventional source of energy is:
A
Fossil fuel
B
Nuclear energy
C
Biomass energy
D
All of the above
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13.
Microsoft Excel is used for:
A
Writing a letter
B
Multimedia presentation
C
Spreadsheet
D
All of the above
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14.
Myopia, also known as near-sightedness, can be corrected by use of:
A
Convex lens
B
Concave lens
C
Plane lens
D
Magnifying lens
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15.
Which is not the function of the CPU?
A
Storage
B
Processing
C
Displaying
D
Communication
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16.
At the time of the short circuit, the current in the circuit :
A
Reduces substantially
B
Does not change
C
Increases heavily
D
Vary continuously
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17.
Which is not a hardware of a computer?
A
CPU
B
Monitor
C
Mouse
D
Microsoft Windows
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18.
A fuse is the most important safety device used for protecting the circuits due to the:
A
Short-circuiting
B
Overload
C
Both of the above
D
Leakage of the current
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19.
Green plants commonly:
A
Releases CO₂ in the day time and O₂ at night time and is no
B
Releases O₂ in day time and CO₂ in night time
C
Releases both O and CO₂ in the day as well as at night
D
Releases both O₂ and CO₂ in day and only O₂ in night
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20.
The biochemical oxygen demand in water is enhanced by:
A
Increase in a load of organic matter
B
Increase in dissolved nitrogen
C
Increase in heavy metal content
D
Dense population of phytoplankton
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21.
The role of bacteria in an ecosystem is to :
A
Recycle nutrients
B
Immobilize nutrients
C
Fix carbon for secondary production
D
Supply organic carbon
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22.
The pyramid that always remains erect in a stable ecosystem with homeostasis is :
A
Pyramid of biomass
B
Pyramid of number
C
Pyramid of energy
D
Pyramid of population
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23.
A habitat of long severe winters and few months of summer constituting the only growing season for plants are
A
Savannah ecosystem
B
Tundra ecosystem
C
Coniferous ecosystem
D
Taiga ecosystem
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24.
The largest amount of freshwater on our planet is present in:
A
Lakes and rivers
B
Ground water
C
Pond and wells
D
Polar ice and glaciers
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25.
A thick and fleshy stem covered with a thick cuticle stores water in:
A
Hydrilla
B
Opuntia
C
Tecoma
D
Magnolia
Examination:
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