1 |
The approximate age of the earth is: |
2.6 X 10<sup>7 </sup>years
3.6 X 10<sup>8</sup> years
4.6 X 10<sup>9</sup> years
None of these
|
2 |
Who gave the first general theory of evolution on earth? |
Lamarck
Stanley Miller
Aristotle
None of these
|
3 |
Which of the following is a living fossil? |
Blue green algae
Ginkgo
Fungus
Blue
|
4 |
The chief agent of evolution is: |
Mutation
Natural selection
Acquired characters
Sexual reproduction
|
5 |
The evolution of human species took place mainly in: |
Arthropod
Reptile
Amphibian
Echinoderm
|
6 |
Which of the following animals resembles most to the human beings in terms of physical and mental capabilities? |
Chimpanzee
Monkey
Gorilla
Langur
|
7 |
The species to which we belong is: |
Homo sapiens
Homo erectus
Australopithecus rebustus
None of these
|
8 |
Which of the following theories as regards the origin of life on earth is accepted today? |
Theory of spontaneous generation
Theory of special creation
Theory of biogenesis
Cosmozoic theory
|
9 |
Water vapour beyond the dew point results in: |
Precipitation
Condensation
Hailstorm
Formation of ice
|
10 |
The type of clouds which is thunder cloud and associated with heavy rain is: |
Cirrus
Cumulonimbus
Stratus
Cirrostratus
|
11 |
Which of the following types of rainfall is often accompanied with lightening and thunder? |
Convectional
Orographic
Frontal
None of these
|
12 |
Which of the following clouds is made up of tiny ice particles? |
Cumulus clouds
Cirrus clouds
Stratus clouds
None of these
|
13 |
Which cloud is known as high cloud? |
Cirrus
Stratus
Nimbus
Cumulus
|
14 |
The dense mass of small water drops on smoke or dust particles in the lower layers of the atmosphere is: |
Hail
Frost
Dew
Fog
|
15 |
Hailstorm occurs in summer season due to the formation of clouds called: |
Cumulus
Cumulonimbus
Cirrus
None of these
|
16 |
The formation of fog occurs when: |
Moist air meets cold surface of the earth
Cold air blows over warm water
Warm air meets cold surface
None of these
|
17 |
A sudden fall in the barometric reading indicates: |
Rain
Storm
Fine weather
Extreme cold
|
18 |
Clear nights are colder than cloudy nights because of: |
Precipitation
Radiation
Insolation
Condensation
|
19 |
Which of the following is not a form of precipitation? |
Rainfall
Waterfall
Dew
Fog
|
20 |
The instrument used for measuring relative humidity in air is: |
Pantograph
Hygrograph
Hydrograph
Barograph
|
21 |
The primary rainbow has an angular radius of: |
42<span style="line-height: 1.5;">°</span>
25.5<span style="line-height: 1.5;">°</span>
30.5<span style="line-height: 1.5;">°</span>
50.5<span style="line-height: 1.5;">°</span>
|
22 |
Clouds with vertical development are known as: |
Circus
Cirrocumulus
Stratums
None of these
|
23 |
Anemometer is an instrument used to: |
Find the wind direction
Measure wind speed
Measure humidity
Measure low pressure
|
24 |
The amount of actual water vapour of air is known as: |
Dew point
Absolute humidity
Relative humidity
Condensation point
|
25 |
The percentage of oxygen in the atmospheric oxygen is approximately: |
10.95%
20.95%
30.95%
50.95%
|
26 |
The tropical cyclone of the Bay of Bengal are usually called: |
Tornadoes
Depressions
Typhoons
None of these
|
27 |
The sea breeze blows during: |
Day from land to sea
Day from sea to land
Night from land to sea
Night from sea to land
|
28 |
The centre of cyclone is called: |
Apex
Eye
Vertex
Focus
|
29 |
Which of the following gases in the atmosphere provides a shield against a harmful ultraviolet ray at the sun? |
Carbon monoxide
Ozone
Oxygen
Nitrogen
|
30 |
The Horse latitudes are: |
The regions of calm and light variable winds
The regions lying between 5<span style="line-height: 1.5;">° N and 5</span><span style="line-height: 1.5;">° S</span>
The region of low atmospheric pressure
None of these
|
31 |
The unit for measurement of atmospheric pressure is: |
Grams per cubic meter
Kilometer per hour
Millimeters
Kilogram per square meter
|
32 |
What is the main cause of the movement in the earth's atmosphere? |
Difference in air pressure
Solar energy
Difference in temperature
Wind
|
33 |
The proportion of nitrogen in dry air is: |
78% by volume
20% by volume
70% by weight
25% by weight
|
34 |
Storm accompanied by strong winds revolving round a centre of atmospheric low pressure is known as: |
Blizzard
Cyclone
Chinook
Gale
|
35 |
Which of the following is the uppermost layer of the atmosphere? |
Stratrosphere
Exosphere
Mesosphere
None of these
|
36 |
In North America,the hot dry winds that blow on eastern side of the rocky mountains are called: |
Foehn
Loo
Chinook
Sirocco
|
37 |
The typhoons are more frequently experienced in: |
The north sea
Philippines Islands
West Indies Island
None of these
|
38 |
Oxygen in the upper atmosphere converted into: |
Hydrogen
Ozone
Nitrogen
CO<sub>2</sub>
|
39 |
Anticyclones are so called because: |
They move in a direction opposite to that of cyclones
They have no pressure gradient
They destroy the cyclonic conditions
None of thes
|
40 |
Winds blow: |
In region of low pressure
From a region of high pressure to the region of low pressure
From a region of low pressure to the region of high pressure
None of these
|
41 |
In the northern hemisphere,the winds are deflected: |
To the left
To the right
Upward
Downward
|
42 |
The layer of the atmosphere which provides ideal conditions for flying a jet aeroplane is: |
Stratosphere
Inosphere
Mesosphere
None of these
|
43 |
Which of the following term denotes the atmospheric level of which the decrease of temperature with height ceases to prevail? |
Troposphere
Tropopause
Stratosphere
None of these
|
44 |
Give the number of canals which takes off from Sukkur Barrage area. |
5
6
7
10
|
45 |
Taunsa Barrage irrigates the area of: |
Muzaffargar and D.G.Khan
D.G.Khan and Sahiwal
Multan and Bahawalpur
Karachi and Nawabshah
|