www.csirhrdg.res.in Council of Scientific & Industrial Research : Earth Sciences Model Question Paper

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EARTH SCIENCES
MODEL QUESTION PAPER
PART A
May be viewed under heading “General Science”

PART B
Albedo of a surface is defined by the ratio of outgoing to incoming solar
radiation. Keeping this in view, which of the following surface will have the
highest albedo?
1. Water 2. Sand 3. Snow 4. Forest
Geostrophic wind is a balance between the pressure gradient force and the
Coriolis force. In non-geostrophic wind, flow will become circulatory because of
1. pressure difference term
2. momentum term
3. temperature difference term
4. shear term

http://csirhrdg.res.in/intro_mp.htm
http://csirhrdg.res.in/es_mp.pdf

In valley-mountain system, cold air is heavier than warm air, and thus flows down
hill as a katabatic wind. In the case of an anabatic wind,
1. wind rises vertically in the valley
2. wind forms updraft and downdraft motion
3. wind will flow along the slope
4. wind will have cross mountain flow
Cyclones or hurricanes do not develop within about 50 N and S of the equator
because the
1. pressure gradient is weak
2. trade winds converge
3. ocean surface temperature is high
4. Coriolis force is very weak
When statically stable air flown over a hill or ridge, it is set into oscillation. These
waves are known as
1. Rossby waves
2. Kelvin waves
3. gravity waves
4. mountain waves
A ceaseless movement of wind and ocean currents results in global circulation
because of
1. unequal distribution of oceanic and continental mass
2. radiative forcing due to Sun-Earth interaction
3. tilt of Earth's axis
4. revolution / rotation of Earth
The organism that can take N2 directly from sea water is
1. foraminifera
2. cocolithophore
3. cyanobacteria
4. dinoflagellates
Which is the major limiting element in marine primary production?
1. sodium
2. nitrogen
3. carbon
4. argon
If the sea surface temperature is increased in Antarctic Ocean due to global
warming, the dissolved oxygen in its deep water will
1. increase
2. initially increase and then decrease
3. decrease
4. not change
Hydrogenous sediment in the oceans is
1. derived from skeletal debris
2. precipitated by chemical or biochemical reactions
3. produced by weathering of rocks on land
4. ejected by volcanoes
Sea surface temperature (SST) is an important and variable parameter of oceans.
In the Indian Ocean, SST variability has the largest amplitude on the timescale of
1. century
2. decadal
3. interannual
4. seasonal
The speed of current in the wind-driven Ekman layer
1. increases with depth
2. decreases with depth
3. remains constant
4. first decreases and then increases
Which one of the following is not true in case of the Arabian Sea?
1. seasonal high biological productivity
2. mid-depth oxygen minimum zone
3. net annual evaporation
4. net annual precipitation
Silicon limitation in the upper ocean will hamper the growth of
1. cocolithophos
2. foraminifera
3. diatam
4. corals
Which one of the following rock suites represents the oceanic lithosphere?
1. turbidite
2. ophiolite
3. seismite
4. granulite
Which one of the following is defined by shear strain?
1. change in length
2. change in angle
3. change in volume
4. change in area
Which one of the following is a measure of compressibility of a material?
1. elasticity (E) Young's modulus
2. rigidity (G) shear modulus
3. Poisson's ratio (?)
4. viscosity (?)
Coesite, a high pressure polymorph of quartz is found in rocks exposed on Earth's
surface because, coesite
1. is stable at low temperature
2. is a high density mineral
3. is not kinetically favoured for decomposition
4. has the lowest free energy at the Earth's surface
In Al2SiO5, the Al2O3 content (in wt %) is close to
1. 80
2. 60
3. 40
4. 20
In the feldspar mineral structure, chemical substitutions such as Ca2++Al3+ ? Na+
+ Si4+ and Na+? K+ are common. Amongst the feldspar group of minerals, which
one should have the highest amount of Al?
1. albite
2. anorthite
3. orthoclase
4. oligoclase
Generation of nuclear energy requires availability of minerals containing U and
Th. Which one of the following rocks is known to have high concentrations of
nuclear minerals?
1. basalt
2. diorite
3. granodiorite
4. pegmatite
Which one of the following minerals will have no useful nutrient elements for
plant life?
1. plagioclase feldspar
2. quartz
3. olivine
4. biotite
The atmosphere of Venus has about 97% CO2. If so, the planet should have
1. an abundance of photosynthesizing bacteria
2. an abundance of water
3. no life at all as the surface should be very hot
4. an abundance of fossil fuel deposits
Which one of the following drainage patterns is typically associated with fold
mountain belts?
1. parallel
2. rectangular
3. trellis
4. dendritic
If the wave front is exactly parallel to the coast, which one of the following will
still occur along the coast?
1. beach drift
2. longshore drift
3. longshore current
4. wave refraction
A river will braid irrespective of the fact that it is gravel-bed, sand-bed or silt-bed
if
1. sediment supply = sediment transport
2. sediment supply < sediment transport
3. sediment supply > sediment transport
4. sediment supply >> sediment transport
On the geoidal surface, the Earth?s gravity field
1. is everywhere zero
2. is a constant and is normal to the surface
3. varies along the surface, but is normal to it
4. varies in magnitude and direction along the surface
An isostatically compensated elevated landmass is characterized by
1. strong negative Bouguer and free-air anomalies
2. strong negative Bouguer and little or no free-air anomalies
3. strong positive Bouguer and little or no free-air anomalies
4. strong positive Bouguer and free-air anomalies
The remnant magnetism in a rock solidified in the Earth?s magnetic field at a
latitude of 30?, dips
1. at 30?
2. between 30?and 45?
3. between 45? and 60?
4. at an angle greater than 60?
The shadow zone is the region bounded by the disappearance of P and S waves,
and the onset of P waves
1. reflected at the Earth?s surface
2. refracted through the fluid core
3. reflected at the mantle-core boundary
4. refracted through the fluid and solid cores
Statement I: Ferromagnetic minerals exhibit properties of paramagnetic minerals
beyond Curie temperatures.
Statement II: Mantle rocks are less magnetic than those of the upper crust.
1. statements I and II are true; I explains II
2. statements I and II are true, but I does not explain II
3. statement I is true, but II is false
4. statement I is false, but II is true
An example of intraplate volcanic activity is
1. the Himalaya
2. island arcs
3. the Alps
4. the Hawaiian islands
A region with nearly flat topography and large negative gravity anomaly suggests
1. a root in the mantle
2. thin crust with low density material underplating
3. thick crust with high density material underplating
4. thin crust
Heat is transported in the lithosphere through
1. advection
2. radiation
3. conduction
4. convection
Somali jet during Indian summer monsoon season
1. strengthens
2. weakens
3. remains the same
4. reverses
In the troposphere, the temperature decreases as a function of height because
1. air is incompressible and its pressure decreases with height
2. air is compressible and its pressure increases with height
3. air is compressible and its pressure decreases with height
4. air is incompressible and its pressure increases with height

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CSIR has introduced new entry level qualification for Technical Assistant which states 10+2 followed by Diploma in Engineering/Technology field. When the eligibility for Diploma in Engineering/Technology in polytechnics is 10th standard only. The students who does 10th followed by Diploma is not eligible for Technical Assistant posts. When the AICTE is giving the eligibility for Diploma in Engineering/Technology as 10th then what is the problem with CSIR? There are 42 CSIR labs in India & persons are affected.

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I want to download the sample question paper for life sciences.

You can get the model question paper for Life Sciences in the below link
http://csirhrdg.res.in/ls_mp.pdf

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Please Send Answer Key too.