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Thursday, December 22, 2011

Geology Solved Practice Paper

Geology Solved Practice Paper

Geology Sample Test Paper

Q.1: Piezometric surfaces are much smoother as compared to water table, the statement is:

a) True.

b) False.

c) Doubtful.

d) Partly true, partly false.

ANSWER: (a)

Q.2: The magnitude and the timing of groundwater level changes are related to:

a) The magnitude and location of change in flow or change in surface water storages.

b) The hydraulic properties of the aquifer.

c) The dimensions of the aquifer.

d) All the above.

ANSWER: (d)

Q.3: Well effectiveness is high if :

a) Specific capacity is high.

b) Well loss is negligible.

c) Drawdown in negligible.

d) Formation less is negligible.

ANSWER:(c)

Q.4: In the case of confined aquifers, the groundwater flow lines are:

a) Terminating at the water table.

b) Parallel to the impermeable confining beds.

c) Perpendicular to the impermeable confining beds.

d) Inclined tithe impermeable confining beds.

ANSWER: (b)

Q.5: The Water table fluctuation shows:

a) Gains to groundwater storages.

b) Losses to groundwater storages.

c) Flow direction of groundwater.

d) Both gains and losses to groundwater storage.

ANSWER: (d)

Q.6: Piezometric surface depends upon:

a) Atmospheric pressure.

b) Hydrostatic pressure in the aquifer.

c) Elevation of aquifer.

d) Hydrostatic pressure in the aquifer and elevation ofthe aquifer.

ANSWER: (d)

Q.7: What is the range of storage coefficient in the case of unconfined aquifer?

a) 0.001 to 0.03

b) 0.01 to 0.3

c) 0.05 to 0.5

d) 0.5 to 1.5.

ANSWER: (c)

Q.8: Darcy’s law is valid for:

a) Laminar flow only.

b) Turbulent flow only.

c) Both laminar and turbulent flows.

d) None of these. .

ANSWER: (a)

Q.9: The rate of flow through a unit cross sectional area under a unit hydraulic gradient is

Known as:

a) Darcy velocity.

b) Hydraulic conductivity.

c) Specific discharge.

d) Interstitial velocity.

ANSWER: (b)

Q.10: Cavity wells are preferred in:

a) Weathered gravity at shallow depth.

b) Thin, permeable confined aquifer occurring at shallow depth.

c) Deep confined aquifer.

d) Thin aquifer comprising loose materials below hard clay at a depth of 50m

ANSWER:(d)

d) Volume percentage of pose space.

ANSWER: (b)

Q.11: The intrinsic permeability ls mainly applied in:

a) Groundwater theories.

b) Petroleum and natural gas industries.

c) Both groundwater and petroleum industries.

d) Groundwater and sea water theories.

ANSWER: (b)

Q.12: "Intrinsic" permeability depends on the:

a) Fluid properties only.

b) Properties of material in medium only.

c) Both fluid and medium properties.

d) None of these.

ANSWER: (b)

Q.13: The approximate average permeability of gravel is:

a) 41.0 m/day

b) 4100.0 m/day.

c) 410.0 m/day

d) 4.10 m/day.

ANSWER: (b)

Q.14: "Point dilution method “is a:

a) Groundwater, quality determination method.

b) pH of groundwater determination method.

c) Determination of hydraulic conductivity of an aquifer by tracer’s method.

d) Porosity deters. ‘Nation method.’

ANSWER: (c)

Q.15: Water moves vertically down ward from the unconfined aquifer, through the Aquitard,

Into the confined aquifer, when:

a) The water table stands above the piezometric surface.

b) The piezometric surface stands above the water table.

c) Both the water table and the piezometric surface stand at a same level.

d) None of these.

ANSWER: (a)

Q.16: ln a water table map, areas with wide contour spacing’s possess:

a) Low hydraulic conductivity.

b) High hydraulic conductivity.

c) Low recharging capacity.

d) None of these.

ANSWER: (b)

Q.17: In the theory of groundwater movement Dupult-Forchhlelmer assumed:

a) The flow is horizontal and' uniformly distributed in a vertical section.

b) The velocity of flow is proportional to the tangent of the hydraulic gradient instead of sine of the Hydraulic gradient.

c) The velocity of flow is proportional to the site of the hydraulic gradient.

d) Both (a) and (b).

ANSWER: (d)

Q.18: A recharging well is:

a) Same as a pumping well.

b) The reverse of a pumping well

c) A type of discharge well.

d) None of these.

ANSWER: (b)

Q.19: Match the following columns i & ii

1. Effluent stream i) neither receives from nor contributes to ground water.

2. Influent stream ii) Water table lies above stream bed.

3. Insulated stream iii) Water table lies below stream bed.

4. Ephemeral stream iv) Maintains base flow through.

5. Perennial stream. v) Flows in response to precipitation.

a) 1-ii,2-iii,3-i,4-v,5-iv.

b) 1-iii,2-ii,3-v,4-iV,5-i.

c) 1 -iv,2-v,3-iii,4-11,5-1.

d) 1-i,2-ii,3-iii,4-iv,5-v.

ANSWER: (a)

Q.20: Which condition is preferable for construction of collector wells?

a) Weathered granite at shallow depth.

b) Deep confined aquifer.

c) Thin saturated alluvium below river bed.

d) All the above.

ANSWER: (c)

Q.21: In which configuration the spacing between electrodes is kept equal:

a) Werner

b) Schlumberger

c) Both wenner and schlumberger

d) None of these.

ANSWER: (a)

Q.22: Which seismic method is/are more commonly used for groundwater surveys?

a) Seismic reflection.

b) Seismic refraction.

c) Both seismic refraction and seismic reflection.

d) Seismic‘reflection with gravity method.

ANSWER: (b)

Q.23 : Determination of changes in bore hole diameter is done by :

a) Caliper log

b) Sonic log

c) Temberatitre log.

d) Neutron- Gamma log.

ANSWER: (a)

Q.24 : When gravel and silt of clay are under similar moisture conditions, then :

a) Gravel will have a lower resistivity than silt or clay.

b) Gravel will have a higher resistivity than silt or clay.

c) Both Gravel and silt or call will have same resistivity.

d) None of these.

ANSWER: (a)

Q.25 : During pumping test ,ass the water table ls lowered, gravity drainage of water from the unsaturated zone proceeds at a variable rate, known as:

a) Yield.

b) Delayed yield.

c) Residual yield.

d) Unconfined yield.

ANSWER: (b)

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