Geology Online Free Paper for ONGC & IOCL Test
Geology (Earth Science) Practice Test Paper
Q. 1: The openings which control the discharge of surplus
water from any reservoir together constitute the :
(a) Sluice
(b) Galleries
(c) Diversion tunnels
(d) Spill way.
ANSWER: (d)
Q. 2: In the case of arch dam the whole or greater part of the load is transferred to the:
(a) Foundation
(b) Abutments
(c) Reservoir water column.
(d) None of these.
ANSWER: (b)
Q.3: Which sites are generally not suitable for construction of dams?
(a) Where the beds with gentle upstream dip are present
(b) Where the beds are vertical
(c) Where the beds with steep up stream dip are present.
(d) Where the beds with gentle downstream dip are present.
ANSWER: (b)
Q.4: A multipurpose reservoir is:
(a) Planned and constructed to serve various purposes
(b) Designed for one purpose but serves for more purposes.
(c) Both (a) and (b)
(d) None of these
ANSWER: (a)
Q. 5: Sediment deposit in reservoir can be reduced by:
(a) Providing vegetal cover
(b) Adopting soil conservation measures in the catchments area.
(c) Avoiding reservoir sites, which are prolific source of sediment.
(d) All the above.
ANSWER: (d)
Q. 6: The major resisting force in a gravity dam is:
(a) Wave pressure.
(b) Water pressure
(c) Uplift pressure
(d) Self weight.
ANSWER:(d)
Q. 7: When the reservoir is full, the maximum compressive force in a gravity dam is
Produced:
(a) At the toe
(b) At the heat
(c) At the centre of base
(d) With the middle third of base
ANSWER:(a)
Q. 8: The uplift pressure acting on a dam is controlled by:
(a) Pressure grouting in foundation.
(b) Constructing cutoff under stream face
(c) Constructing drainage channels between dam and its foundation.
(d) All of the above.
ANSWER:(d)
Q. 9: Horizontal acceleration due to earthquake results in:
(a) Hydrodynamic pressure
(b) Inertia force into the body of the dam.
(c) Both (a) and (b)
(d) None of these.
ANSWER: (c)
Q. 10: Out of the following which one is the arch dam:
(a) Bhakra dam
(b) Tungabhadra darn
(c) Indukki dam
(d) Koyna dam
ANSWER:(c)
Q. 11: As compared to gravity dam earthen dams require:
(a) Sound rock foundation
(b) Less skilled labour
(c) Skilled labour
(d) More cost
ANSWER:(b)
Q. 12: An excavation in the base of a dam filled with relatively impervious material to
reduce percolation, is called :
(a) Cutoff trench
(b) Key trench
(c) Sluice
(d) Both (a) and (b)
ANSWER :(d)
Q. 13: The Bhakra dam is located on:
(a) Sandstones only
(b) Sandstones interbedded with clay stones and siltstones
(c) Gneissic complex
(d) Clayey formation
ANSWER :(b)
Q. 14: Match the following columns:
I ll
1. Nagarjun Sagar dam (i) Remand River
2. Obra dam (ii) Sutlej river
3. Bhakra dam (iii) Krishna river
4. Sardar samovar dam (IV) Narmada River
(a) 1-ii, 2-i, 3-iii, 4-iv
(b) 1-i, 2-ii, 3-iii, 4-iv.
(c) 1-iv, 2-iii, 3-i, 4-ii.
[d) 1-iii, 2-4, 3-ii, 4-iv.
ANSWER :(d)
Q. 15: Extensive scour erosion commonly results downstream from a new dam, because:
(a) Presence of soft rocks
(b) More sediment load in the river water
(c) The clear water in the river downstream of the dam, since most sediments is trapped in the
reservoir.
(d) More sediment load and high velocity in river water.
ANSWER:(c)
Q. 16 : RIS stands for :
(a) Reservoir induced strength
(b) Risk in seismicity
(c) Reservoir induced seismicity
(d) Reservoir induced storage.
ANSWER:(c)
Q. 17: What was the magnitude of Koyna earthquake occurred on Dec. 10, 1997?
(3) 5.8
(b) 6.3
(c) 6.8
(d) 7.1
ANSWER:(b)
Q. 18: Bed rocks at Tehri dam site are:
(a) Granites
(b) Shales and sandstones
(c) Phyllites
(d) Quartzites
ANSWER:(c)
Q.19 : Mark the correct statement regarding the two-layered groundwater model :
a) The groundwater flow direction is quite different above and below the hydro-geoids layer.
b) Only the dynamic groundwater zone is controlled by the precipitation I evaporation
water mass balance.
c) The upper zone is called dynamic ground water and lower zone is called gravitational groundwater.
d) All the above are correct.
ANSWER: (d)
Q.20 :The term "DRASTIC" stands for :
a) Depth to water, Runoff, Aquifertype. storage capacity,
Transmissibllity impermeable strata and conductivity.
b) Depth to water, Recharge, Atmospheric pressure, slope of the ground,
Topography, Impact of runoff and Coefficient of permeability.
c) Depth to water, (Net) Recharge, Aquifer media, Soil media, Topography,
Impact of vadose zone and (Hydraulic) Conductivity of the aquifer .
d) None of these.
ANSWER: (c)
Q.21 : The hydro-geoids level is deformity by the :
a) Tides.
b) Gravity.
c) Rotation potentials.
d) All the above.
ANSWER: (d)
Q.22 : According to new groundwater concept, the ground- water layers which are separated
by a hydro-geoids level, are :
a) Permeable zone and Density zone.
b) Gravitational groundwater and percolation groundwater.
c) Dynamic groundwater and Gravitational groundwater.
d) Dynamic groundwater and statue groundwater.
ANSWER: (c)
Q.23: SAR stands for:
a) Sodium Absorption Ratio.
b) Sodium Adsorption Ratio.
c) Soil Alkanet Ration.
d) Soil AND Recharge.
ANSWER: (b)
Q.24: The treatment that should be given to the water form a deep tube well is:
a) Pre - settling only.
b) Coagulation and flocculation only.
c) Filtration only.
d) Disinfection only.
ANSWER: (d)
Q.25 : Presence of fluoride in water greater than permissible level of 1 .5 mg/L causes :
a) Cardiovascular disease.
b) Methemoglobinemia.
c) Hepatitis.
d) Dental fluorosis.
ANSWER: (d)
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