IOCL Earth Science (Geology) Model Test Paper

IOCL Earth Science (Geology) Model Test Paper
Geology IOCL Exams Practice Questions
Q.1. The capillary rise in a narrow two-dimensional
slit of width ‘w’ is
(a) Half of that in a capillary tube of diameter ‘w’
(b) Two-third of that in a capillary tube of diameter ‘w’
(c) One-third of that in a capillary tube of diameter ‘w’
(d) One-fourth of that in a capillary tube of diameter ‘w’
ANSWER: (a)

Q.2. Pumping device for supplying water to boiler
does not have moving parts is
(a) Single stage centrifugal pump
(b) Multistage centrifugal pump
(c) Steam injector
(d) Simplex pump
ANSWER: (c)

Q.3. A pressure of  500 kPa applied to of liquid
results in a volume change of 0. 004 The bulk
modulus, in MPa, is
(a) 2.5
(b) 25
(c) 250
(d) 2500
ANSWER: (c)


Q.4. If d = diametr of nozzle, D = diameter of pipe,
l = length of pipe and f = Darcy's coefficient of friction
for pipe, then for maximum power transmission of power,
d should be equal to

ANSWER: (a)

Q.5. The most economical channel section for a given
cross sectional area is one for which has minimum
(a) Velocity
(b) Discharge
(c) Depth
(d) Wetted perimeter
ANSWER: (b)

Q.6. The two important forces for a floating body are
(a) Buoyancy, gravity
(b) Buoyancy, pressure
(c) buoyancy, inertial
(d) Inertial, gravity
ANSWER: (a)

Q.7. The depth of water below the spillway and after
hydraulic jump are 1 m and 6 m respectively. The head
lost will be,
(a) 1.04m
(b) 5m
(c) 1.7m
(d) 2.05m
ANSWER: (a)

Q.8. A model of a reservoir is drained in 4 minutes
by opening the sluice gate. The model scale is
1 : 225. How long should it take to empty the
prototype?
(a) 900 minutes
(b) 4minutes

ANSWER: (d)

Q.9. Pressure in Pascals at a depth of 1m below the
free surface of a body of water will be equal to
(a) 1 Pa
(b) 98.1 Pa
(c) 981 Pa
(d) 9810 Pa
ANSWER: (d)

Q.10. At the centre line of a pure flowing under
pressure where the velocity gradient is zero, the
shear stress will be
(a) Minimum
(b) Maximum
(c) Zero
(d) Could be any value
ANSWER: (d)

Q.11. Surge wave is an example of
(a) Steady uniform flow
(b) Steady non-uniform flow
(c) Unsteady uniform Flow
(d) Unsteady non-uniform flow
ANSWER: (d)

Q.12. An equi-potential line has
(a) No velocity component tangent to it
(b) Uniformly varying dynamic pressure
(c) No velocity component normal to it
(d) Existence in case of rotational flow
ANSWER: (a)

Q.13. The terminal velocity of a small sphere settling
in a viscous fluid varies as the
(a) Inverse of the diameter
(b) Inverse of square of the diameter
(c) Fluid viscosity
(d) Inverse of the fluid viscosity
ANSWER: (d)

Q.14. Two forces most important in laminar flow
between closely parallel plates are
(a) Inertial and viscous
(b) Viscous and pressure
(c) Gravity and pressure
(d) Pressure and inertial
ANSWER: (b)


Q.15. The falling drops of rain acquire spherical
shape on account of
(a) Viscosity
(b) Surface tension
(c) Compressibility
(d) Buoyancy
ANSWER: (b)

Q.16. The ratio for turbulent flow is
(a) Physical property of the fluid
(b) Dependent upon, flow and density
(c) Viscosity divided by the density
(d) Independent of the nature of flow
ANSWER: (b)


Q.17. Bernoulli ’s equation cannot be applied when the
flow is
(a) Rotational
(b) Turbulent
(c) Unsteady
(d) All of the above
ANSWER: (b)

Q.18. For a floating body to be in stable equilibrium,
its metacentre should be
(a) Below the centre of gravity
(b) Below the centre of buoyancy
(c) Above the centre of buoyancy
(d) Above the centre of gravity
ANSWER: (d)


Q.19. Total pressure on the top of a closed cylindrical
vessel of radius r filled with liquid is proportional to

ANSWER: (c)


Q.20. Euler’s equation, in the differential form of
motion of liquids is given by

ANSWER: (c)


Q.21. According to Darcy’s formula, loss of head due
to friction in the e pipe is



ANSWER: (a)


Q.22. Relation between gauge pressure p inside a
Liquid droplet (i.e. difference of pressure between
inside and outside of a liquid drop) of diameter
d and surface tension' is

ANSWER: (d)


Q.23. For a floating body to be in equilibrium
(a) Metacentre should be above c. g.
(b) Centre of buoyancy and c. g. must lie on the same vertical plane
(c) A righting couple should be formed
(d) All of the above
ANSWER: (d)

Q.24. When a body floating in a liquid is displaced
slightly; it oscillates about
(a) C. g. of body
(b) Centre of pressure
(c) Centre of buoyancy
(d) Metacentre
ANSWER: (d)

Q.25. A streamline
(a) Occurs on all types of Flows
(b) Is the line along geometrical centre of the flow
(c) Is the line of equal velocity in a flow
(d) Is fixed in space flow
ANSWER: (d)


Q.26. An imaginary line drawn through a flow
Field such that the tangent at any point gives the
velocity vector at an instant, is known as
(a) Path line
(b) Streak line
(c) Stream line
(d) None of the above
ANSWER: (c)

Q.27. In laminar flow through a pipe, discharge varies
(a) Linearly as the viscosity
(b) Linearly as pipe diameter
(c) Inversely as the viscosity
(d) Linearly as the pressure drop
ANSWER: (c)

Q.28. The upper critical Reynolds number is
(a) Important from a design view point
(b) Number at which turbulent flow changes tolaminar flow
(c) About 2000
(d) Not more than 2000
ANSWER: (c)

Q. 29 : Which planet has the highest density :
(a) Mercury
(b) Venus
(c) Earth
(d) Mars.
ANSWER:(c)

Q. 30 : Which elements are the most abundant in the solar atmosphere :
(a) Helium only
(b) Hydrogen and Helium
(c) Helium and carbon
(d) Hydrogen and Nitrogen.
ANSWER:(b)