AHSEC| CLASS 11| GEOGRAPHY| SOLVED PAPER - 2024| H.S.1ST YEAR
2024
GEOGRAPHY
Full Marks: 70
Pass Marks: 21
Time: 3 hours
The figures in the margin indicate
full marks for the questions
1. Find out the correct answer of the following: 1×7=7
(a) The
lowermost layer of the atmosphere is
(i)
stratosphere
(ii) mesosphere
(iii) troposphere
(iv)
ionosphere
(b) Which two
layers of the earth's interior are separated by Moho's discontinuity?
(i) Sial and
Sima
(ii) Inner
core and outer core
(iii) Mantle and crust
(iv) Sial and
crust
(c) Which one
of the following earthquake w waves considered as most damaging?
(i) P-wave
(ii) S-wave
(iii) Body
wave
(iv) Surface wave
(d) In which
of the following States the Loktak Lake is situated?
(i) Assam
(ii) Mizoram
(iii) Manipur
(iv)
Meghalaya
(e) Which one
of the following rivers is known as the 'sorrow of Bihar'?
(i) Gandak
(ii) Kosi
(iii) Son
(iv) Yamuna
(f) Which one
of the following is a sedimentary rock?
(i) Granite
(ii) Limestone
(iii)
Quartzite
(iv) Gabbro
(g) Erosional
work is more in which part of a river?
(i) Upper stage
(ii) Lower
stage
(iii) Middle
part
(iv) All of
the above
2. Give short answers of the following (any eight):
2x8=16
(a) Name two
biosphere reserves of Assam.
Ans:- Two
Biosphere Reserves of Assam:-
(i) Manas
National Park.
(ii)
Dibru-Saikhowa National Park.
(b) What is
Coriolis force?
Ans:- The
Coriolis force is a fictitious force that arises from the rotation of the
Earth. It deflects moving objects on Earth, such as air masses and ocean
currents, from their intended path, resulting in curved trajectories. In the
Northern Hemisphere, this deflection occurs to the right, while in the Southern
Hemisphere, it occurs to the left.
(c) Write two
characteristics of old stage of river.
Ans:- Two
characteristics of the old stage of a river:-
(i) Winding
course: Old rivers often have a winding course due to erosion and
deposition over time.
(ii) Formation
of deltas or floodplains: As rivers reach their final stages, they deposit
sediments, forming deltas or broad floodplains.
(d) Name two
soil-forming factors.
Ans:- Two
soil forming factors:-
(i) Climate
(ii) Parent
material (parent rock from which soil is formed).
(e) What is
rock cycle?
Ans:- The
rock cycle is a continuous process that describes the transformation of rocks
from one type to another through geological processes. It includes the
formation of igneous, sedimentary and metamorphic rocks through processes such
as melting, cooling, erosion, sedimentation and metamorphism.
(f) Write two
effects of earthquake.
Ans:- Two
effects of earthquakes:-
(i) Ground
shaking and surface rupture: Earthquakes cause ground shaking, which may
cause surface ruptures and structural damage.
(ii)
Tsunamis and landslides: In coastal areas, earthquakes can trigger
tsunamis, while in mountainous areas, they can cause landslides.
(g) Name two
different expressions of humidity.
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