World geography

271. The horizontal of soil profile is composed of

weathered parent material that is not affected by translocation and organic modification
material affected by translocation & organic modification
unweathered bedrock
None of the above

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profile is composed of" class="read-more button" href="https://exam.pscnotes.com/mcq/the-horizontal-of-soil-profile-is-composed-of/#more-43932">Detailed SolutionThe horizontal of soil profile is composed of

272. The texture of a soil refers to

the size distribution of the mineral particles composing the soil
the distribution of mineral particles in the soil
the crystal distribution in soil
None of the above

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texture of a soil refers to" class="read-more button" href="https://exam.pscnotes.com/mcq/the-texture-of-a-soil-refers-to/#more-43847">Detailed SolutionThe texture of a soil refers to

273. The most important force that provide resistance to particles towards entertainment is

frictional resistance
particle cohesive bonds
particle adhesive bonds
momentum

Detailed

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SolutionThe most important force that provide resistance to particles towards entertainment is

274. The reaction between compounds and oxygen is called

oxidation
hydrolysis
carbonation
solution

Detailed

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SolutionThe reaction between compounds and oxygen is called

275. The ionosphere contains ionized air that protects the earth from

the ultraviolet rays of the sun
the infrared rays of the sun
the falling meteorites
None of the above

Detailed Solution

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class="screen-reader-text">The ionosphere contains ionized air that protects the earth from

276. The heavier silicates named as ‘Sima’ or silica + magnesium are most abundant in the

crust
core
mantle
ocean floors

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64 288 64S117.2 64 74.6 75.5c-23.5 6.3-42 24.9-48.3 48.6-11.4 42.9-11.4 132.3-11.4 132.3s0 89.4 11.4 132.3c6.3 23.7 24.8 41.5 48.3 47.8C117.2 448 288 448 288 448s170.8 0 213.4-11.5c23.5-6.3 42-24.2 48.3-47.8 11.4-42.9 11.4-132.3 11.4-132.3s0-89.4-11.4-132.3zm-317.5 213.5V175.2l142.7 81.2-142.7 81.2z"/> Subscribe on YouTube class="screen-reader-text">The heavier silicates named as ‘Sima’ or silica + magnesium are most abundant in the

277. The slow down slope movement of soil and sediment because of frost heaving and thawing is called

solifluction
gelifluction
frost creep
rockfall

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is called" class="read-more button" href="https://exam.pscnotes.com/mcq/the-slow-down-slope-movement-of-soil-and-sediment-because-of-frost-heaving-and-thawing-is-called/#more-43384">Detailed SolutionThe
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slow down slope movement of soil and sediment because of frost heaving and thawing is called

278. The oldest rocks found in ocean basins are ____ than the oldest continental rocks.

older
younger
larger
smaller

Detailed SolutionThe oldest rocks

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found in ocean basins are ____ than the oldest continental rocks.

279. The mountains that separate European and Arctic Russia are

the Pyranees
the Balkans
the Carpathians
the Urals

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81.2z"/> Subscribe on YouTube button" href="https://exam.pscnotes.com/mcq/the-mountains-that-separate-european-and-arctic-russia-are/#more-43364">Detailed SolutionThe mountains that separate European and Arctic Russia are

280. The steady or initial phase of the magnetic storms is

preceded by storm sudden commencement
magnetic storm at middle and low altitudes
a sharp increase of the field
None of the above

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storms is" class="read-more button" href="https://exam.pscnotes.com/mcq/the-steady-or-initial-phase-of-the-magnetic-storms-is/#more-43249">Detailed SolutionThe steady or initial phase of the magnetic storms is

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