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UPSC Geography Page: 2
3584.Tropical cyclones do not form over equator. This is because
1. Equator is a zone of wind convergence.
2. The temperature over equator is too high.
3. There are no fronts over equator.
Select the correct answer using the codes given below.
1 and 2 only
1 and 3 only
2 and 3 only
none
Explanation:
Tropical cyclone does not form over the equator because the coriolis force is zero at the equator. Even though equator is a zone of wind convergence, it has nothing to do with tropical cyclone as such. Temperature is highest north and south of equator and not exactly at equator. Fronts are required for formation of temperate cyclone and not tropical ones. So even though statement 3 is correct it is not a reason.
3585.With reference to laterite soil, consider the following statements:
1. They are the result of intense leaching.
2. They are poor in organic matter.
Which of the statements given above is/are correct?
1 only
2 only
Both 1 and 2
Neither 1 nor 2
Explanation:
Laterite soil is primarily found in the tropical regions which receive heavy seasonal rainfall. High rainfall encourages the leaching of soil where lime and silica are leached away and a soil rich in oxides of aluminum predominate and abundance laterite is called bauxite. Due to the presence of iron oxides the colour of laterite soil is basically red. This soil is poor in organic matter and lime content.
3586.Monsoon in India is said to be essentially pulsating in nature. This means
They are influenced by jet streams.
They occur in wet spells of few days duration at a time.
Ocean current like el-nino impacts the monsoon
none
3587.Deltas of eastern India are shrinking due to
1. huge amount of sediments being deposited.
2. groundwater mining.
3. construction of large dams.
Select the correct answer using the codes given below.
1 and 2 only
1 and 3 only
2 and 3 only
1, 2 and 3
Explanation:
Deltas shrink due to lack of sediments and not due to huge amount of sediments. A proliferation of large dams that starve deltas of sediment, groundwater mining that causes land compaction, and artificial levees that affect river courses, have been responsible for the subsiding of major Indian deltas including Ganga-Brahmaputra, Krishna-Godavari, Brahmani and Mahanadi. Read more – http://www.thehindu.com/sci-tech/energy-and-environment/indian-deltas-are-sinking/article5892566.ece
3588.With reference to International Date Line (IDL), consider the following statements:
1. A traveler crossing the IDL from east to west gains a day.
2. IDL is an imaginary straight line at 180 degree meridian.
Which of the statements given above is/are correct?
1 only
2 only
Both 1 and 2
Neither 1 nor 2
Explanation:
A traveler crossing the IDL from east to west loses a day. IDL is an imaginary zig zag line at 180 degree meridian. The International Date Line (IDL) is an imaginary line of longitude on the Earth’s surface located at about 180 degrees east (or west) of the Greenwich Meridian. The International Date Line isn’t a fixed line at all, but actually sort of follows the 180° longitude line, zigzagging its way through a bunch of small islands, territories and nations
3589.Which of the following is/are examples of mountains of elevation?
1. Rockies
2. Himalayas
3. Andes
4. Alps
Select the correct answer using the codes given below.
1, 2 and 3 only
1 ,3 and 4 only
2 ,3 and 4 only
1 ,2, 3 and 4 only
Explanation:
Mountains of elevation are just another name of fold mountains. All the 4 mountain above are fold mountain and hence mountains of elevation.
3590.The lava cone of a volcano is having steep sloping sides. Which of these can be said about the volcano?
1. the lava must have been highly fluid.
2. it must have high silica content.
3. the volcano must have been explosive.
Select the correct answer using the codes given below.
1 and 2 only
1 and 3 only
2 and 3 only
1, 2 and 3
Explanation:
If the lava is fluid, it will flow quickly and form a gentle slope. If the slope formed is steep, the lava must have been viscous. Viscous lava has high silica content and such volcanoes are explosive.
3591.Which of the following is/are examples of chemical weathering?
1. frost action on rocks.
2. repeated wetting and drying.
3. oxidation of minerals in a rock
Select the correct answer using the codes given below.
1 and 2 only
1 and 3 only
3 only
1, 2 and 3
Explanation:
Chemical weathering is what happens when rocks are broken down and chemically altered. Frost action and repeated wetting and drying are the process of physical weathering. Oxidation of minerals in rocks by moisture is chemical weathering. Another process of chemical weathering would be decomposition by organic acids
3592.Which of the following comes under the phenomena of mass movement?
1. soil creep
2. weathering
3. landslide
Select the correct answer using the codes given below.
1 and 2 only
1 and 3 only
2 and 3 only
1, 2 and 3
Explanation:
In weathering, there is no movement and it is an in-situ process. In soil creep and landslide there is mass movement of soil and debris respectively, so they come under the phenomena of mass movement.
3593.The rivers in India that flows through a rift valley are
1. Luni
2. Damodar
3. Tapi
4. Betwa
Select the correct answer using the codes given below.
1, 2 and 3 only
1 ,3 and 4 only
2 and 3 only
1 ,2, and 4 only
Explanation:
Apart from Narmada, Damodar and Tapi also flow through a rift valley.
3594.What could be the main reason/reasons for the formation of African and Eurasian desert belt?
1. It is located in the sub-tropical high pressure cells.
2. It is under the influence of warm ocean currents.
Which of the statements given above is/are correct in this context?
1 only
2 only
Both 1 and 2
Neither 1 nor 2
3595.An artificial satellite orbiting around the Earth does not fall down. This is so because the attraction Of Earth
does not exist at such distance
is neutralized by the attraction of the moon
provides the necessary speed for its steady motion
provides the necessary acceleration for its motion
3596.What is die difference between asteroids and comets?
1. Asteroids are small rocky planetoids, while comets are formed of frozen gases held together by rocky and metallic material.
2. Asteroids are found mostly between the orbits of Jupiter and Mars, while comets are found mostly between Venus and Mercury.
3. Comets show a perceptible glowing tail, while asteroids do not.
Which of the statements given above is/are correct?
1 and 2 only
1 and 3 only
3 only
1, 2 and 3
3597.Which one of the following is the characteristic climate of the Tropical Savannah Region?
Rainfall throughout the year
Rainfall in winter only
An extremely short dry season
A definite dry and wet season
3598.Between India and East Asia, the navigation-time and distance can be greatly reduced by which of the following?
1. Deepening the Malacca straits between Malaysia and Indonesia.
2. Opening a new canal across the Kra isthmus between the Gulf of Siam and Andaman Sea.
Which of the statements given above is/are correct?
1 only
2 only
Both 1 and 2
Neither 1 nor 2
3599.Which one of the following pairs is correctly matched?
Geographical Feature Region
Abyssinian Plateau : Arabia
AtlasMountains : North-Western Africa
Guiana Highlands : South-Western Africa
OkavangoBasin : Patagonia
3600.The most important fishing grounds of the world are found in the regions where:
warm and cold atmospheric currents meet
rivers drain out large amounts of fresh water into the sea
warm and cold oceanic currents meet
continental shelf is undulating
3601.Which of the following is/are unique characteristic/characteristics of equatorial forests?
1. Presence of tall, closely set trees with crowns forming a continuous canopy
2. Coexistence of a large number of species
3. Presence of numerous varieties of epiphytes
Select the correct answer using the code given below:
1 only
2 and 3 only
1 and 3 only
1, 2 and 3
3602.“Climate is extreme, rainfall is scanty and the people used to be nomadic herders.”
The above statement best describes which of the following regions?
African Savannah
Central Asian Steppe
North American Prairie
Siberian Tundra
3603.Which of the following phenomena might have influenced the evolution of organisms?
1. Continental drift
2. Glacial cycles
Select the correct answer using the code given below.
1 only
2 only
Both 1 and 2
Neither 1 nor 2.
3604.Turkey is located between  
Black Sea and Caspian Sea
Black Sea and Mediterranean Sea
Gulf of Suez and Mediterranean Sea
Gulf of Aqaba and Dead Sea
3605.What is the correct sequence of occurrence of the following cities in South-East Asia as one proceeds from south to north?
1.Bangkok
2.Hanoi
3.Jakarta
4.Singapore
Select the correct answer using the code given below.
4-2-1-3
3-2-4-1
3-4-1-2
4-3-2-1
3606.With regard to the Western Himalayas and the Eastern Himalayas, consider the
following
1. The ranges of the Eastern Himalayas are more continuous compared to Western Himalayas
2. The Western Himalayas receive most of the precipitation in the winter months and the Eastern Himalayas in the summer months
3. Eastern Himalayas are much greener and dense compared to Western Himalayas
Choose the correct answer using the codes below.
1 and 2 only
2 and 3 only
1 and 3 only
All of the above
Explanation:
Western Himalaya refers to the western half of the Himalayan Mountain region, stretchingfrom Badakhshan in northeastern Afghanistan/southern Tajikistan, through Kashmir toNepal. Eastern Himalaya is situated between Central Nepal in the west and Myanmar in theeast, occupying southeast Tibet in China, Sikkim, North Bengal, Bhutan and North-East India.The western himalayas consists of the most continuous range and the loftiest peaks andcompared to eastern Himalayas. The western Himalayas receive more precipitation fromnorthwest in the winters, and eastern Himalayas receive more precipitation fromsoutheastern monsoon in the summers. Due to higher temperature and perception, theEastern Himalayas are far greener with forests than the Western Himalaya.
3607.Consider the following statements
1. The peninsular plateau is composed mainly of igneous and metamorphic rocks
2. The Garo, Khasi and Jaintia Hills form a part of peninsular block.
3. The peninsular plateau is the oldest and most stable landmass in India, devoid of earthquakes or volcanic activity.
Choose the correct answer using the codes below.
1 and 2 only
2 and 3 only
1 and 3 only
All of the above
Explanation:
The central-western parts of India, particularly Gujarat (in 1819, 1956 and 2001) andMaharashtra (in 1967 and 1993) have also experienced some severe earthquakes. Earthscientists have found it difficult to explain the occurrence of earthquakes in one of theoldest, most stable and mature landmass of Peninsular block for a long time. Recently, someearth scientists have come up with a theory of emergence of a fault line and energy build-upalong the fault line represented by the river Bhima (Krishna. near Latur and Osmanabad(Maharashtra. and the possible breaking down of the Indian plate.
3608.New Moore Island was recently in news because
of the maritime dispute between India and Sri Lanka on Kachatheevu islands
of the maritime dispute between India and Bangladesh
of the alarming decline in the population of dolphins and whales there
of the alarming decline in the area of mangroves and coral reefs there
Explanation:
The island is located in the coastal, shallow Bay of Bengal immediately south of theinternational border river, the Hariabhanga. The island was claimed by both Bangladesh andIndia, although neither country established any permanent settlement there because of theislands geographical instability. Bangladesh claims the settlement of the boundariesbetween Bangladesh and India has been reached on the basis of Radcliffe Award.Bangladesh took these disputes to the PCA in 2009. Recently, the dispute came to an end asthe Permanent Court of arbitration gave final verdict regarding this dispute alloting a largemaritime area to Bangaldesh about 32,000 sq. kms. The delimitation award is binding onboth the parties and is not subject to further appeal. But, New Moore Island (or SouthTalpatti Island to the Bangladesh) has fallen in India`s part of the Bay of Bengal.
3609.Peninsular rivers in India are not flooded as much as the Himalayan rivers. The reasons can be?
1. India’s peninsular rivers have relatively steep gradients.
2. There is little variation in flow from the dry to wet seasons.
3. Most rivers do not form deltas.
Choose the correct answer using the codes below.
1 and 2 only
2 and 3 only
1 and 3 only
1 only
Explanation:
India’s peninsular rivers have relatively steep gradients and thus rarely give rise to floods ofthe type that occur in the plains of northern India, despite considerable variations in flowfrom the dry to wet seasons. Forming Delta or not is irrelevant to the flooding of rivers. Itdepends more on the river’s silt load, water volume flow, and gradient of flow.
3610.The Himalayan Mountains are tectonic in origin, dissected by fast-flowing rivers which are in their youthful stage. Which of the following features made by rivers can be seen there?
1. Gorges
2. V-shaped valleys
3. Rapids
4. Waterfalls
Choose the correct answer using the codes below.
1, 2 and 4 only
1, 2 and 3 only
3 and 4 only
All of the above
Explanation:
The Himalayas along with other Peninsular mountains are young, weak and flexible in theirgeological structure unlike the rigid and stable Peninsular Block. Consequently, they are stillsubjected to the interplay of exogenic and endogenic forces, resulting in the development offaults, folds and thrust plains. These mountains are tectonic in origin, dissected by fastflowing rivers which are in their youthful stage. Therefore, various landforms like gorges,Vshaped valleys, rapids, waterfalls, etc. are indicative of this stage. These are both due tothe speed of the rivers as well as the weak geological structure.
3611.The Kashmir Himalayas are famous for Karewa formations, which are useful for the cultivation of
Zafran, a local variety of saffron
buckwheat, a local nutritional coarse grain
turnips, a local health supplement
All of the above
Explanation:
The valley of Kashmir has many types of soils like: Gurti (clay), Bahil (Loam), Sekil (Sandy),Nambaal (Peats), Surzamin, Lemb, Floating garden soils and Karewa soils. Karewaformations are lake-laid clays and shales. These are lacustine (lake related. deposits andappear like flat mounds on the margin of high mountains. Below these karewas is spread thealluvium of the Jehlum. The highest karewa is near the Pir Panjal.
3612.The British introduced tea plantations in the Darjiling and Sikkim Himalayas looking at some of the favourable conditions which were
1. Steep slopes
2. thick soil cover with low organic content
3. well distributed rainfall
4. mild winters
Choose the correct answer using the codes below.
1, 2 and 4 only
1, 2 and 3 only
3 and 4 only
All of the above
Explanation:
Tea plantation cannot grow in steep slopes, it requires moderate slopes. Moreover, soil withhigh organic content is needed for tea plantation. Moreover, mild winter and wellwww.distributed rainfall made the Darjeeling and Sikkim Himalayas an ideal destination for theBritish to grow tea plantations.
3613.The Tarai region of the Northern plains supports luxurious growth of natural vegetation and varied wild life population. This is because and swampy conditions region here
Re-emerging rivers from Bhabhar flow in undemarcated channels here creating marshy
all fertile coarse load is deposited at Tarai region after rivers re-emerge from Bhabar
the Tarai region is crossed by large Himalayan rivers which regularly deposit silt and clay
Both 1 and 3
Explanation:
Bhabar is a narrow belt ranging between 8-10 km parallel to the Shiwalik foothills at thebreak-up of the slope. As a result of this, the streams and rivers coming from the mountainsdeposit heavy materials of rocks and boulders, and at times, disappear in this zone. South ofthe Bhabar is the Tarai belt, with an approximate width of 10-20 km where most of thestreams and rivers re-emerge without having any properly demarcated channel, thereby,creating marshy and swampy conditions known as the Tarai. This has a luxurious growth ofnatural vegetation and houses a varied wild life. The Terai is crossed by the large perennialHimalayan rivers Yamuna, Ganges, Sarda, Karnali, Narayani and Kosi that have each builtalluvial fans covering thousands of square kilometres below their exits from the hills.
3614.Consider the following statements about the Western and Eastern Ghats.
1. Western Ghats are comparatively higher in elevation than Eastern ghats.
2. Western Ghats are more continuous than the Eastern Ghats as the latter is eroded by several east flowing rivers.
3. The Eastern and the Western Ghats meet each other at the Nilgiri hills.
Choose the correct answer using the codes below.
1 and 2 only
2 and 3 only
1 and 3 only
All of the above
Explanation:
Most of the Peninsular rivers have their origin in the Western Ghats. Eastern Ghatscomprising the discontinuous and low hills are highly eroded by the rivers such as theMahanadi, the Godavari, the Krishna, the Kaveri, etc. Some of the important ranges includethe Javadi hills, the Palconda range, the Nallamala hills, the Mahendragiri hills, etc. TheEastern and the Western Ghats meet each other at the Nilgiri hills.
3615.Consider the following statements with regard to Western coastal plain
1. The western coastal plains provides natural conditions for the development of ports and harbours
2. The rivers flowing through western coastal plains do not form any deltas
Choose the correct answer using the codes below.
1 only
2 only
Both 1 and 2
None of the above
Explanation:
The western coastal plains are an example of submerged coastal plain. Because of thissubmergence it is a narrow belt and provides natural conditions for the development ofports and harbours. Kandla, Mazagaon, JLN port Navha Sheva, Marmagao, Mangalore,Cochin, etc. are some of the important natural ports located along the west coast. The riversflowing through the western coastal plain do not form any delta.
3616.Consider the following rivers
1. Krishna
2. Kaveri
3. Godavari
4. Penganga
The correct sequence of these rivers when arranged from south to north is
2, 1,3 and 4
1,2,3 and 4
1, 3, 4 and 2
3, 2, 1 and 4
3617.Assertion (A): The frequency of floods in North Indian plains has increased in recent times.
Reason (R): There has been reduction in the depth of river valleys due to deposition of silt.
Both A and R are true and R is the correct explanation of A
Both A and R are true but R is not the correct explanation of A
A is true but R is false
A is false but R is true
3618.The second statement is true as deposition reduces the depth and in rainy season the river outflows leading to flood.
Given are the Indian Rivers and corresponding National Parks
1. Lohit Orang National Park
2. Chambal Rajaji National Park
3. Narmada Kanha National Park
Select the correct match
Only 2
1 and 3
Only 3
1, 2 and 3
Explanation:
Rajaji National Parkspread across Dehradun, Haridwar and Pauri districts ofUttarakhand.Kanha National Park located in the upper reaches of Narmada and The Orang NationalPark, located on the north bank of the Brahmaputra River in the Darrangand Sonitpurdistricts of Assam.
3619.Which of the following Rivers does not pass through Tropic of Cancer?
Sabarmati
Mahi
Damodar
Luni
Explanation:
The River Luni: In Rajasthan
3620.Amongst the following the river that passes through most number of countries?
Zambezi
River Severn
Danube
Missisippi
Explanation:
The Danube River touches or passes through ten countries, more than anyother river. The Danube begins in Germany and encounters Austria, Slovakia, Hungary,Croatia, Serbia, Romania, Bulgaria, Moldova, and Ukraine. It eventually flows into the BlackSea.
3621.Consider the following statements
1. The West flowing rivers contains very less amounts of Silt and due to its fast speed it cannot make delta.
2. Rivers arriving into a sea with high tidal range will not form delta because the changes in the tidal area will wash away the sediments brought by the river.
3. Western rivers flows in the fault region created by the mountains Vindhya and Satpura which are rocky and devoid of any alluvial material. Hence no Delta formation
Select the correct statement/s
Only 1
1 and 2
1, 2 and 3
Only 2
3622.Imagine you are travelling from New Delhi towards North. If you go vertically upwards towards Jammu and Kashmir,
select the correct sequence in which you will cross these rivers
Ravi-Beas-Ravi-Satluj-Jhelum
Satluj-Beas-Ravi-Chenab-Indus
Satluj-Beas-Ravi-Chenab-Jhelum
Ravi-Beas-Ravi-Satluj-Indus
Explanation:
If one travels vertically upward, he/she will not cross Jhelum as it flows NorthWestof J&K. Other rivers will come in the sequence as mentioned in option 2.
3623.Suppose you are travelling along the Eastern Ghat on Eastern Coast of India from Northern to Southern region, the sequence in which you will cross these rivers
Krishna-Godavari-Mahanadi-Kaveri
Mahanadi-Krishna -Godavari-Kaveri
Krishna-Godavari-Mahanadi-Kaveri
Mahanadi-Godavari-Krishna-Kaveri
3624.Consider the statements w.r.t Ganges Drainage System and Peninsular Drainage System
1. Peninsular rivers bear the exception of flowing through Rift valleys, like Narmada, while Ganges Rivers have no such feature.
2. All Peninsular rivers are characterized by fixed course, absence of meanders and non-perennial flow of water while Ganges rivers are perennial, having meanders and have non-fixed courses.
Select the correct statement/s
Only 1
Only 2
Both
None
Explanation:
Damodar River, a river Ganges River System occupies the eastern margins ofthe Chotanagpur Plateau where it flows through a rift valley. So, first statement is wrong.Peninsular rivers are characterized by fixed course, absence of meanders and non-perennialflow of water. The Narmada and Tapi which flow through the rift valley are, however,exceptions. Hence none of the statements are correct.
3625.Consider the following Dams
1. Barna Dam Chambal River
2. Pawna Dam Maval River
3. Maithoon Dam Barakar River
4. Gandhi Sagar Dam Chambal River
Select the correct options
1, 2 and 3
3 and 4
1, 2, 3 and 4
1, 3 and 4
Explanation:
Barna Dam: Barna River in MPPawna Dam: Maval River in MaharashtraMaithoon Dam: Barakar River in JharkhandGandhi Sagar Dam: Chambal River in MP
3626.Snow line is a line above which no vegetation grows on high altitude mountains because of permanent snow cover. This snow line is higher for Eastern Himalayas compared to that of Western Himalayas. What are the reasons?
Consider the following statements
1. Eastern Himalayas are near to the Equator.
2. Western Himalayas are more continental in their location thus has lesser maritime influence.
3. Southwest monsoon winds have the moderating effect on the Western Himalayas.
Choose the correct code
1, 2 only.
1, 3 only.
2, 3 only.
All the above.
Explanation:
Snowline is a function of altitude and latitude. Higher is the latitude and altitude lower is thesnowline. Eastern Himalaya’s altitude as well as latitudinal location is lower compared toWestern Himalayas. Due to higher altitude as well as latitude the temperature is much lessin the Western Himalaya and as a consequence the snowline in the Western Himalaya is at alower altitude than in the Eastern Himalaya. Southwest monsoon winds bring more rainfallto Eastern Himalayas than compared to Western Himalayas. Thus monsoon winds can havemoderating effect on Eastern Himalayas and in turn increasing the altitude of snowline.Thus 3rd statement is wrong.
3627.Heat waves was in news recently which killed more than 2,500 people in the year 2015 till June.
Consider the following statements regarding heat waves
1. Heat wave’s adverse impact occurred mainly in Northern and Eastern region of India.
2. Severe heat waves come under National Calamity just like cold waves.
3. IMD recommended to declare a region as severe heat waves affected region if temperature
reached beyond 45 degree Celsius.
4. It is a natural calamity found in tropical regions and not in temperate regions.
Choose the correct statement/s from the code
1, 3 only
2, 3, 4 only
1, 2, 3 only
All the above
Explanation:
Heat waves impacted mainly in northern states like Uttar Pradesh, Bihar and Eastern states likeOdisha, Andhra Pradesh, Telangana.Central government has declared cold waves, tsunamis etc as National Calamity but not heat waves.Thus recently after the heat waves took toll of many lives country wide, there was a demand fromexperts as well as many states for heat waves to be declared as National Calamity.Heat waves are the phenomenon found not only in tropical regions but also in temperate regions.
3628.During monsoon season the ITCZ (inter tropical convergence zone) shifts almost upto 25 degree North latitude over the Indian subcontinent while it rarely crosses 15 degree North latitude in other regions. This is because
1. Vast landmass of Eurasia located to the North of the Equator.
2. Intense low pressure over the Northwestern region of Indian subcontinent and over the vast, high altitude Tibetan plateau pulls ITCZ Northwards.
3. Shifting of Westerly jet streams to the North of Tibetan plateauat the end of the month of May.
Choose the correct code from the following
1, 2 only.
2, 3 only.
1, 3 only.
All of the above.
Explanation:
Inter tropical convergence zone is termed as a thermal equator and is the zone where the Northeastand Southeast trade winds meet. This ITCZ shifts Northwards upto 25 degree North latitude duringthe months of June-July. This is facilitated by all the above points mentioned.Westerly jet streams: These shifts southward during winters because of the southern shift of entirepressure belts by some 10 degree latitudes which is in turn because of Southern shift of Sun towardsTropic of Capricorn during winters. These jet streams because of vast Tibetan plateau,get bifurcatedinto 2 parts, with one part traversing south of Himalyan mountains and the other to the north ofTibetan plateau. With the advent of summers and gradual shift of Sun towards Tropic of Cancer, thepart of the jet streams to the South of Himalayas gets weakened. At the end of the month of Maythe Westerly jet streams completely shifts to the North of Himalayas and thus becomes strongerover the Central China and also Japan. This Northern shift facilitates the Northward shift of ITCZ.
3629.The frequency of the cyclones is lower in Arabian sea when compared to Bay of Bengal. This is because
1. Arabian sea surface temperature is higher compared to that of Bay of Bengal.
2. Bay of Bengal receives the remnants of the typhoons originated in Northwestern Pacific ocean.
3. Arabian sea receives the remnants of cyclones from Bay of Bengal.
Choose the correct code from the following
1, 2 only.
1, 3 only.
2, 3 only.
All the above.
Explanation:
Bay of Bengal being a closed and a smaller water body, it has higher surface temperature comparedto Arabian sea.North Western region of Pacific ocean has the highest proportion of global tropical cyclones. Thesecyclones which originate in the Pacific ocean start moving towards south western direction andfinally reach Bay of Bengal. But by the time they reach, they almost lose their energy and onlyremnants of cyclones reach Bay of Bengal. Similarly the cyclones originated in Bay of Bengal reachArabian sea but only remnants of cyclones after shedding their energy while traversing over thepeninsular landmass.
3630.Consider the following statements regarding tropical cyclone which is one of the important determining factors for the success of Indian monsoons.
1. These are termed as the heat engines, which derive their energy from the condensation of
water vapor into water droplets/drops.
2. More than 50% of the energy derived is utilized to sustain the wind movement around the central eye.
3. A mature cyclone releases energy equivalent to that of 100 hydrogen bombs.
Which of the following statements are NOT true
1, 2only.
1, 3only.
2 only.
None of the above.
Explanation:
The energy is derived from the condensation of water vapor into water droplets and of this onlymeager 3% is utilized for sustaining the wind movemnents.
3631.Coal bed methane is released during coal mining and is generally recommended to extract it rather than letting it evaporate into the atmosphere when untapped because
1. CBM if is not extracted can cause fire hazards while mining deep areas.
2. CBM if allowed to escape into atmosphere, will get converted into carbon monoxide
which is a potent green house gas.
Which of the statements is/are the correct reason/s?
1 only.
2 only.
Neither 1 nor 2.
Both 1 and 2.
Explanation:
CBM doesn’t cause any as such fire hazards if left un extracted.CBM once extracted and used as a source of energy it will be less harmful to environment becausethe burning of CBM releases majorly carbon dioxide. But if it is not extracted it will escape intoatmosphere and get converted into carbon monoxide which is more potent green house gas thancarbon dioxide.
3632.Consider the following statements regarding the production and reserves of copper in India.
1. Rajasthan has the largest reserves of copper and is also the highest producer of copper in India.
2. India is self sufficient in copper production and also at times it has also exported copper to countries like Japan, South Korea etc.
3. Production of copper is a tedious job especially in India as the copper ore found in India as it is of the lower grade compared to International grade of the ore.
Which are the correct statements?
1 only.
1, 3 only.
2, 3 only.
3 only.
Explanation:
Rajasthan although has the highest reserves, it is not the highest producer. Madhya Pradesh is thehighest producer currently.The production of copper in India always falls short of demand and thus we import copper fromcountries like US, Japan, Canada etc.Third statement is true because in India the metal content in the ore is quite low compared tointernational average. The metal content is less than 1% in India while the international averagestands at 2.5%.
3633.Consider the following statements regarding biogas which is a very important source of energy in rural areas.
1. Biogas has a higher thermal efficiency compared to charcoal, cow dung, kerosene.
2. Not only biogas serves as a source of energy in the form of fuel but also can be used as source of manure for farm crops.
3. It is slightly less environment friendly as it releases green house gases when burnt as a fuel.
Choose the incorrect code from the following
1, 2 only.
2, 3 only.
3 only.
None of the above.
Explanation:
Biogas is a type of gas that is formed by the biological breakdown of organic matter in anoxygen deficient environment. It is counted as an eco friendly bio fuel. Biogas contains 60%methane and carbon dioxide. It can be employed for generating electricity and also asautomotive fuel. For example; each household builds its own plant to channel waste fromthe domestic toilet and nearby shelters for animals, usually pigs, cows into a sealed tank.The waste ferments and is naturally converted into gas and compost, resulting in improvedsanitary conditions at home.A large amount of straw, which was previously burned, is now put into biogas tanks toferment. This reduces air pollution from smoke and helps produce high-quality organicfertilizer.Biogas plants significantly lower the greenhouse effects on the earths atmosphere. Theplants lower methane emissions by entrapping the harmful gas and using it as fuel. Thus it isan environment friendly fuel.
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