byju’s classes: 9980837187€¦ · byju’s classes: 9980837187 ans 1. c explanation: to provide...

BYJU’s Classes: 9980837187

Ans 1. C

Explanation: To provide opportunities for education to children is a Fundamental duty of the parents/guardian under Part IVA of the Indian Constitution while providing children up to the age of 6 years with education and childhood care should be endeavour of the state as per Article 45 in Part IV Difficulty level: Moderate Topic: Part IV Type: Conceptual Ans 2.D

Explanation: • A few Fundamental Rights are available to the people (not just citizens). For instance, Article 25 i.e.., the Right to Religion is available equally to all people. • Article 17 (Abolition of Untouchability) is available against private individual. • There is an exception to the suspension of Fundamental rights during emergency i.e.., Article 21 (Right

to life). Difficulty level: Difficult Topic: Part III

Type: Conceptual Ans 3. A

Explanation: • In 1976, the SardarSwaran Singh Committee recommended the incorporation of the Fundamental Duties. Part IV A was added to the Constitution consisting of Article 51 A containing ten Fundamental Duties in 1976 by 42nd Amendment Act. In 2002, through 86th Amendment Act, one more Fundamental Duty was added. The Indian Constitution adopted the idea of Fundamental Duties from the Constitution of erstwhile USSR. • These are confined only to the citizens of India. Difficulty level:Difficult Topic: Part IVA Type: Memory based Ans 4.A

Explanation: • No unit constituting the Indian union can secede from it. • Acquisition of a foreign territory is governed by international law. In Berubari Union case, the Supreme Court was of the view that Article 1 does not confer power to acquire foreign territories. • Exclusive Economic Zone extends up to 200 nautical miles into the sea from the shore base line Difficulty level: Difficult Topic: Part I Type: Conceptual

Ans 5.C Explanation:Article 3 in Part I of the Indian constitution talks about alteration of areas, boundaries and names of the existing states. Difficulty level: Moderate Topic: Part I Type: Memory based

Ans 6.B

Explanation: • OR was introduced by Pandit Nehru on 13th December 1946, which was adopted on January 22, 1947 by the Constituent assembly. • ‘Integrity’ was also added to the preamble by 42nd amendment act. Difficulty level: Moderate Topic: Preamble Type: Memory based

Ans 7.C

Explanation: • The Objectives resolution was introduced by JawaharLal Nehru, which was later adopted as the Preamble of Indian constitution with certain changes.


• OR declared the India as Independent Sovereign Republic. Although Constituent assembly became fully sovereign only after Indian independence act, 1947 Difficulty level: Difficult Topic: Constituent Assembly Type: Memory based

Ans 8.C

Explanation: • Article 43 talks about a living wage and a decent standard of life, which is a part of Gandhian as well as Socialist ideology. • Article 44 seeks to secure Uniform Civil Code throughout the territory of India. Difficulty level: Difficult Topic: Part IV Type: Conceptual

Ans 9. D Explanation:• Article 12 defines the state which includes the Government and Parliament of India and

the Legislature of each state and all local or ‘other authorities’. This 1981 judgement of the Supreme court laid down the principles for determining which all authorities can be considered ‘state’ Difficulty level: Difficult Topic: Part III Type: Conceptual

Ans 10. B

Explanation: • Equality before law has been adopted from the Irish Constitution. • In Indrasawhney v. Union of India case SC opined that Article 14 has to be understood in the light of

Directive principles. • Under it, person means legal person as well as individuals Difficulty level: Difficult Topic: Part III Type: Memory based

Ans 11. C Difficulty level: Moderate Topic: Part III Type: Conceptual Ans 12.C Explanation:On 26th November 1949, 3 provisions i.e.., Elections, citizenship and provisional Parliament came into force and rest of the provisions only on 26th January 1950 Difficulty level: Moderate Topic: Constituent Assembly Type: Memory based

Ans. 13. A

Explanation: • The draft constitution, prepared by B.N Rau, was published in January 1948 and people of India were

given approximately 8 months to discuss. • He was appointed as the Constitutional advisor Difficulty level: Easy Topic: Constituent Assembly Type: Memory based

Ans 14. B Explanation:Constituent assembly was constituted under Cabinet Mission Plan in November 1946 with 389 members Difficulty level: Easy Topic: Constituent Assembly Type: Memory based


Ans 15. C Explanation:Article 11 empowers the Parliament to regulate the right of citizenship by law, which includes termination and acquisition of citizenship. Difficulty level: Moderate Topic: Part II Type: Conceptual Ans 16. C Explanation:A state government has no jurisdiction to determine question of citizenship, unless the function is delegated by the central government under Article 258 of the Indian constitution. Difficulty level: Moderate Topic: Part II Type: Conceptual

Ans 17. A

Explanation: • Article 15 (5) empowers the State to make special provisions related to admissions in educational

institutions including private institutes. • It excludes Minority educational institutions referred to in Article 30 Difficulty level: Moderate Topic: Part III Type: Conceptual Ans 18. C

Explanation: • Article 16 deals with Equality in employment. • Parliament is authorized to prescribe residence as a condition for certain employments. • Under Article 371 (D), Parliament had introduced this kind of provision for the state of Andhra Pradesh. Difficulty level: Moderate Topic: Part III Type: Conceptual Ans 19. D

Explanation: • State is empowered to impose reasonable restrictions on the grounds of integrity of India, friendly relation to foreign state, public order, morality, contempt of court, defamation and provocation to an offence. • In original constitution, there were 7 rights under Article 19 but through 44th amendment act, 1978, the right to acquire, hold and dispose of property was deleted Difficulty level: Moderate Topic: Part III

Type: Conceptual Ans 20. A

Explanation: • Retrospective laws can be enforced on civil or tax laws. • Prohibition under it cannot be claimed in case of preventive detention Difficulty level: Moderate

Topic: Part III Type: Conceptual Ans 21. D

Explanation: • 20 (1)- No retrospective law • 20 (2)- No double jeopardy • 20 (3)- No self-incrimination Difficulty level: Moderate Topic: Part III Type: Memory based Ans 22. B


Explanation: • Right to life is available against the state. • Social life is life with dignity Difficulty level: Moderate Topic: Part III Type: Conceptual Ans 23.D Difficulty level: Moderate Topic: Part III Type: Conceptual Ans 24. D

Explanation: • Although traffic is prohibited, but it permits the state to impose compulsory service for public purposes like military or social service. • In imposing such service, the state shall not make discrimination on grounds only of religion, race,

caste or class. This means gender based discrimination is allowed Difficulty level: Moderate Topic: Part III Type: Conceptual Ans 25.A Explanation:Court martial are related with Military tribunal, under military law. Difficulty level: Moderate Topic: Part III Type: Conceptual Ans 26. B Explanation:Union government can impose this law. Difficulty level: Moderate Topic: Part III Type: Conceptual Ans 27. B Explanation:It has not been enforced in all the states. (North-eastern states) Difficulty level: Difficult Topic: Part III Type: Conceptual Ans 28. B

Difficulty level: Easy Topic: Part III Type: Conceptual Ans 29.C

Explanation: • Article 32 (3) empowers parliament.

• Judicial review under Articles 32 and 226 is basic feature of the constitution Difficulty level: Moderate Topic: Part III Type: Conceptual Ans 30. B

Explanation: • Article 335 directs the government to promote with special care the educational and economic interests of the weaker sections. • Article 350 (A) directs the state to provide adequate facilities for instruction in mother-tongue at the primary stage of education. Similarly Article 351 is a directive for development of Hindi language. • Article 39 (b) and Article 39 (c) can be given precedence over Article 14, 19 and not all the Directive Principles


Difficulty level: Moderate Topic: Part IV Type: Conceptual Ans 31. D

Explanation: • Fundamental duties are meant for citizens only. • These are non-justiciable but patriotic duties of the citizen Difficulty level: Moderate Topic: Part IVA Type: Conceptual Ans 32. C Explanation:Protection and improvement of environment is covered under Fundamental duties (citizens)

as well as DPSPs (state). Difficulty level: Moderate Topic: Part IV

Type: Conceptual Ans 33. A Explanation:Supreme Court opined that Preamble is an integral part of the constitution and is not enforceable but can be amended in Keshavananda Bharti case Difficulty level: Moderate Topic: Preamble Type: Conceptual Ans 34. A

Explanation: • Laws made under articles 2 and 3 provide for the amendment of first schedule and fourth schedule. • Article 4 (2) clearly says that it shall not be deemed to be an amendment for the purposes of Article 368 Difficulty level: Moderate Topic: Part I Type: Conceptual Ans 35. A

Explanation: • BCCI is not financially, functionally or administratively dominated by the Government. • Article 12 defines ‘state’. Difficulty level: Moderate Topic: Part III Type: Conceptual

Ans 36. A

Explanation: • FRs can be amended but the basic structure of the constitution should not be violated. • In K.Bharti case, SC opined that Article 368 will not come under Article 13 Difficulty level: Moderate Topic: Part III

Type: Conceptual Ans 37. B Difficulty level: Moderate Topic: Part III Type: Conceptual Ans 38. A

Explanation: • Equal treatment to un-equals is nothing but inequality. • Positive discrimination is allowed as per situation Difficulty level: Moderate Topic: Part III


Type: Conceptual Ans 39. B Explanation:President, Governor, MPs, MLAs, high commissioners, foreign sovereign bodies including embassies, UNO and its officials are immune to Article 14 Difficulty level: Moderate Topic: Part III Type: Conceptual Ans 40.A Explanation:State can confer on citizens or foreigners, military and academic distinctions. Difficulty level: Moderate Topic: Part III Type: Memory based

Ans 41. D Explanation:Under the protection of civil rights act, offences committed on ground of untouchability lead

to disqualification from election to parliament and state legislature Difficulty level: Moderate Topic: Part III Type: Conceptual Ans 42. A Explanation:Article 15 (3) empowers the state to make provisions favouring women and children. For instance, reservation to women and free education to children Difficulty level: Moderate Topic: Part III Type: Conceptual Ans 43. D

Explanation: • National Backward Class Commission was established as a statutory body in 1993, after the Government accepted Ramanandan Committee Report. • SC in Mandal case opined that a statutory body should be established to check complaints of over and under inclusion in OBC list. • IndraSawhney v. Union of India case is popularly known as Mandal case. SC gave judgement on Article 16 (4) of the constitution in this case Difficulty level: Difficult Topic: Part III Type: Memory based

Ans44. B Explanation:Text of the Preamble says it clearly. Difficulty level: Easy Topic: Part I Type: Conceptual Ans 45. C

Explanation: • Article 1 defines the “territory of India”. • Article 2 deals with admission or establishment of new states Difficulty level: Moderate Topic: Part Type: Memory based Ans 46. A Difficulty level: Moderate Topic: Part I Type: Memory based Ans 47. C


Difficulty level: Easy Topic: Part I Type: Conceptual Ans 48. D Difficulty level: Moderate Topic: Part I Type: Conceptual Ans 49. C

Explanation: • Article 39 (b) and Article 39 (c) can be given precedence over Article 14, 19 and not all the Directive Principles. • Article 31A says that judicial review will not be possible if the President reserves a bill for his own

consideration and then gives assent. • Article 31B is linked with Schedule IX Difficulty level: Moderate

Topic: Fundamental rights Type: Conceptual Ans 50. C

Explanation: • Article 42 under Part IV of the constitution (DPSP’s) directs the state to make provisions for securing just and humane conditions of work and for maternity relief. • The 2016 amendment to the act provides maternity leaves to women up to 12 weeks, with an extension up to 26 weeks. It has also introduced maternity leaves for women who adopt a child, below the age of 3 months. The Act covers women workers employed in establishments with 10 or more employees, and other notified establishments. However, a majority of the women workforce, who are in the unorganized sectors, may not be covered Difficulty level: Moderate Topic: Part IV Type: Conceptual Ans 51. A Difficulty level: Moderate Topic: Indian Physiography Type: Factual Ans 52. A Explanation: Map based question


Difficulty level: Difficult Topic: Indian Physiography Type: Factual Ans 53. D Explanation: Karewas are lacustrine deposits [deposits in lake] in the Valley of Kashmir. These are the flat topped mounds that border the Kashmir Valley on all sides. They are characterized with fossils of mammals and at places by peat. The karewas are mainly devoted to the cultivation of saffron, almond, walnut, apple and orchards. Difficulty level-Difficult Topic- Indian Physiography Type-Conceptual

Ans 54. D Explanation: In Kashmir Valley, the meanders in Jhelum river are caused by the local base level provided by the erstwhile larger lake of which the present Dal Lake is a small part.The southernmost part of this region consists of longitudinal valleys known as ‘duns’. Jammu dun and Pathankot dun are important examples Difficulty level-Moderate Topic- Indian Physiography Type- Conceptual

Ans 55. C Explanation: Himalayas block the cold dry winds blowing from central Asia and Siberia and prevents them from entering into Indian plains. Himalayas force the moisture laden southwest monsoon winds to shed rainfall in India or else India would be a dry region. The moderating effect on peninsular India is caused by the effect of adjacent Indian ocean on three sides of Indian peninsula Difficulty level- Moderate Topic- Indian Physiography Type- Conceptual Ans 56. D

Explanation:


The correct arrangement is as follows 1. Shipki La pass Himachal Pradesh 2. Niti Pass Uttarakhand 3. Thang La Uttarakhand 4. Nathu La Sikkim Difficulty level- Difficult Topic- Indian Physiography Type-Difficult Ans 57. B Explanation: Nanga Parbat is the peak in Kashmir. Nanda Devi is in Uttarakhand, the Mt Everest is located in Nepal and Kanchenjunga is located in Sikkim Difficulty level-Difficult Topic- Indian Physiography

Type-Factual Ans 58. C

Explanation: Eastern Himalayas receive around 200 cm of rainfall compared to western Himalayas.The North eastern regions receive greater rainfall than western regions. Western Himalayas have thick coniferous forests while Eastern Himalayas are covered with evergreen forests .In case of western Himalayas, there 3 different ranges of Himadri, Himachal and Shiwalik. The Himachal and shiwalik ranges merge into single range in eastern Himalayas Difficulty level-Difficult Topic- Indian Physiography Type-Conceptual Ans 59. C Explanation:From the north to the south, these can be divided into three major zones: the Bhabar, the

Tarai and the alluvial plains. Bhabar is a narrow belt ranging between 8-10 km parallel to the Shiwalik

foothills at the break-up of the slope where the streams and rivers coming from the mountains deposit

heavy materials of rocks and boulders.

The Alluvial Plains are divided further into Khadar and Bhangar regions Difficulty level-Moderate Topic- Indian Physiography Type-Factual Ans 60. C Explanation:Wheat is a temperate crop predominantly grown in Northern India in the Rabi season. Rice is considered to be a crop of tropical humid areas, it has about 3,000 varieties which are grown in different agro-climatic regions Difficulty level-Moderate Topic- Indian Soils and Vegetation Type-Conceptual Ans 61. B

Explanation:Barren island is the only active volcano in the Indian subcontinent. Difficulty level-Easy

Topic- Indian Physiography Type-Factual

Ans 62. A Explanation:Map Based Question Difficulty level-Easy Topic- Indian Physiography Type- Factual

Ans 63. D Explanation:Pulses grow well even under water scarce conditions compared to the water guzzling sugarcane crop. India is both the leading producer and consumer of pulses


Difficulty level-Moderate Topic- Indian Soils and Vegetation Type-Factual

Ans 64. D Difficulty level-Difficult Topic- Indian Soils and Vegetation Type-Conceptual

Ans 65. C Explanation:Map based question Difficulty level-Moderate Topic- Indian Physiography Type-Factual

Ans 66. C Explanation:The tropical areas being close to the equator experiences high temperature throughout the

year with small daily and annual range. North West India experiences very hot summers and equally harsh winters. In fact in a single day the temperature varies a great deal Difficulty level-Moderate Topic- Indian Climate and Monsoon Type-Conceptual

Ans 67. D Difficulty level-Moderate Topic- Indian Climate and Monsoon Type-Conceptual

Ans 68. C Difficulty level-Easy Topic- Indian Climate and Monsoon Type-Factual

Ans 69. C

Explanation: El Niño–Southern Oscillation (ENSO) is an irregular periodical variation in winds and sea surface

temperatures over the tropical eastern Pacific Ocean, affecting much of the tropics and subtropics. The

warming phase is known as El Niño and the cooling phase asLa Niña. While El Nino Weakens the

monsoon ,La Nina Strengthens it.

The Indian Ocean Dipole (IOD), also known as the Indian Niño, is an irregular oscillation of sea-surface

temperatures in which the western Indian Ocean becomes alternately warmer and then colder than the

eastern part of the ocean

Difficulty level-Moderate Topic- Indian Climate and Monsoon Type-Conceptual

Ans 70. D

Explanation: The peninsular region does not have a well defined cold season. There is hardly any noticeable seasonal change in temperature pattern during winters due to the moderating influence of the sea Difficulty level-Moderate Topic- Indian Climate and Monsoon Type-Conceptual

Ans 71. B

Explanation:


Topic- Indian Climate and Monsoon Difficulty level-Difficult Type-Conceptual Ans 72. A Explanation: A Western Disturbance is an extra-tropical storm originating in the Mediterranean region that brings sudden winter rain to the north-western parts of the Indian subcontinent. It is caused by the westerlies Difficulty level-Easy Topic- Indian Climate and Monsoon Type-Conceptual

Ans 73. C

Explanation: North East Himalayas receive the highest amount of rainfall. The windward side of western ghats receives the highest rainfall while the leeward side is drought prone Difficulty level-Moderate Topic- Indian Climate and Monsoon Type-Conceptual

Ans 74. B Explanation:

The months of October and November are known for retreating monsoons. By the end of September, the southwest monsoon becomes weak as the low pressure trough of the Ganga plain starts moving southward in response to the southward march of the sun. The monsoon retreats from the western Rajasthan by the first week of September. The retreating southwest monsoon season is marked by clear skies and rise in temperature. The land is still moist. Owing to the conditions of high temperature and

humidity, the weather becomes rather oppressive. This is commonly known as the ‘October heat’. The weather in the retreating monsoon is dry in north India but it is associated with rain in the eastern part of the Peninsula. Here, October and November are the rainiest months of the year Difficulty level-Difficult Topic- Indian Climate and Monsoon Type-Conceptual


Ans 75. C

Explanation: Tropical cyclones are generally smaller than temperate cyclones but are more destructive due to very high wind speed. Tropical cyclones only develop overseas where than can get abundant supply of warm water while temperate cyclones mostly develop over continents .While temperate cyclones does not originate in India but they are carried by westerly Jet streams from Mediterranean region to India during winter season Difficulty level-Difficult Topic- Indian Climate and Monsoon Type-Conceptual

Ans 76. D

Explanation: Shifting cultivation also known as slash and burn agriculture is practised in certain pockets of forests

inhabited by the tribals which involves clearing a patch of land and primitive methods of cultivation solely for subsistence. It leads to forest degradation and loss in biodiversity of the region Difficulty level-Moderate

Topic- Indian Soils and Vegetation Type-Conceptual

Ans 77. A

Explanation: At 1,500 m above the sea level, vegetation is temperate in the higher regions, and subtropical on the lower regions of the Western Ghats, especially in Kerala, Tamil Nadu and Karnataka. The temperate forests are called Sholas in the Nilgiris, AnaimalaiandPalani hills. Difficulty level-Easy Topic- Indian Soils and Vegetation Type-Factual

Ans 78. A Explanation:Warm sea surface temperature is an ideal platform for cyclones Difficulty level-Moderate Topic- Indian Climate and Monsoon Type-Conceptual

Ans 79. B Explanation:Mawsynram receives the highest rainfall during south west monsoon Difficulty level-Moderate Topic- Indian Climate and Monsoon Type-Conceptual

Ans 80. C Explanation:Lohit is the tributary of river Bramhaputra Difficulty level-Moderate Topic- Indian Rivers Type-Factual

Ans 81. A

Explanation: The dendritic pattern develops where the river channel follows the slope of the terrain. The stream with its tributaries resembles the branches of a tree Difficulty level-easy Topic- Indian rivers Type-Factual

Ans 82. B Explanation:Map Based Question Difficulty level-Difficult Topic- Indian rivers Type-Factual


Ans 83. A Explanation:River Ganga exhibits all the features mentioned Difficulty level-Moderate Topic- Indian rivers Type-Conceptual Ans 84. C

Explanation: The Sundarban forest lies in the vast delta on the Bay of Bengal formed by the super confluence of the Ganges, Padma, Brahmaputra and Meghna rivers The Sundarban Delta derived its name from the Sundari tree which grows in marshland. It is the world’s largest and fastest growing delta. It is also the home of Royal Bengal tiger Difficulty level-Moderate Topic- Indian rivers

Type-Factual

Ans 85.C

Explanation:Map based question Difficulty level-Moderate Topic- Indian rivers Type - factual

Ans 86.B

Explanation: They do not have fixed season to shed their leaves, to flower or fruition. That is why they appear to be green all-year round Deciduous forests shed leaves during a specific season Difficulty level-Moderate Topic- Indian Soils and Vegetation Type-Conceptual

Ans 87.C

Explanation: The Brahmaputra Valley is said to be one of the most hazard-prone regions in India. The embankments are filled with sediment greatly reducing the water carrying capacity of the river resulting in floods Difficulty level- Moderate Topic- Indian Rivers Type- Conceptual

Ans 88.B

Explanation: Table 3.1 : Comparison between the Himalayan and the Peninsular River

SL No Aspects Himalayan River Peninsular River

1 Place of origin Himalayan mountain covered with glaciers Peninsular plateau and

central highland

2 Nature of flow Perennial: receive water from glacier and rainfall

Seasonal: dependent on monsoon rainfall

3 Type of drainage Antecedent and consequent leading to dendritic pattern in plains

Super imposed, rejuvenated resulting in trellis, radial and rectangular patterns

4 Nature of river Long course, flowing through the rugged mountains experiencing headward erosion river capturing: In plains meandering and shifting of course

Smaller, fixed course with well-adjusted valleys

5 Catchment area Very large basins Relatively smaller basin

6 Age of the river Young and youthful, active and deepening in the valleys

Old rivers with graded profile, and have almost reached their base levels


Difficulty level-Moderate Topic- Indian rivers Type – Conceptual

Ans 89.B

Explanation: The course of a river has been divided into three stages- youth, mature and old. In youth stage, river has high energy and it flows from steep slopes. It has highly erosive character and forms different landforms like V-shape valley, rapids, cascades, waterfalls, pot holes, plunge pools etc. As river enters a relatively plain area, it enters into mature stage. The volume of river water increases but its speed slows down. In this stage river shows erosion and deposition simultaneously. On one end, it makes cliff bank on meanders and on the other side it makes point bars. In its old stage where erosion stops and only deposition takes place, it makes natural levees, flood plains, braided channels, river islands and deltas

Difficulty level- Moderate Topic- Indian Rivers Type-Conceptual

Ans 90.C

Explanation: Majuli is one of the largest riverine islands in the world located on river Brahmaputra Difficulty level- easy Topic- Indian Rivers Type-factual

Ans 91.D

Explanation: Kayals are a distinguishing feature of Malabar coast (Kerala) and not Karnataka Kayals are used for fishing and inland navigation. Every year the famous Nehru Trophy Vallamkali (boat race) is held in PunnamadaKayal in Kerala Difficulty level- Easy Topic- Indian Rivers Type-Factual

Ans 92.A

Explanation: Clayey soils have the highest water holding capacity. Loams are classified as sandy, silty, or clay rich.Texture largely determines the ability of the soil to retain water. Coarse textured soils have large gaps between soil particles which allow water to easily penetrate them and have less water holding capacity. Hence larger the particle, lower is its water holding capacity Difficulty level-Moderate

Topic- Indian Soils and Vegetation Type-Conceptual

Ans 93.B Difficulty level-Easy Topic- Indian Soils and Vegetation Type-Factual

Ans 94.A

Explanation: Alluvial Soils are immature and have weak profiles due to their recent origin Black soil being clayey and fine textured has high water retention capacity. Red soils are usually poor growing soils, low in nutrients and humus and difficult to cultivate because of its low water holding capacity. These soils are deficient in lime, magnesia, phosphates, nitrogen, humus and potash. Intense leaching is a menace to these soils. Under irrigation, they can produce excellent crops like cotton, wheat, pulses, tobacco, jowar, linseed, millet, potatoes and fruits Difficulty level-Difficult Topic- Indian Soils and Vegetation Type-Conceptual


Ans 95.B

Explanation:

Annual Rainfull Type of Vegetation

200 cm or more Evergreen Rain Forests

100 to 200 cm Monsoon Deciduous Forests

50 to 100 cm Drier Deciduous or Tropical Savanna

25 to 50 cm Dry Thorny Scrub (Semi-arid)

Below 25 cm Desert (Arid)

Difficulty level-Difficult Topic- Indian Soils and Vegetation Type-Conceptual

Ans 96.D

Explanation:

Difficulty level-Moderate Topic- Indian Soils and Vegetation Type-Factual

Ans 97.A

Explanation: The black soil is very deep. These soils are also known as the Regur Soil or the Black Cotton Soil. The black soils are generally clayey, deep and impermeable. They swell and become sticky when wet and shrink when dried. So, during the dry season, these soil develop wide cracks. Thus, there occurs a kind of self-ploughing. Because of this character of slow absorption and loss of moisture, the black soil retains the moisture for a


very long time, which helps the crops, especially, the rain fed ones, to sustain even during the dry season. Black soils are formed by the denudation of volcanic rocks. Chemically, the black soils are rich in lime, iron, magnesia and alumina. They also contain potash. But they lack in phosphorous, nitrogen and organic matter. The colour of the soil ranges from deep black to grey Difficulty level-Easy Topic- Indian Soils and Vegetation Type-Conceptual

Ans 98.A

Explanation: The Complex network of roots of the mangroves act as effective buffer against the intruding sea water. Certain species of mangroves filter the salt at the root level while others store it in their bark and leaves Difficulty level-Difficult Topic- Indian Soils and Vegetation

Type-Conceptual

Ans 99.B

Explanation: India grows both short staple (Indian) cotton as well as long staple (American) cotton called ‘narma’ in north-western parts of the country Difficulty level-Moderate Topic- Indian Soils and Vegetation Type-Conceptual

Ans 100.D

Explanation: Irrigation covers approximately only about 33 per cent of the cultivated area in India. The crop production in rest of the cultivated land directly depends on rainfall. Poor performance of south-west Monsoon also adversely affects the supply of canal water for irrigation. On the other hand, the rainfall in Rajasthan and other drought prone areas is too meagre and highly unreliable. Even the areas receiving high annual rainfall experience considerable fluctuations Difficulty level-Difficult Topic- Indian Soils and Vegetation Type-Conceptual

byju’s classes: 9980837187€¦ · byju’s classes: 9980837187 ans 1. c explanation: to provide...

Documents