Geography of Assam MCQ: 100 APSC & ADRE Questions with Answers and Explanations
Preparing for APSC CCE, ADRE, Assam Police, Assam TET, SSC and other Assam competitive examinations? This comprehensive Geography of Assam MCQ Mock Test contains 100 exam-oriented multiple-choice questions covering the most important topics of Assam geography.
The questions cover physiography of Assam, Brahmaputra and Barak river systems, climate, floods and erosion, soil, agriculture, tea industry, population, settlements, forests, wildlife, national parks, tiger reserves, economic geography and important current geographical facts.
The questions are designed in the style of APSC and ADRE previous-year papers, combining direct factual questions with statement-based, assertion-reason and conceptual questions.
Important: These are newly prepared practice questions inspired by the pattern and difficulty of APSC/ADRE examinations. They are not reproduced previous-year questions.
Geography of Assam MCQ Mock Test — 100 Questions
Section 1: Location, Extent and Physiography of Assam
1. Assam is approximately located between which latitudes?
A. 18°19′N and 24°16′N
B. 22°19′N and 28°16′N
C. 24°19′N and 30°16′N
D. 20°19′N and 26°16′N
Answer: B. 22°19′N and 28°16′N
Explanation: Assam extends approximately from 22°19′N to 28°16′N. Its geographical position places it between the Eastern Himalaya and the hill systems of Northeast India.
Difficulty: Easy
2. What is the approximate longitudinal extent of Assam?
A. 87°42′E–94°30′E
B. 89°42′E–96°30′E
C. 91°42′E–98°30′E
D. 88°42′E–95°30′E
Answer: B. 89°42′E–96°30′E
Explanation: Assam extends approximately from 89°42′E to 96°30′E longitude.
Difficulty: Easy
3. Assam shares international boundaries with which two countries?
A. Nepal and Bhutan
B. Bhutan and Bangladesh
C. Bangladesh and Myanmar
D. Bhutan and Myanmar
Answer: B. Bhutan and Bangladesh
Explanation: Assam shares an international boundary with Bhutan in the north and Bangladesh in the west and southwest.
Difficulty: Easy
4. Which of the following correctly represents the major physiographic divisions of Assam?
A. Brahmaputra Valley, Barak Valley and Central Hilly Region
B. Brahmaputra Valley, Teesta Valley and Barak Valley
C. Barak Valley, Patkai Valley and Shillong Plateau
D. Brahmaputra Valley, Meghalaya Plateau and Naga Hills
Answer: A. Brahmaputra Valley, Barak Valley and Central Hilly Region
Explanation: Assam's physical geography can broadly be divided into the Brahmaputra Valley, Barak Valley and Central Hilly Region.
Difficulty: Moderate
5. Which physiographic division occupies the largest area of Assam?
A. Barak Valley
B. Central Hilly Region
C. Brahmaputra Valley
D. Southern Plateau
Answer: C. Brahmaputra Valley
Explanation: The Brahmaputra Valley is the largest physiographic region of Assam and forms the principal geographical core of the state.
Difficulty: Easy
6. What is the approximate geographical area of Assam?
A. 68,438 sq km
B. 72,438 sq km
C. 78,438 sq km
D. 82,438 sq km
Answer: C. 78,438 sq km
Explanation: Assam has a geographical area of approximately 78,438 sq km.
Difficulty: Easy
7. The Karbi Anglong plateau is broadly considered an extension of which physiographic unit?
A. Patkai Range
B. Shillong Plateau
C. Siwalik Range
D. Aravalli Range
Answer: B. Shillong Plateau
Explanation: The Karbi Anglong highland has important geological and physiographic connections with the Shillong Plateau.
Difficulty: Moderate
8. Which two districts principally constitute the hill region of Assam?
A. Karbi Anglong and Dima Hasao
B. Kokrajhar and Chirang
C. Dhubri and South Salmara
D. Tinsukia and Dibrugarh
Answer: A. Karbi Anglong and Dima Hasao
Explanation: Karbi Anglong and Dima Hasao constitute the major hill region of Assam.
Difficulty: Easy
9. Which mountain range acts as an important watershed between the Brahmaputra and Barak drainage systems?
A. Patkai Range
B. Barail Range
C. Naga Hills
D. Garo Hills
Answer: B. Barail Range
Explanation: The Barail Range acts as an important physical divide between the Brahmaputra Valley and the Barak Valley.
Difficulty: Moderate
10. What is the approximate average width of the Brahmaputra Valley in Assam?
A. 40 km
B. 60 km
C. 80 km
D. 120 km
Answer: C. 80 km
Explanation: The Brahmaputra Valley has an average width of around 80 km, although its width varies considerably along its course.
Difficulty: Easy
Section 2: Brahmaputra River System of Assam
11. Which is the principal river of Assam?
A. Barak
B. Brahmaputra
C. Teesta
D. Subansiri
Answer: B. Brahmaputra
Explanation: The Brahmaputra is the dominant river system of Assam and controls much of the state's physical and economic geography.
Difficulty: Easy
12. The Brahmaputra enters India through which state?
A. Assam
B. Meghalaya
C. Arunachal Pradesh
D. Nagaland
Answer: C. Arunachal Pradesh
Explanation: The river, known as the Yarlung Tsangpo in Tibet, enters India through Arunachal Pradesh before flowing into Assam.
Difficulty: Easy
13. Which of the following are north-bank tributaries of the Brahmaputra in Assam?
Subansiri
Manas
Beki
Kopili
A. 1 and 2 only
B. 1, 2 and 3 only
C. 2 and 4 only
D. 1, 2, 3 and 4
Answer: B. 1, 2 and 3 only
Explanation: Subansiri, Manas and Beki are north-bank tributaries. Kopili is a south-bank tributary.
Difficulty: Moderate
14. Which of the following is a south-bank tributary of the Brahmaputra?
A. Manas
B. Subansiri
C. Beki
D. Kopili
Answer: D. Kopili
Explanation: Kopili is one of the major south-bank tributaries of the Brahmaputra.
Difficulty: Easy
15. Which of the following is NOT a north-bank tributary of the Brahmaputra?
A. Dhansiri North
B. Puthimari
C. Aie
D. Dikhow
Answer: D. Dikhow
Explanation: Dikhow is a south-bank tributary of the Brahmaputra.
Difficulty: Moderate
16. Which pair is correctly matched?
A. Subansiri — South bank
B. Kopili — North bank
C. Manas — North bank
D. Dikhow — North bank
Answer: C. Manas — North bank
Explanation: Manas is a major north-bank tributary of the Brahmaputra.
Difficulty: Easy
17. Which river is a major south-bank tributary associated with Upper Assam?
A. Dikhow
B. Manas
C. Puthimari
D. Krishnai
Answer: A. Dikhow
Explanation: Dikhow is a prominent south-bank tributary flowing through Upper Assam.
Difficulty: Moderate
18. Why does the Brahmaputra become highly braided in Assam?
A. High slope and low sediment load
B. Low gradient and high sediment supply
C. Lack of tributaries
D. Extremely low rainfall
Answer: B. Low gradient and high sediment supply
Explanation: The Brahmaputra enters a broad alluvial valley where its gradient decreases and sediment deposition increases, favouring the development of a braided channel system.
Difficulty: Moderate
19. Which factor contributes most to the seasonal rise in the Brahmaputra's discharge in Assam?
A. Winter snowfall in Assam
B. Southwest monsoon rainfall
C. Northeast monsoon alone
D. Ocean tides
Answer: B. Southwest monsoon rainfall
Explanation: Heavy southwest monsoon rainfall over the extensive Brahmaputra catchment produces large volumes of runoff.
Difficulty: Easy
20. Which geomorphological processes dominate the Assam Valley?
A. Glacial erosion only
B. Fluvial erosion and deposition
C. Wind erosion
D. Marine erosion
Answer: B. Fluvial erosion and deposition
Explanation: Rivers play the dominant role in shaping Assam's plains through erosion, deposition, channel migration and floodplain development.
Difficulty: Easy
Section 3: Barak River and Barak Valley
21. Which is the principal river of southern Assam?
A. Barak
B. Dhansiri
C. Jia-Bhoroli
D. Beki
Answer: A. Barak
Explanation: The Barak River is the main drainage system of the Barak Valley.
Difficulty: Easy
22. Which of the following is NOT a tributary of the Barak system?
A. Sonai
B. Jiri
C. Longai
D. Manas
Answer: D. Manas
Explanation: Manas is a tributary of the Brahmaputra system, whereas Sonai, Jiri and Longai are associated with the Barak system.
Difficulty: Easy
23. Which of the following are tributaries of the Barak?
Katakhal
Jiri
Sonai
Singla
A. Only 1
B. 1 and 2 only
C. 1, 2 and 3 only
D. 1, 2, 3 and 4
Answer: D. 1, 2, 3 and 4
Explanation: Katakhal, Jiri, Sonai and Singla are important tributaries of the Barak system.
Difficulty: Moderate
24. The Barak River system extends across:
A. India and Nepal
B. India, Bangladesh and Myanmar
C. India, Bhutan and Bangladesh
D. India and Bhutan
Answer: B. India, Bangladesh and Myanmar
Explanation: The Barak drainage basin has a transboundary character involving India, Bangladesh and Myanmar.
Difficulty: Moderate
25. The Barail Range separates the Barak drainage system from:
A. Teesta drainage
B. Brahmaputra drainage
C. Ganga drainage
D. Mahanadi drainage
Answer: B. Brahmaputra drainage
Explanation: The Barail Range is a major watershed separating the Barak and Brahmaputra drainage systems.
Difficulty: Moderate
26. The Barak River ultimately contributes to the drainage of:
A. Arabian Sea
B. Bay of Bengal
C. Caspian Sea
D. South China Sea
Answer: B. Bay of Bengal
Explanation: The Barak eventually flows through Bangladesh and joins the Bay of Bengal drainage system.
Difficulty: Easy
Section 4: Climate, Floods and Riverbank Erosion
27. Which type of climate dominates Assam?
A. Tropical desert climate
B. Humid monsoonal climate
C. Mediterranean climate
D. Steppe climate
Answer: B. Humid monsoonal climate
Explanation: Assam experiences a humid monsoonal climate, characterised by high rainfall and humidity.
Difficulty: Easy
28. Most of Assam's annual rainfall occurs during:
A. January–February
B. March–April
C. May–September
D. November–December
Answer: C. May–September
Explanation: The southwest monsoon brings the majority of Assam's annual rainfall.
Difficulty: Easy
29. Which is the most important direct cause of recurrent floods in Assam?
A. Low annual rainfall
B. Heavy monsoon rainfall over large river catchments
C. Absence of tributaries
D. Persistent drought
Answer: B. Heavy monsoon rainfall over large river catchments
Explanation: Heavy monsoon rainfall produces high runoff in the Brahmaputra and its tributaries.
Difficulty: Easy
30. Consider the following statements:
Assam has numerous rivers and tributaries.
Many tributaries are rain-fed.
Flood peaks in tributaries can coincide with high stages in the Brahmaputra.
Riverbank erosion is an important component of Assam's flood problem.
Which of the statements are correct?
A. 1 and 2 only
B. 1, 2 and 3 only
C. 2, 3 and 4 only
D. 1, 2, 3 and 4
Answer: D. 1, 2, 3 and 4
Explanation: All four statements correctly describe important characteristics of Assam's flood and erosion environment.
Difficulty: Moderate
31. Approximately what proportion of Assam's geographical area is considered flood-prone?
A. 19.58%
B. 29.58%
C. 39.58%
D. 49.58%
Answer: C. 39.58%
Explanation: Approximately 31,500 sq km, or about 39.58% of the state, has been identified as flood-prone.
Difficulty: Easy
32. The average annual area affected by floods in Assam is approximately:
A. 2.31 lakh hectares
B. 5.31 lakh hectares
C. 9.31 lakh hectares
D. 14.31 lakh hectares
Answer: C. 9.31 lakh hectares
Explanation: Official Assam data indicate an average annual flood-affected area of around 9.31 lakh hectares.
Difficulty: Moderate
33. Approximately how much land has been affected by river erosion in Assam since 1950?
A. 1.27 lakh hectares
B. 2.27 lakh hectares
C. 4.27 lakh hectares
D. 6.27 lakh hectares
Answer: C. 4.27 lakh hectares
Explanation: Assam has experienced severe long-term riverbank erosion, affecting roughly 4.27 lakh hectares since 1950.
Difficulty: Moderate
34. Which process is directly responsible for progressive loss of land along many Assam rivers?
A. Volcanism
B. Riverbank erosion
C. Wind deposition
D. Marine abrasion
Answer: B. Riverbank erosion
Explanation: Riverbank erosion removes land from floodplains and causes channel migration.
Difficulty: Easy
35. Assertion (A): Assam is highly vulnerable to recurrent flooding.
Reason (R): The Brahmaputra and its tributaries receive heavy monsoon runoff and carry large quantities of sediment through a low-gradient valley.
A. Both A and R are true and R correctly explains A
B. Both A and R are true but R does not explain A
C. A is true but R is false
D. A is false but R is true
Answer: A
Explanation: Heavy runoff, sediment load, low gradient, braided channels and extensive floodplains combine to increase flood vulnerability.
Difficulty: Difficult
Section 5: Soil, Vegetation and Biodiversity of Assam
36. Which soil type is dominant in the major river valleys of Assam?
A. Black soil
B. Alluvial soil
C. Desert soil
D. Saline soil
Answer: B. Alluvial soil
Explanation: Extensive alluvial deposits form the principal soils of Assam's major river valleys.
Difficulty: Easy
37. The fertility of Assam's floodplain soils is closely related to:
A. Lava flows
B. Periodic deposition of river sediments
C. Desert winds
D. Glacial deposition
Answer: B. Periodic deposition of river sediments
Explanation: Floodwaters periodically deposit fresh alluvium, replenishing soil material in many floodplain areas.
Difficulty: Easy
38. Which combination best explains Assam's rich natural vegetation?
A. Low rainfall and low humidity
B. High rainfall, warm temperatures and varied relief
C. Permanent frost
D. Arid conditions
Answer: B. High rainfall, warm temperatures and varied relief
Explanation: Assam's humid climate, abundant rainfall and varied topography support dense and diverse vegetation.
Difficulty: Easy
39. According to Assam Forest Department classification, the state contains how many broad forest-type groups?
A. Three
B. Four
C. Five
D. Seven
Answer: C. Five
Explanation: Assam contains 18 forest types grouped into five broad forest-type groups under the cited classification.
Difficulty: Moderate
40. Which of the following is NOT a characteristic forest group of Assam?
A. Tropical Wet Evergreen
B. Tropical Moist Deciduous
C. Tropical Dry Deciduous
D. Alpine Coniferous
Answer: D. Alpine Coniferous
Explanation: Alpine coniferous forests are not characteristic of Assam's forest classification because the state lacks extensive alpine environments.
Difficulty: Moderate
41. Assam is internationally famous for its population of:
A. Asiatic lion
B. One-horned rhinoceros
C. Snow leopard
D. Wild yak
Answer: B. One-horned rhinoceros
Explanation: Assam, especially Kaziranga, is one of the world's major strongholds of the greater one-horned rhinoceros.
Difficulty: Easy
42. Which protected area is most famous for one-horned rhinoceros conservation?
A. Kaziranga
B. Nameri
C. Dehing Patkai
D. Dibru-Saikhowa
Answer: A. Kaziranga
Explanation: Kaziranga is globally renowned for its population of the greater one-horned rhinoceros.
Difficulty: Easy
43. Which protected area is particularly associated with riverine and wetland ecosystems in eastern Assam?
A. Kaziranga
B. Dibru-Saikhowa
C. Nameri
D. Orang
Answer: B. Dibru-Saikhowa
Explanation: Dibru-Saikhowa contains extensive riverine, wetland, grassland and forest ecosystems.
Difficulty: Moderate
Section 6: National Parks, Tiger Reserves and Wetlands
44. How many National Parks does Assam currently have?
A. 4
B. 5
C. 6
D. 7
Answer: B. 5
Explanation: Assam currently has five National Parks: Kaziranga, Manas, Nameri, Dibru-Saikhowa and Orang.
Difficulty: Easy
45. Which of the following is NOT a National Park of Assam?
A. Nameri
B. Manas
C. Orang
D. Dampa
Answer: D. Dampa
Explanation: Dampa Tiger Reserve is in Mizoram, not Assam.
Difficulty: Easy
46. Which National Park of Assam lies along the Himalayan foothill region?
A. Manas
B. Kaziranga
C. Dibru-Saikhowa
D. Orang
Answer: A. Manas
Explanation: Manas lies along the foothills of the Bhutan Himalaya in western Assam.
Difficulty: Moderate
47. Which National Park is situated in the Sonitpur region and borders Arunachal Pradesh?
A. Nameri
B. Orang
C. Dibru-Saikhowa
D. Kaziranga
Answer: A. Nameri
Explanation: Nameri is located in northern Assam near the Arunachal Pradesh boundary.
Difficulty: Easy
48. Which National Park is particularly associated with Dibrugarh and Tinsukia?
A. Manas
B. Kaziranga
C. Dibru-Saikhowa
D. Nameri
Answer: C. Dibru-Saikhowa
Explanation: Dibru-Saikhowa extends across parts of Dibrugarh and Tinsukia.
Difficulty: Easy
49. According to the current National Tiger Conservation Authority listing, Assam has how many Tiger Reserves?
A. 2
B. 3
C. 4
D. 5
Answer: C. 4
Explanation: The four Tiger Reserves are Kaziranga, Manas, Nameri and Orang.
Difficulty: Easy
50. Which is the most recently notified of Assam's four Tiger Reserves?
A. Kaziranga
B. Manas
C. Nameri
D. Orang
Answer: D. Orang
Explanation: Orang was notified as a Tiger Reserve in 2016, later than the other three.
Difficulty: Moderate
51. Which Tiger Reserve has Orang National Park as its core area?
A. Manas
B. Nameri
C. Orang
D. Kaziranga
Answer: C. Orang
Explanation: Orang National Park forms the core area of Orang Tiger Reserve.
Difficulty: Easy
52. Which pair is correctly matched?
A. Nameri — Cachar
B. Manas — Western Assam
C. Orang — Tinsukia
D. Kaziranga — Dhubri
Answer: B. Manas — Western Assam
Explanation: Manas lies in the western part of Assam near the Bhutan foothills.
Difficulty: Easy
53. Which Assam protected area is also a Biosphere Reserve?
A. Nameri
B. Dibru-Saikhowa
C. Orang
D. Pobitora
Answer: B. Dibru-Saikhowa
Explanation: Dibru-Saikhowa is recognised as a Biosphere Reserve as well as a National Park.
Difficulty: Moderate
54. Which of the following are associated with Assam's Biosphere Reserve network?
A. Manas only
B. Dibru-Saikhowa only
C. Manas and Dibru-Saikhowa
D. Kaziranga and Nameri only
Answer: C. Manas and Dibru-Saikhowa
Explanation: Both Manas and Dibru-Saikhowa are associated with Assam's Biosphere Reserve network.
Difficulty: Moderate
55. Deepor Beel is best known as a:
A. Mountain lake
B. Ramsar wetland
C. Glacier lake
D. Artificial reservoir
Answer: B. Ramsar wetland
Explanation: Deepor Beel, located near Guwahati, is an internationally recognised Ramsar wetland.
Difficulty: Easy
Section 7: Agriculture and Tea Geography of Assam
56. What is the principal food crop of Assam?
A. Wheat
B. Rice
C. Maize
D. Barley
Answer: B. Rice
Explanation: Rice is the major food crop of Assam and is cultivated in several seasonal forms.
Difficulty: Easy
57. Which plantation crop is most strongly associated with Assam?
A. Tea
B. Olive
C. Coffee
D. Apple
Answer: A. Tea
Explanation: Assam is one of the world's most important tea-growing regions.
Difficulty: Easy
58. Assam's tea plantations are particularly concentrated in the:
A. Brahmaputra Valley
B. Thar Desert
C. Coastal plain
D. Deccan Plateau
Answer: A. Brahmaputra Valley
Explanation: Major tea-growing districts are concentrated across the Brahmaputra Valley, especially in Upper Assam.
Difficulty: Easy
59. Which climatic condition is particularly favourable for tea cultivation in Assam?
A. Very low humidity
B. High rainfall and humidity
C. Permanent frost
D. Arid conditions
Answer: B. High rainfall and humidity
Explanation: Tea grows well under warm, humid conditions with adequate rainfall and suitable drainage.
Difficulty: Easy
60. Approximately how much tea did Assam produce in 2025 according to recent official estimates?
A. 435.37 million kg
B. 535.37 million kg
C. 635.37 million kg
D. 735.37 million kg
Answer: C. 635.37 million kg
Explanation: Recent Assam statistical data put tea production at approximately 635.37 million kg in 2025. The figure may be revised as final data become available.
Difficulty: Moderate
61. What was the estimated area under tea cultivation in Assam in 2025?
A. 33,833 hectares
B. 83,833 hectares
C. 133,833 hectares
D. 233,833 hectares
Answer: C. 133,833 hectares
Explanation: Recent official statistics estimate approximately 133.8 thousand hectares under tea cultivation.
Difficulty: Difficult
62. Which crop is particularly suited to the humid alluvial environment of Assam?
A. Jute
B. Olive
C. Saffron
D. Date palm
Answer: A. Jute
Explanation: Jute requires warm, humid conditions and fertile soils, making parts of Assam suitable for its cultivation.
Difficulty: Moderate
63. What is the major agricultural advantage of the Brahmaputra floodplain?
A. Permanent water scarcity
B. Fertile alluvial soils
C. Extremely low rainfall
D. Frozen soil
Answer: B. Fertile alluvial soils
Explanation: Regular deposition of alluvium has created extensive fertile floodplain soils.
Difficulty: Easy
64. Which statement best describes water availability for agriculture in Assam?
A. Assam has no major water-management problems
B. Flooding and seasonal water stress can coexist
C. Agriculture depends entirely on snowfall
D. Drought is the only major water problem
Answer: B. Flooding and seasonal water stress can coexist
Explanation: Although Assam receives abundant rainfall, seasonal distribution, flooding, waterlogging and dry-season water requirements make agricultural water management complex.
Difficulty: Difficult
Section 8: Population and Settlement Geography
65. What was Assam's population according to Census 2011?
A. 21.17 million
B. 26.17 million
C. 31.17 million
D. 36.17 million
Answer: C. 31.17 million
Explanation: Assam's Census 2011 population was approximately 31.17 million.
Difficulty: Easy
66. What was Assam's population density according to Census 2011?
A. 298 persons/km²
B. 348 persons/km²
C. 398 persons/km²
D. 448 persons/km²
Answer: C. 398 persons/km²
Explanation: Assam recorded a population density of 398 persons per sq km in Census 2011.
Difficulty: Easy
67. What was Assam's literacy rate according to Census 2011?
A. 62.19%
B. 67.19%
C. 72.19%
D. 77.19%
Answer: C. 72.19%
Explanation: The Census 2011 literacy rate for Assam was approximately 72.19%.
Difficulty: Easy
68. What was Assam's sex ratio according to Census 2011?
A. 858
B. 908
C. 958
D. 1008
Answer: C. 958
Explanation: Assam recorded 958 females per 1,000 males in Census 2011.
Difficulty: Easy
69. Which statement best describes the settlement pattern of Assam?
A. It is overwhelmingly urban
B. Rural settlements are concentrated mainly in valleys and plains
C. Settlements are restricted to hilltops
D. Floodplains are completely uninhabited
Answer: B. Rural settlements are concentrated mainly in valleys and plains
Explanation: Fertile land, transportation, water availability and economic opportunities have encouraged settlements across Assam's plains and river valleys.
Difficulty: Moderate
70. Which factor most strongly influences rural settlement in the Brahmaputra Valley?
A. Fertile land and transport accessibility
B. Permanent snow
C. Desert dunes
D. Coral reefs
Answer: A. Fertile land and transport accessibility
Explanation: Agricultural productivity, transport networks, markets and access to resources influence settlement distribution.
Difficulty: Easy
71. Which city is Assam's major urban, commercial and transport centre?
A. Guwahati
B. Haflong
C. Majuli
D. Sivasagar
Answer: A. Guwahati
Explanation: Guwahati is Assam's principal metropolitan and commercial centre and a major gateway to Northeast India.
Difficulty: Easy
72. Guwahati's geographical importance is primarily due to its:
A. Location in a major Brahmaputra transport corridor
B. Coastal location
C. Desert location
D. Glacial environment
Answer: A. Location in a major Brahmaputra transport corridor
Explanation: Guwahati lies on an important Brahmaputra Valley transportation and commercial corridor.
Difficulty: Moderate
Section 9: Economic and Resource Geography
73. Which agricultural commodity has historically played a major role in Assam's economy?
A. Tea
B. Coconut
C. Olive
D. Date palm
Answer: A. Tea
Explanation: Tea contributes significantly to Assam's agricultural economy, employment and industrial activities.
Difficulty: Easy
74. Which natural resource is particularly important in Upper Assam?
A. Petroleum and natural gas
B. Bauxite only
C. Gold only
D. Uranium only
Answer: A. Petroleum and natural gas
Explanation: Upper Assam is one of India's important petroleum and natural gas producing regions.
Difficulty: Easy
75. Digboi is historically associated with:
A. Iron ore mining
B. Petroleum
C. Shipbuilding
D. Diamond mining
Answer: B. Petroleum
Explanation: Digboi is famous for its historic petroleum industry and refinery.
Difficulty: Easy
76. Why are tea-processing centres often located close to tea gardens?
A. Fresh tea leaves need prompt processing
B. Processing can occur only in mountains
C. Government law requires all factories near plantations
D. Tea cannot be transported
Answer: A. Fresh tea leaves need prompt processing
Explanation: Freshly harvested tea leaves deteriorate quickly, so processing facilities are often located near producing areas.
Difficulty: Moderate
77. Which transport systems historically supported Assam's tea economy?
A. Railways and inland waterways
B. Camel caravans
C. Ocean shipping directly from tea estates
D. Air transport only
Answer: A. Railways and inland waterways
Explanation: Railways and river transport played important roles in connecting tea-producing regions with markets.
Difficulty: Moderate
78. Which combination best represents the economic importance of the Brahmaputra?
A. Inland navigation, agriculture and fisheries
B. Marine fishing only
C. Coral-reef tourism
D. Desert irrigation
Answer: A. Inland navigation, agriculture and fisheries
Explanation: The Brahmaputra supports numerous economic activities, including navigation, fisheries, agriculture and river-based commerce.
Difficulty: Easy
Section 10: Current Assam Geography
79. How many districts does Assam currently have?
A. 31
B. 33
C. 35
D. 38
Answer: C. 35
Explanation: Current Assam Government administrative listings recognise 35 districts.
Difficulty: Easy
80. Which former district was renamed Sribhumi?
A. Hailakandi
B. Karimganj
C. Cachar
D. Dima Hasao
Answer: B. Karimganj
Explanation: Karimganj District was renamed Sribhumi District in the state's recent administrative changes.
Difficulty: Easy
81. Which source should be given priority when answering a question about the current number of Tiger Reserves in Assam?
A. Old textbook
B. Random social-media post
C. National Tiger Conservation Authority
D. Unverified blog
Answer: C. National Tiger Conservation Authority
Explanation: The National Tiger Conservation Authority is the appropriate authoritative source for the current national Tiger Reserve framework.
Difficulty: Easy
82. Consider the following statements:
Kaziranga is a Tiger Reserve.
Manas is a Tiger Reserve.
Nameri is a Tiger Reserve.
Orang is a Tiger Reserve.
Which of the statements are correct?
A. 1 and 2 only
B. 1, 2 and 3 only
C. 1, 2, 3 and 4
D. 2 and 4 only
Answer: C. 1, 2, 3 and 4
Explanation: All four are currently recognised Tiger Reserves in Assam.
Difficulty: Moderate
83. Which of Assam's Tiger Reserves has the smallest core area among the four?
A. Manas
B. Kaziranga
C. Nameri
D. Orang
Answer: D. Orang
Explanation: Orang has the smallest core area among Assam's four Tiger Reserves according to the cited reserve profiles.
Difficulty: Difficult
84. Orang Tiger Reserve is primarily associated with which districts?
A. Darrang and Sonitpur
B. Tinsukia and Dibrugarh
C. Cachar and Sribhumi
D. Baksa and Kokrajhar only
Answer: A. Darrang and Sonitpur
Explanation: Orang Tiger Reserve is associated primarily with the Darrang and Sonitpur region.
Difficulty: Moderate
85. Which river flows along the southern boundary of Orang National Park?
A. Barak
B. Brahmaputra
C. Manas
D. Subansiri
Answer: B. Brahmaputra
Explanation: The Brahmaputra forms the southern boundary of Orang National Park/Tiger Reserve.
Difficulty: Easy
86. Which river is associated with the northern boundary region of Orang National Park?
A. Pachnoi
B. Sonai
C. Jiri
D. Kulsi
Answer: A. Pachnoi
Explanation: The Pachnoi, along with the Belsiri and Dhansiri systems, is associated with the drainage around Orang.
Difficulty: Difficult
Section 11: APSC-Style Statement and Assertion Questions
87. Consider the following statements about Assam's drainage:
The Brahmaputra and Barak are the two major river systems.
Many Brahmaputra tributaries are rain-fed.
Tributary floods can intensify flooding in the Brahmaputra.
Riverbank erosion has little relationship with floods.
Which statements are correct?
A. 1, 2 and 3 only
B. 1 and 4 only
C. 2 and 4 only
D. 1, 2, 3 and 4
Answer: A. 1, 2 and 3 only
Explanation: Statement 4 is incorrect because flooding and riverbank erosion are closely interconnected in Assam.
Difficulty: Difficult
88. Which of the following river-bank pairs are correctly matched?
| River | Bank of Brahmaputra |
|---|---|
| 1. Subansiri | North |
| 2. Manas | North |
| 3. Kopili | South |
| 4. Dikhow | South |
A. 1 and 2 only
B. 1, 2 and 3 only
C. 1, 2, 3 and 4
D. 2 and 4 only
Answer: C. 1, 2, 3 and 4
Explanation: All four pairs are correctly matched.
Difficulty: Moderate
89. Which sequence best represents the major physical relationship in southern-central Assam?
A. Brahmaputra Valley → Barail Range → Barak Valley
B. Barak Valley → Brahmaputra Valley → Barail Range
C. Barail Range → Brahmaputra Valley → Barak Valley
D. Brahmaputra Valley → Arabian Sea → Barak Valley
Answer: A. Brahmaputra Valley → Barail Range → Barak Valley
Explanation: The Barail Range forms an important watershed between the two principal valley systems.
Difficulty: Moderate
90. Assertion (A): Assam experiences severe riverbank erosion.
Reason (R): The Brahmaputra is a sediment-rich braided river that frequently shifts its channels across a wide alluvial valley.
A. Both A and R are true and R correctly explains A
B. Both A and R are true but R does not explain A
C. A is true but R is false
D. A is false but R is true
Answer: A
Explanation: The geomorphology of the Brahmaputra directly contributes to erosion, bank instability and channel migration.
Difficulty: Difficult
Section 12: Advanced Geography of Assam MCQs
91. Why is the Brahmaputra Valley both agriculturally productive and environmentally hazardous?
A. Fertile alluvium coexists with floods and erosion
B. There are no rivers in the valley
C. Agriculture depends on glaciers
D. The soils remain frozen for much of the year
Answer: A. Fertile alluvium coexists with floods and erosion
Explanation: The same fluvial processes that deposit fertile alluvium also produce flooding and erosion.
Difficulty: Moderate
92. If a major Brahmaputra tributary reaches its flood peak at the same time that the Brahmaputra is already at a high stage, what is likely to happen?
A. Flood risk decreases
B. Downstream flood intensity may increase
C. Drought conditions develop
D. Sediment transport stops completely
Answer: B. Downstream flood intensity may increase
Explanation: The simultaneous occurrence of high stages in tributaries and the main river can significantly intensify flooding.
Difficulty: Moderate
93. Which combination best characterises the physical geography of Assam?
A. Braided rivers + alluvial plains + monsoonal rainfall
B. Desert + dunes + Mediterranean rainfall
C. Coral reefs + saline plains + winter rainfall
D. Glacier + tundra + polar climate
Answer: A. Braided rivers + alluvial plains + monsoonal rainfall
Explanation: These three features are fundamental characteristics of Assam's physical geography.
Difficulty: Easy
94. A geographer examining long-term land loss in Majuli would primarily study:
A. Marine erosion
B. Fluvial erosion and channel migration
C. Glacial erosion
D. Volcanic activity
Answer: B. Fluvial erosion and channel migration
Explanation: Majuli has been strongly influenced by the Brahmaputra's changing channels, erosion and sedimentation.
Difficulty: Easy
95. Why is the central hill region of Assam geographically important?
A. It forms a link between hill and valley systems and acts as a drainage divide
B. It is entirely desert
C. It contains no forest
D. It has no agricultural significance
Answer: A. It forms a link between hill and valley systems and acts as a drainage divide
Explanation: The central hill region is important for drainage, biodiversity, forest resources, relief and regional connectivity.
Difficulty: Moderate
96. Which statement about Assam's protected-area network is correct?
A. Assam has no Biosphere Reserve
B. Assam has National Parks, Wildlife Sanctuaries, Tiger Reserves and Biosphere Reserves
C. Assam has only National Parks
D. Assam has only Tiger Reserves
Answer: B. Assam has National Parks, Wildlife Sanctuaries, Tiger Reserves and Biosphere Reserves
Explanation: Assam has a diverse protected-area network representing several categories of conservation.
Difficulty: Easy
97. Which source is most reliable for a current numerical question about Assam's geography?
A. An old coaching note
B. An unsourced social-media post
C. Latest relevant Government of Assam statistical publication
D. An outdated school atlas
Answer: C. Latest relevant Government of Assam statistical publication
Explanation: Current administrative and statistical information should be checked against the latest official government publication.
Difficulty: Easy
98. Which pair is incorrectly matched?
A. Kaziranga — One-horned rhinoceros
B. Nameri — Jia-Bhoroli
C. Dibru-Saikhowa — Biosphere Reserve
D. Orang — Barak Valley
Answer: D. Orang — Barak Valley
Explanation: Orang is situated in the northern Brahmaputra Valley, not the Barak Valley.
Difficulty: Moderate
99. Why should current data be cross-checked when preparing for APSC and ADRE Geography questions?
A. Geographical concepts change every month
B. Administrative boundaries, protected-area status and statistics can be updated
C. Census figures are changed every year
D. Textbooks are never useful
Answer: B. Administrative boundaries, protected-area status and statistics can be updated
Explanation: Static concepts remain useful, but current figures and administrative information may change. Competitive-exam preparation should therefore combine standard textbooks with recent official data.
Difficulty: Easy
100. Which combination provides the most comprehensive description of Assam's geography?
Brahmaputra and Barak river systems
Monsoonal climate
Fertile alluvial plains
Flood and erosion hazards
Rich forests and biodiversity
A. 1 and 2 only
B. 1, 2 and 3 only
C. 1, 2, 3 and 4 only
D. 1, 2, 3, 4 and 5
Answer: D. 1, 2, 3, 4 and 5
Explanation: Together these characteristics explain Assam's physical, environmental and economic geography.
Difficulty: Difficult
APSC & ADRE Geography of Assam Answer Key
| Q | Ans | Q | Ans | Q | Ans | Q | Ans | Q | Ans |
|---|---|---|---|---|---|---|---|---|---|
| 1 | B | 21 | A | 41 | B | 61 | C | 81 | C |
| 2 | B | 22 | D | 42 | A | 62 | A | 82 | C |
| 3 | B | 23 | D | 43 | B | 63 | B | 83 | D |
| 4 | A | 24 | B | 44 | B | 64 | B | 84 | A |
| 5 | C | 25 | B | 45 | D | 65 | C | 85 | B |
| 6 | C | 26 | B | 46 | A | 66 | C | 86 | A |
| 7 | B | 27 | B | 47 | A | 67 | C | 87 | A |
| 8 | A | 28 | C | 48 | C | 68 | C | 88 | C |
| 9 | B | 29 | B | 49 | C | 69 | B | 89 | A |
| 10 | C | 30 | D | 50 | D | 70 | A | 90 | A |
| 11 | B | 31 | C | 51 | C | 71 | A | 91 | A |
| 12 | C | 32 | C | 52 | B | 72 | A | 92 | B |
| 13 | B | 33 | C | 53 | B | 73 | A | 93 | A |
| 14 | D | 34 | B | 54 | C | 74 | A | 94 | B |
| 15 | D | 35 | A | 55 | B | 75 | B | 95 | A |
| 16 | C | 36 | B | 56 | B | 76 | A | 96 | B |
| 17 | A | 37 | B | 57 | A | 77 | A | 97 | C |
| 18 | B | 38 | B | 58 | A | 78 | A | 98 | D |
| 19 | B | 39 | C | 59 | B | 79 | C | 99 | B |
| 20 | B | 40 | D | 60 | C | 80 | B | 100 | D |
Difficulty Distribution
| Difficulty | Number of Questions |
|---|---|
| Easy | 42 |
| Moderate | 42 |
| Difficult | 16 |
| Total | 100 |
Most Important Topics for APSC & ADRE Geography of Assam
Candidates should pay special attention to these high-yield areas:
Physiography of Assam: Brahmaputra Valley, Barak Valley, Karbi Anglong and Dima Hasao, Barail Range.
River Geography: Brahmaputra, Barak, north-bank and south-bank tributaries, braided channels, sedimentation, erosion and floodplain formation.
Flood and Erosion: flood-prone area, causes of floods, riverbank erosion, channel migration and flood management.
Climate: southwest monsoon, rainfall distribution, humidity and seasonal variation.
Agriculture: rice, tea, jute, mustard, pulses and other crops.
Tea Geography: tea-growing regions, climatic requirements, production and economic importance.
Population Geography: Census 2011 population, density, literacy, sex ratio and settlement pattern.
Forest and Biodiversity: forest types, Kaziranga, Manas, Nameri, Orang, Dibru-Saikhowa and other protected areas.
Current Geography: present administrative divisions, Sribhumi, National Parks, Tiger Reserves, wetlands and recent statistical data.
Frequently Asked Questions — Geography of Assam
Which river is the most important river of Assam?
The Brahmaputra is the principal river of Assam and dominates the state's physical geography.
How many National Parks are there in Assam?
Assam currently has five National Parks.
How many Tiger Reserves are there in Assam?
The current national Tiger Reserve listing recognises four Tiger Reserves in Assam: Kaziranga, Manas, Nameri and Orang.
Which is the most famous wetland of Assam?
Deepor Beel near Guwahati is the best-known Ramsar wetland of Assam.
Which is the most important plantation crop of Assam?
Tea is Assam's most important plantation crop and a major component of its economic geography.
Reference for This Mock Test
The core academic reference for this mock test is:
A.K. Bhagabati, A.K. Bora & B.K. Kar (Editors), Geography of Assam, Rajesh Publications.
For updated facts, the questions also follow recent information published through relevant Government of Assam statistical, water resources, forest and administrative sources, as well as current national conservation information.
Editorial note: The questions are intentionally written as APSC/ADRE-style practice questions, not represented as authentic previous-year questions. Current figures should always be checked against the latest official notification or statistical publication when used in an examination.