Time Allowed: 2 Hours
Maximum Marks: 80
Q1. The Big Bang Theory is also called the: [1]
(a) Galaxy Theory
(b) Expanding Universe Hypothesis
(c) Nebular Hypothesis
(d) Galaxy Expansion Theory
Ans: (b) Expanding Universe Hypothesis
Q2. Which one of the following represents the inner planets: [1]
(a) Planets between the sun and the earth
(b) Planets between the sun and the belt of asteroids
(c) Planets in gaseous state
(d) Planets without satellites
Ans: (d) Planets without satellites
Q3. Which type of volcanic eruptions have caused Deccan Trap formations: [1]
(a) Shield
(b) Flood
(c) Composite
(d) Caldera
Ans: (b) Flood
Q4. Polar-fleeing force relates to: [1]
(a) Revolution of the earth
(b) Gravitation
(c) Rotation of the earth
(d) Tides
Ans: (c) Rotation of the earth
Q5. Which one of the following is the salient feature of metamorphic rocks: [1]
(a) Changeable
(b) Quite
(c) Crystalline
(d) Foliation
Ans: (a) Changeable
Q6. A deep valley with very steep to straight sides is called: [1]
(a) gorge
(b) Delta
(c) canyon
(d) ox-bow lakes
Ans: (a) gorge
Q7. In which of the following stages of landform development, downward cutting is dominated: [1]
(a) Youth stage
(b) Late mature stage
(c) Early mature stage
(d) Old stage
Ans: (a) Youth stage
Q8. The layer that contains ozone layer is called: [1]
(a) stratosphere
(b) atmosphere
(c) ionosphere
(d) mesosphere
Ans: (a) stratosphere
Q9. The sun is directly overhead at noon on 21st June at: [1]
(a) The equator
(b) 23.5° S
(c) 23.5° N
(d) 66.5° N
Ans: (a) The equator
Q10. The puffy clouds that sometimes look like pieces of floating cotton: [1]
(a) cotton cloud
(b) cumulus cloud
(c) front cloud
(d) occulant cloud
Ans: (b) cumulus cloud
Q11. The air that contains moisture to its full capacity: [1]
(a) Relative humidity
(b) Specific humidity
(c) Absolute humidity
(d) Saturated air
Ans: (d) Saturated air
Q12. Arrange the major underwater landforms in the correct order: [1]
(i) Continental slope
(ii) Continental shelf
(iii) Oceanic deeps
(iv) Deep sea plain
Options:
(a) i, ii, iii, iv
(b) iv, iii, ii, i
(c) ii, i, iv, iii
(d) iii, iv, ii, i
Ans: (c) ii, i, iv, iii
Q13. Make correct pairs from the following two columns and mark the correct option: [1]
Options:
(a) 1-B, 2-C, 3-A, 4-D
(b) 1 -A, 2-D, 3-B, 4-C
(c) 1-D, 2-B, 3-C, 4-A
(d) 1-C, 2-A, 3-D, 4-B
Ans:
(d) 1-C, 2-A, 3-D, 4-B
Q14. Most of the Indian Peninsula will be grouped according to Koeppen’s system under: [1]
(a) “Af”
(b) “BSh”
(c) “Cfb”
(d) “Am”
Ans: (d) “Am”
Q15. Read the case study given below and answer any three of the questions that follow.
Saline soils contain a larger proportion of sodium, potassium and magnesium, and thus, they are infertile and do not support any vegetative growth. They have more salts, largely because of dry climate and poor drainage. They occur in arid and semi-arid regions, and in water-logged and swampy areas.
Their structure ranges from sandy to loamy. They lack in nitrogen and calcium. Saline soils are more widespread in western Gujarat, deltas of the eastern coast and in Sunderbans areas of West Bengal. In the Rann of Kuchchh, the Southwest Monsoon brings salt particles and deposits there as a crust.
Seawater intrusions in the deltas promote the occurrence of saline soils. In the areas of intensive cultivation with excessive use of irrigation, especially in areas of Green Revolution, the fertile alluvial soils are becoming saline. Excessive irrigation with dry climatic conditions promotes capillary action, which results in the deposition of salt on the top layer of the soil. In such areas, especially in Punjab and Haryana, farmers are advised to add gypsum to solve the problem of salinity in the soil.
(i) Why do saline soils have more salts? [1]
(a) Because of dry climate
(b) Because of poor drainage
(c) Because of poor sunlight
(d) Both (a) and (c)
Ans: (d) Both (a) and (c)
(ii) Saline soils lack in: [1]
(a) Nitrogen and calcium
(b) Oxygen and calcium
(c) Nitrogen and helium
(d) All the above
Ans: (a) Nitrogen and calcium
(iii) In Punjab and Haryana, farmers are advised to add _____ to solve the problem of salinity in the soil. [1]
(a) Nitrate
(b) Gypsum
(c) Calcium
(d) Potassium
Ans: (b) Gypsum
Q16. Read the case study given below and answer any three of the questions that follow.
The Brahmaputra, one of the largest rivers of the world, has its origin in the Chemayungdung Glacier of the Kailash range near the Mansarovar lake. From here, it traverses eastward longitudinally for a distance of nearly 1,200 km in a dry and flat region of southern Tibet, where it is known as the Tsangpo, which means ‘the purifier.’
The Rango Tsangpo is the major right bank tributary of this river in Tibet. It emerges as a turbulent and dynamic river after carving out a deep gorge in the Central Himalayas near Namcha Barwa (7,755 m). The river emerges from the foothills under the name of Siang or Dihang. It enters India west of Sadiya town in Arunachal Pradesh.
Flowing southwest, it receives its main left bank tributaries, viz., Dibang or Sikang and Lohit; thereafter, it is known as the Brahmaputra. The Brahmaputra receives numerous tributaries in its 750 km long journey through the Assam valley. Its major left bank tributaries are the Burhi Dihing and Dhansari (South) whereas the important right bank tributaries are the Subansiri, Kameng, Manasand, Sankosh.
The Subansiri which has its origin in Tibet, is an antecedent river. The Brahmaputra enters into Bangladesh near Dhubri and flows southward. In Bangladesh, the Tista joins it on its right bank from where the river is known as the Jamuna. It finally merges with the river Padma, which falls in the Bay of Bengal.
The Brahmaputra is well-known for floods, channel shifting and bank erosion. This is due to the fact that most of its tributaries are large, and bring large quantity of sediments owing to heavy rainfall in its catchment area.
(i) Where does the River Brahmaputra originate? [1]
(a) Chemayungdung Glacier
(b) Zemu Glacier
(c) Namik Glacier
(d) Siachen Glacier
Ans: (a) Chemayungdung Glacier
(ii) The _____ is the major right bank tributary of Brahmaputra river in Tibet. [1]
(a) Rango Tsangpo
(b) Tsangpo Rango
(c) Rancho Tsangpo
(d) Namcha Tsangpo
Ans: (a) Rango Tsangpo
(iii) The Brahmaputra enters into Bangladesh near: [1]
(a) Jaflong
(b) Mawlynnong
(c) Dhubri
(d) Langchen Khambab
Ans: (c) Dhubri
Q17. Discuss the distribution of the earthquake and volcanic plates on the earth. [3]
Ans: Distribution of the Earthquake and the volcanic plates on the Earth:
Q18. Explain the various types of rains. [3]
Ans: Based on origin, rainfall may be classified into three main types – the convectional, orographic or relief and the cyclonic or frontal.
Q19. Explain the different types of ocean currents. [3]
Ans: The ocean currents may be classified based on their depth as surface currents and deep-water currents:
Based on temperature:
(i) Cold currents bring cold water into warm water areas. These currents are usually found on the west coast of the continents in the low and middle latitudes (in both hemispheres) and on the East coast in the higher latitudes in the Northern hemisphere.
(ii) Warm currents bring warm water into cold-water areas and are usually observed on the east coast of continents in the low and middle latitudes (in both hemispheres). In the Northern hemisphere, they are found on the West coasts of continents in high latitudes.
Q20. What is soil mainly composed of? [3]
Ans: The soil is made up of the following things:
Q21. What do you know about the ‘Disaster Management Bill’? [3]
Ans:
The Disaster Management Bill, 2005, defines disaster as a catastrophe, mishap, calamity or grave occurrence affecting any area, arising from natural or man-made causes, or by accident or negligence which results in substantial loss of life or human suffering or damage to, and destruction of, environment, and is of such nature or magnitude as to be beyond the coping capacity of the community of the affected area.
Q22. What are the major factors that are responsible for the loss of biodiversity? What steps are needed to prevent them? [5]
Ans:
Q23. Why are the rivers in India considered important? [5]
Ans: Importance of the rivers in India:
Q24. Notwithstanding the broad climatic unity, the climate of India has many regional variations. Elaborate this statement giving suitable examples. [5]
Ans:
Q25. What are black soils? Describe their formation and characteristics. [5]
Ans: The black soils are generally clayey, deep, and impermeable. They swell and become sticky when they are wet and they shrink when dried. Therefore, during the dry season, these soils develop wide cracks. Thus, there occurs a kind of self-ploughing. Volcanoes form them. They are also known as ‘Regur Soil’ or the ‘Black Cotton Soil’.
Features:
Q26. How are the Himalayan rivers different from the Peninsular rivers? [5]
Ans: Following are the important differences between Himalayan rivers and Peninsular rivers:
Q27. In the given outline map of the world there are five items marked as A, B, C, D and E. Identify the features with the help of information given below and write their correct names on the map: [5]
A. Largest country in Africa
B. An area of subsistence gathering
C. A lake of the Great Lakes Region
D. A terminal station of Trans-Siberian Railways
E. A major seaport
Ans:
Q28.
Locate and label the following on the political outline map of India: [5]
A. A state of out-migration
B. A city with more than 10 million population
C. An important node of north-south corridor
D. A major cotton textile centre
E. State with lowest population density
Ans:
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