CBSE Questions for Class 8 General Knowledge Resources Of India And World Quiz 10 - MCQExams.com

In the context of ecosystem productivity, marine upwelling zones are important as they increase the marine productivity by bringing the:
decomposer micro-organisms to the surface.
nutrients to the surface.
bottom-dwelling organisms to the surface.
Select the correct answer using the codes given below.
  • 1 and 2
  • Only 2
  • 2 and 3
  • Only 3
Polar bears are carnivores and prey on many arctic birds and fish. However, under natural conditions, no one found polar bears predating any penguin. This is because ___________.
  • penguins have chemical substance in their muscles which is toxic to polar bears.
  • penguins are gregarious and always move in groups. Therefore, a polar bear cannot approach them.
  • polar bears and penguins never coexist under natural conditions. The former lives in the North Pole while the latter lives in the South Pole.
  • polar bears and penguins display symbiotic relationships and they help each other for their existence in the ice-cold ecosystem.
What is the term applied to evolution of vegetation so that it becomes increasingly adapted to its environment?
  • Organic evolution
  • Plant succession
  • Climatic climax
  • Adaptation
Which one of the following is the correct sequence of ecosystems in the order of decreasing productivity?
  • Oceans, lakes, grasslands, mangroves
  • Mangroves, oceans, grasslands, lakes
  • Mangroves, grasslands, lakes, oceans
  • Oceans, mangroves, lakes, grasslands
Given below are the names of four energy crops. Which one of them can be cultivated for ethanol? 
  • Jatropha
  • Maize
  • Pongania
  • Sunflower
Tank irrigation is practised mainly in peninsular India because:
undulating relief and hard rocks make it difficult to dig canals and wells.
rivers are rain-fed.
of compact nature of population and agriculture fields.
Select the correct answer using the codes given below.
  • 1 and 2
  • 2 and 3
  • 1 and 3
  • 1, 2 and 3
Which one of the following ores is abundant in the region of Balaghat-Bhandara-Nagpur?
  • Iron
  • Manganese
  • Gold
  • Bauxite
Consider the following pairs.
Kerala            : Tapioca
Maharashtra  : Cotton
West Bengal  : Jute
Gujarat          : Groundnut
Which of the above pairs of states and their important crops are correctly matched?
  • 1, 2 and 3
  • 1, 2 and 4
  • 1, 3 and 4
  • 2, 3 and 4
Which of the following is/are the reason(s) behind Gujarat being the leading producer of salt in India?
The long length of coastline.
Long duration of hot and dry conditions.
Presence of gulf areas.
Select the correct answer using the codes given below.
  • 1 and 2
  • Only 2
  • 1, 2 and 3
  • 1 and 3
Which states in India are largest producer of sugarcane? 
  • Bihar and Uttar Pradesh
  • Uttar Pradesh and Rajasthan
  • Andhra Pradesh and Jammu and Kashmir
  • Punjab and Himachal Pradesh
Of the gross cropped area in India, the foodgrains occupy _________.
  • more than $$70\%$$
  • 60 and $$70\%$$
  • 50 and $$60\%$$
  • less than $$50\%$$
The petroleum deposits are found in _____________.
  • Assam, Gujarat, Bombay High and Tripura
  • Assam, Manipur, Nagaland and West Bengal
  • Assam, Gujarat, Tamil Nadu and Tripura
  • Gujarat, Manipur, Mizoram and Andaman
Among the following states, which one has the most suitable climatic conditions for the cultivation of a large variety of orchids with minimum cost of production, and can develop an export oriented industry in this field? 
  • Andhra Pradesh
  • Arunachal Pradesh
  • Madhya Pradesh
  • Uttar Pradesh
In terms of total energy generation in India the correct sequence in decreasing order of the concerned ones is __________.
  • Western, Northern, Southern, Eastern
  • Southern, Northern, Western, Eastern
  • Western, Southern, Eastern, Northern
  • Southern, Eastern, Western, Northern
Which dam of India is the highest?
  • Mettur-Bhakra
  • Rihand-Kosi
  • Thein-Mettur
  • Bhakra-Hirakud
If National Water Mission is properly and completely implemented, how will it impact the country?
Part of the water needs of urban areas will be met through recycling of waste water.
the water requirements of coastal cities with inadequate alternative sources of water will be met by adopting appropriate technologies that allow for the use of ocean water.
All the river of Himalaya origin will be linked to the rivers of peninsular India.
The expenses incurred by farmers for digging bore-wells and for installing motors and pump-sets to draw groundwater will be completely reimbursed by the government.
Select the correct answer using the codes given below
  • Only 1
  • 1 and 2
  • 3 and 4
  • 1, 2, 3 and 4
Which one of the following towns is not situated along the Grand Trunk Road?
  • Allahabad
  • Lucknow
  • Agra
  • Kanpur
Which one of the following is a non-renewable resource?
  • Solar Energy
  • Coal
  • Water
  • Fisheries
What is chiefly found at Jharia in Jharkhand?
  • Thorium
  • Silk
  • Gold
  • Coal
Which one of the following statement is correct ?
Deccan Odyssey is ___________.
  • a book on Chatrapati Shivaji
  • a warship recently acquired by the Indian Navy
  • a recently started air service between Mumbai and Colombo
  • a luxury train which travels through Maharashtra and includes Goa in its journey
After a ban on unscientific coal mining and transportation of coal in this region by the National Green Tribunal, many of those engaged in the activity have been switching to turmeric farming for their livelihood. The region referred above is __________.
  • Jaintia Hills, Megalaya
  • Koriya, Chhattisgarh
  • Angul, Odisha
  • Bardhaman, West Bengal
Consider the following statements.
Most of the coal and the ferrous group of minerals in India occur in the peninsula, south of the Vindhyas.
The peninsular India once formed part of the super-continent which included Australia, Antarctica, Africa and South America.
Which of the statements given above is/are correct?
  • Only 1
  • Only 2
  • Both 1 and 2
  • Neither 1 nor 2
Which of the following ports account for almost $$ 50\% $$ of Indian's iron ore exports?
  • Mangalore
  • Marmagao
  • Mumbai
  • Paradeep
Which of the following countries has world's $$25\%$$ Thorium reserves (maximum)?
  • China
  • Pakistan
  • India
  • Iran
With reference to a freshwater lake, consider the following characteristics.
Richness in nutrients.
Rapid turnover of phytoplankton.
Depletion of dissolved oxygen.
Which of the above is/are observed in a lake after its eutrophication?
  • Only 1
  • 1 and 2
  • Only 3
  • 1, 2 and 3
Mudumalai Sanctuary is famous for __________.
  • tigers
  • bisons
  • elephants
  • birds
The National highways system is the responsibility of ___________.
  • State Governments
  • Central Government
  • A special roads authority
  • State and Central Governments
Which one of the following terms describes not only the physical space occupied by organism, but also its functional role in the community of organisms?
  • Ecotone
  • Ecological niche
  • Habitat
  • Home range
Which one of the following is a pipeline?
1 . Salaya - Koyali 
2 . Jamnagar - Loni 
3 . Hajara - Bijapur 
4 . Delhi - Mumbai 
  • 1 , 2 and 3
  • 2 and 3
  • 1 , 2 , 3 and 4
  • None of these
Transfer of energy from one organism to another in an ecosystem takes place in a __________.
  • linear manner
  • hierarchical manner
  • discrete manner
  • cyclic manner
Which of the following two criteria has/have to be met in order to qualify as a 'biodiversity hotspot' on the world hotspots map?
The region must contain at least 0.5% or 1500 species of vascular plants as endemic species.
The region has to have lost at least 70% of its primary vegetation.
Select the correct answer using the codes given below.
  • Only 1
  • Only 2
  • Both 1 and 2
  • Neither 1 nor 2
A succession taking place in an area where there had been no vegetation earlier is called a _________ succession.
  • pioneer
  • primary
  • secondary
  • fresh
The term biotype means ____________.
  • all individuals having same phenotype
  • all individuals having same genotype
  • all individuals having different phenotype
  • all individuals having different genotype
Which of the following rail zones has a maximum route kilometers?
  • Northern
  • Southern
  • Central
  • Western
The succession may begin in an area where some natural disaster has caused removal of existing vegetation. Such a succession is called ___________.
  • primary
  • secondary
  • allogenic
  • autogenic
Eastern dedicated freight corridor extends from _____________.
  • Dankuni to Ludhiana
  • Kolkata to Bhubaneshwar
  • Cuttack to Hyderabad
  • Patna to Chennai
Which one of the following statements is correct ?
  • The first Meeting of the Parties (MOP) to the Cartagena Protocol on Biosafety was held in Philippines in the year 2004.
  • India is not a signatory to the biosafety Protocol /Convention on biological diversity.
  • The Biosafety Protocol deals with genetically modified organisms.
  • The United State of America is member of the Biosafety Protocol /Convention on Biological diversity.
In India , in which one of the following types of forests is teak a dominant tree species?
  • Tropical moist deciduous forest
  • Tropical rain forest
  • Tropical thorn scrub forest
  • Temperate forest with grasslands
Following are the characteristics of an area in India.
Hot and humid climate.
Annual rainfall 200 cm.
Hill slopes upto an altitude of 1100 metres.
Annual rage of temperature $$15^0 C$$ to $$30^0 C$$.
Which one among the following crops are you most likely to find in the area described above?
  • Mustard
  • Cotton
  • Pepper
  • Virginia Tobacco
Arable land in the irrigated zones of the India is turning saline due to which of the following reasons?
  • Addition of gypsum
  • Over irrigation
  • Over grazing
  • Use of fertilisers
Consider the following statements about Indian forestry 
1) About $$40\%$$ of the Indian forests are in the inaccessible mountainous regions which impede the speedy transfer of felled trees.
2) Although according to India's forest policy , a high proportion of the land area shall be covered by forest except in some states , the percentage of forest cover is extremely low.
3) Exploitation of forests is less time consuming and less costly , as almost in every forest a single type of tree dominates.
4) The annual productivity of the forests is 3.5 cubic metres per hectare.
Which of the statements given above are correct ?
  • 1 and 2
  • 1 , 2 and 3
  • 3 and 4
  • 1 , 2 , 3 and 4
Recently the first Double-Decker Train was flagged off from ____________.
  • Howrah to Dhanbad
  • Howrah to Delhi
  • Patna to Dhanbad
  • Patna to Delhi
Which of the following areas has tea plantation?
  • Lower sides of Nilgiri
  • Sub-Himalayan region of West Bengal
  • Cardamom hills in Western Ghats
  • All of the above
Which of the following trees are mainly found in Western Ghats and Satpura range of Madhya Pradesh ?
  • Sandalwood
  • Pine
  • Sal
  • Teak
When the succession starts under conditions highly unfavourable to plant growth and plants themselves, they have to create a suitable physical environment for themselves, it is _____________.
  • a primary succession
  • an autogenic succession
  • a pioneer succession
  • an allogenic succession
Which of the following pairs is not correctly matched?
List I ( Railway Zone ) : List II ( Headquarters)
  • North Eastern Railway : Gorakhpur
  • South Eastern Railway : Bhubaneshwar
  • Eastern Railway : Kolkata
  • South - East Central Railway : Bilaspur
The functioning of an ecosystem involves _____________.
  • flow of energy and circulation of nutrients.
  • an increasing simplicity of relations.
  • increasing animal populations.
  • increasing number of trees, bushes etc.
An ecosystem is a/an ____________.
  • undisturbed natural area.
  • system of organisms and their environment.
  • area rich in wildlife having no humans.
  • very large area of uniform environment conditions.
With reference to food chains in ecosystems, consider the following statements.
A food chain illustrates the order in which a chain of organisms feed upon each other.
Food chains are found within the population of a species.
A food chain illustrates the numbers of each organism, which are eaten by others.
Which of the statements given above is/are correct?
  • Only 1
  • 1 and 2
  • 1, 2 and 3
  • None of the above
Consider the following statements.
1) Silent Valley National Park is in the Nallamalai.
2) Pathrakkadavu Hydroelectric Project is proposed to be built near the Silent valley National Park.
3) The Kunthi river originates in Silent Valley's rainforests.
Which of the statements given above is / are correct ?
  • 1 and 3
  • Only 2
  • 2 and 3
  • 1 , 2 and 3
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