CBSE Questions for Class 8 General Knowledge Resources Of India And World Quiz 13 - MCQExams.com

With reference to Indian Agriculture, which one of the following statements is correct?
  • About $$90$$% of the area under pulses in India is rainfed
  • The share of pulses in the gross cropped are at the national level has doubled in the last two decades
  • India accounts for about $$15$$% of the total area under rice in the world
  • Rice occupies about $$34$$% of the gross cropped area of India
Which one among the following statements is not true of the Jalmani system?
  • It was a non-market exchange system
  • It was practised in many villages and regions during the pre-colonial period
  • It was introduced under pressure from the colonial regime
  • It was in corporated into wider networks of exchange through which agricultural products and other goods circulated
Consider the following statements
Rural forestry aims to raise the trees on community land and on privately owned land.
Farm forestry encourages individual farmers to plant trees on their own farmland to meet the domestic need of the family.
Which of the statements given above is/are correct?
  • Only 1
  • Only 2
  • Both 1 and 2
  • Neither 1 nor 2
The word 'ecosystem' was coined by _________.
  • Charles Darwin
  • Robert Whittaker
  • Arthur Tansley
  • Ernst Haeckel
The agricultural production in different parts of India is very much affected by varying intensities of floods and droughts. Which one of the following measures would not be sustainable in this respect?
  • Provision for extensive irrigation facilities
  • Change in the crop calendar
  • Avoidance of flood and drought prone areas for agriculture
  • Emphasis on selection of crops best suited to flood and drought conditions
The following feed at all the trophic energy in different trophic levels in an ecosystem is ____________.
  • food chain
  • food web
  • ecological pyramid
  • cycles
In an ecotone, the species which become abundant are called ____________.
  • edge species
  • keystone species
  • endemic species
  • foster species
Out of the total irrigated areas, the highest percentage of tank irrigated area lies in___________.
  • Kerala
  • West Bengal
  • Bihar
  • Tamil Nadu
The shaded portion in the given rough outline map of India represents
728612_cafab1839b8b4ead9688aaa7adc30a42.png
  • Areas affected by drought
  • Areas under sugarcane cultivation
  • Densely urbanised areas
  • Areas under jute cultivation
Which of the following pairs of states and their important crops are correctly matched?
Kerala                 :   Tapioca
Maharashtra        :   Cotton
Paschim Banga   :   Jute
Gujarat                :  Groundnut
Choose the correct answer from the code given below.
  • 1, 2 and 3
  • 1, 2 and 4
  • 1, 3 and 4
  • 2, 3 and 4
The organisms which feed on bodies of the dead organisms are __________.
  • scavengers
  • decomposers
  • carnivores
  • Both 'a' and 'b'
In the given map four shaded areas are marked as 1, 2, 3 andIn which of these areas are coconut cultivated?
728627_eb1b0870879646a28bdcb1e40ee97e17.png
  • 1, 2 and 3
  • 1, 2 and 4
  • 3 and 4
  • All of these
Consider the following statements.
Air borne plants that form symbotic relationships with host plants are called Epiphytes.
Low lying broad leaved plants are called Forbs.
Which of the statements given above is/are true?
  • Only 1
  • Only 2
  • Both 1 and 2
  • None of these
An aquatic plant introduced from America to check pollution turned out to be a troublesome weed in Indian water bodies. The name of this 'invasive alien species' is _________.
  • opuntia
  • aegilops
  • richhornia
  • pistia
With reference to micro-irrigation, which of the following statements is/are correct?
Fertiliser/nutrient loss can be reduced.
It is the only means of irrigation in dry land farming.
In some areas of farming, receding of ground water level can be checked.
Select the correct answer using the codes given below
  • Only 1
  • 2 and 3
  • 1 and 3
  • All of these
Pradhan Mantri Krishi Sinchai Yojna
Provide end-to-end solution in irrigation
Increase agri productivity and production
Focus just on irrigation expansion
Multipurpose project
Select the correct answer using the codes given below
  • 1 and 2
  • 2 and 3
  • 1, 2 and 3
  • None of the above
With reference to the food chains in ecosystems, which of the following kinds of organism is/are known as decomposer organism/organisms?
Virus
2 Fungi
Bacteria
Select the correct answer using the codes given below.
  • Only 1
  • 2 and 3
  • 1 and 3
  • All of these
Mission for Integrated Development of Horticulture (MIDH)
emphasises on production of quality seeds and planting material.
production enhancement through productivity increase.
Creation of infra to reduce post harvest loss.
improved milching
Select the correct answer using the codes given below
  • 1 and 2
  • 2 and 3
  • 1, 2 and 3
  • All of these
In Nitrogen cycle, soil nitrates are transformed into free nitrogen by _________.
  • nitrifying bacteria
  • denitrifying bacteria
  • ammonifying bacteria
  • Both 'a' and 'c'
Consider the following statements with reference to foodchains in ecosystems.
A foodchain illustrates the order in which a chain of organisms feed upon each other.
Foodchains are found within the population of a species.
A foodchain illustrates the numbers of each organisms, which are eaten by others.
Which of the statements given above is/are correct?
  • Only 1
  • 1 and 2
  • All of these
  • None of these
Which of the following crops cycles are correctly matched with their typical regions?
Cotton - Sugarcane - Wheat              :  Western Region
Paddy - Wheat - Madua                     :  Hill Region
Green manure - Wheat - Sugarcane  :  Tarai Region
Groundnut - Arhar                              :  Bundelkhand
Select the correct answer from the codes given below
  • 1 and 3
  • 1, 2 and 3
  • 2, 3 and 4
  • 1, 3 and 4
There is a concern over the increase in harmful algal blooms in the seawaters of India. What could be the causative factors for this phenomenon?
Discharge of nutrients from the estuaries.
Run-off from to land during the monsoon.
Upwelling in the seas.
Select the correct answer from the codes given below.
  • Only 1
  • 1 and 2
  • 2 and 3
  • 1, 2 and 3
Green Revolution 2.0 which has been in news is a_________.
  • More fertiliser use
  • Practice in USA
  • Sustainable agei
  • Extension of Green Revolution 1.0
Consider the following components of the 'Rainbow Revolution', which is a part of the Government's National Agricultural Policy, aimed at achieving a growth rate of $$4$$% per annum in agriculture and allied sectors
Yellow Revolution - Eggs
Golden Revolution - Oil seeds
Round Revolution - Potato
Grey Revolution - Fertilisers
Which of the pairs given above is/are correctly matched?
  • 1 and 2
  • 3 and 4
  • 2, 3 and 4
  • 1, 2 and 4
Study of plant communities in relation to their habitats of a given ecosystem is called as ____________.
  • Synocology
  • Hexicology
  • Ethology
  • Autecology
Consider the following map of India
The areas marked in the map given above account for the production of which one of the following cash crops?
728723_b6a336c8864944a7ad5299347943d210.png
  • Cotton
  • Groundnut
  • Sugarcane
  • Tobacco
Select the correct sequence of food chain in the arctic waters from the following.
  • zooplankton - diatoms - fish - polar bear - seal
  • diatoms - zooplankton - fish - seal - polar bear
  • fish - diatoms - seal - zooplankton - polar bear
  • diatoms - fish - polar bear - seal - zooplankton
Which of the following statements are related to the favourable conditions of the growth of tobacco?
It requires a moderately high temperature.
It cannot be grown $$1000 m$$ above sea level.
It requires a heavy average annual rainfall.
Red soil is suitable for its growing.
Select the correct answer using the codes given below
  • 3 and 4
  • 2 and 4
  • 1 and 4
  • 1 and 3
Which among the following within processes helps in evolution?
Natural selection
Adaptation
Mutation
Reproductive isolation
  • 1, 2 and 3
  • 2, 3 and 4
  • 2 and 3
  • All of these
Consider the following statements.
Rural forestry aims to raise the trees on community land and on privately owned land.
Farm forestry aims to encourages individual farmers to plant trees on their own farmland to meet the domestic need of the family.
Which of the statements given above is/are correct?
  • Only 1
  • Only 2
  • Both 1 and 2
  • Neither 1 nor 2
Consider the following statements and choose the correct statements from them.
  • Irrigation has the highest proportion of the total used in the country
  • Water is a biotic resource
  • The share of groundwater development is highest in Uttarakhand
  • None of the above
Consider the following statements
India is the only country in the world producing all the five known commercial varieties of silk.
India is the largest producer of sugar in the world.
Which of the statements given above is/are correct?
  • Only 1
  • Only 2
  • Both 1 and 2
  • Neither 1 nor 2
Soil health card scheme launched by government is
only for marginal farmers
for all farmers
every year renewal
every 3 year renewal
Select the correct answer using the codes given below
  • Only 1
  • Only 2
  • 2 and 4
  • 2, 4 and 3
The shaded portion in the given rough outline map of India represents
728850_acdc9afee369479b8f31b3522712e49a.png
  • areas affected by draught
  • areas under sugarcane cultivation
  • densely urbanised areas
  • areas under jute cultivation
Which one of the following districts is well known for the cultivation of the coffee?
  • Balasore
  • Chikmangalur
  • Guntur
  • Khurda
Which one among the following is not a reason for practising tank irrigation in the Peninsular India?
  • The undulating relief and hard rocks
  • Little percolation of rain water due to impervious rock structure
  • Most of the rivers of Peninsular India are perennial
  • There are many streams which become torrential during rainy season
The state which has recently overtaken Karnataka for the top rank in the production of bio-fertilisers is __________.
  • Tamil Nadu
  • Gujarat
  • Maharashtra
  • Punjab
Which of the statement is correct?
  • Tea is extensively grown in the Surma Valley
  • Coffee is extensively grown in Danda Karanya
  • Cotton is extensively grown in lower Ganga plain
  • Tobacco is extensively grown in Paschim Banga
Consider the following statements concerned with the bajra cultivation in India.
Bajra occupies about $$11\%$$ of area under food grains.
Rajasthan is the leading producer of bajra in India.
India exports a large quantity of bajra.
Which of the statements given above are correct?
  • 1 and 2
  • 1, 2 and 3
  • 2 and 3
  • 1 and 3
For which one of the following items is Tirupur well-known as a huge exporter to many parts of the worlds?
  • Gems and jewellery
  • Leather goods
  • Knitted garments
  • Handicrafts
With reference to Indian Agriculture, which one of the following statement is correct?
  • About $$90\%$$ of the area under pulses in India is rainfed
  • The share of pulses in the gross cropped at the national level has doubled in the last two decades
  • India accounts for about $$15\%$$ of the total area under rice in the world
  • Rice occupies about $$34\%$$ of the gross cropped area of India
The state which records the highest productivity of fish (per unit area) in India is _________.
  • Kerala
  • Tamil Nadu
  • Odisha
  • West Bengal
Match the following.
List I
(Cement Production Centre)		List II
(State)
A.Sikka1.Karnataka
B.Bhadravati2.Jharkhand
C.Ranchi3.Gujarat
D.Kurnool4.Andhra Pradesh
  • A-3 ,B-1 ,C-2 ,D-4
  • A-3 ,B-2 ,C-1 ,D-4
  • A-4 ,B-1 ,C-2 D-3
  • A-4 ,C-2 ,B-1 ,D-3
Consider the following statements.
Sabai grass is used for paper making.
Tiger grass is used for making mats.
Which of the above given statements is/are true?
  • Only 1
  • Only 2
  • Both 1 and 2
  • None of these
Which of the following industries requires limestone, silica, alumina, gypsum as raw material?
  • Aluminium industry
  • Iron and steel industry
  • Fertilizer industry
  • Cement industry
The belt extending from Amritsar Gurdaspur to Ludhiana is famous for ___________.
  • Silk industry
  • Jute industry
  • Woollen industry
  • Cotton textile industry
Which of the following factors is not favourable for marine salt production? 
  • High temperature
  • High relative humidity
  • High wind velocity
  • Low soil permeability
The Uranium mines being developed by UCIL at Lambapur and Domiasiat are located, respectively, in which of the following states?
  • Jharkhand and Arunachal Pradesh
  • West Bengal and Assam
  • Andhra Pradesh and Meghalaya
  • Maharashtra and Sikkim
In the vicinity of Mumbai, a number of specialised towns have been developed. Match the lists of specialisation with towns and select the correct answer using the codes given below the lists.
List I
(Towns)		List II
(Specialisation)
A.Alibaug 1.Fishing centre
B.Balapur 2.Holiday resort
C.Nhava Sheva3.Petro-chemical complex
D.Ratnagiri 4.Port
  • A-1 ,B-3 ,C-2 ,D-4
  • A-2 ,B-3 ,C-4 ,D-1
  • A-3 ,B-4 ,C-2 ,D-1
  • A-2 ,B-1 ,C-4 ,D-3
Which of the factors has been responsible for concentration of Jute mills in Hoogli basin?
  • Arrival of British merchants
  • Humid climate
  • Cheap labour
  • All of the above
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