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CBSE Questions for Class 8 General Knowledge Resources Of India And World Quiz 16 - MCQExams.com
CBSE
Class 8 General Knowledge
Resources Of India And World
Quiz 16
When lava cools quickly on the Earth's surface, it forms 'X'. 'X' is a very light rock used as body scrubber and to polish floors.
Identify 'X' in the above given paragraph.
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Gneiss
0%
Pumice
0%
Basalt
0%
Shale
Explanation
Pumice is a type of volcanic rock, produced when lava with a very high content of water and gases is discharged from volcano. Pumice is a very light rock which is used as body scrubber and to polish floor.
This nut can be sweet or bitter and its oil is used in cosmetics, aromatherapy and in making marzipan. USA is the top producer of it. Name this nut.
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Pine nut
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Groundnut
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Cashew nut
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Almond
Explanation
Almonds are edible tree nuts. They contain lots of healthy fats, fibre, protein, magnesium and vitamin E which is good for the skin.
The US is the dominant producer of almonds in the world producing 2,002,742 tons annually.
This huge cactus is pleated like an accordion and expands as it soaks up water. Its flower is the state wildflower of Arizona. Identify it.
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Peyote
0%
Prickly pear
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Saguaro
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Mesquite
Explanation
Saguaros are found exclusively in the Sonoran Desert of Arizona in the United States.
They are huge and very slow growing cactus. They are large, tree-like columnar cacti that develop branches (or arms) as they age, although some never grow arms.
A saguaro cactus can live up to 200 years, grow to be 40 to 60 feet tall, and weigh as much as 4,800 pounds if it has taken in a lot of water through its roots when it rains.
Which one of three clothes do you wear during winters?
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0%
0%
0%
None of these
Explanation
During winters, dark coloured clothes are worn as they are good absorbers of heat.
Also woollen garments are suitable for cold climate as wool keeps the body warm and protects it from the cold winds.
Which of the following statements is true about the rainforests?
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An estimated 50 percent of terrestrial biodiversity is found in rainforests.
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Most rainforest trees are covered with epiphytes, attached to trunk and branches of trees and absorb moisture from the surroundings.
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Over 2000 types of plants found in rainforests can be used to help in cancer treatment due to their anti-cancer properties.
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All of these
Explanation
A rainforest is a forest that receives heavy rainfall. The most notable rainforests are in the tropics or subtropics. They have extraordinary biodiversity.
The biggest rainforest is the Amazon rainforest and is considered to be the lungs of Earth due to the amount of oxygen it supplies.
Cerbera odollam, commonly known as the suicide tree, is a species of tree native to India and other parts of Southern Asia. In which state of India, this tree is found?
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Haryana
0%
Sikkim
0%
Karnataka
0%
Kerala
Explanation
Cerbera odollam is an evergreen shrub or tree usually found in Kerala.
The plant is sometimes gathered from the wild for local use as a medicine and source of fibres and oil.
The whole plant, but especially the seeds, is very poisonous.
Many animals such as bats and primates indulge in geophagia, or the ingestion of soil. Which type of soil do these animals prefer?
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Gravel
0%
Sand
0%
Silt
0%
Clay
Explanation
Geophagia is the practice of eating earth or clay.
Many animals across genera are known to eat mineral rich soil. These include animals like parrots, deer, elephants, bats, rabbits, baboons, gorillas and chimpanzees.
It is a major cereal grain grown in the temperate climate. It was one of the first cultivated grains in Eurasia. Celebration, Lacey and Legacy are few of its six-row malting varieties. Identify the crop.
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0%
Maize
0%
Barley
0%
Millet
0%
Rice
Explanation
Barley is a major cereal grain, commonly found in bread, beverages, and various cuisines of every culture. Barley grown for brewers malt is called malting barley, as opposed to feed barley, and is divided into two general types; 2 Row Barley and 6 Row Barley.
The most obvious difference between a head of 2-row barley and a head of 6-row barley is the arrangement of the kernels when the head is viewed down its axis.
Deciduous trees, unlike evergreens, shed their leaves periodically, which then regrow. Which of the following is not a deciduous tree?
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Magnolia
0%
Birch
0%
Spruce
0%
Beech
Explanation
Spruces are evergreen coniferous trees that belongs to the family Pinaceae. There are about 35 species of spruce in the world. They are found in the northern temperate and taiga regions of the earth.
These needled evergreens typically perform best in a site offering full sun, acidic soil and good drainage but don’t grow well in clay soil.
These trees are massive and can grow to
a height of 50-84 m with a circumference of 20-30 ft. The wood was used mainly for shingles and fence posts or even for making matchsticks. The largest of them is called the 'General Sherman' which is located in California. Which trees are we talking about?
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Sequoia
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Cedar
0%
Pine
0%
Maple
Explanation
Giant Sequoia is the world's largest tree in terms of total volume. They grow to an average height of 50-85 m (150-280 ft) and 5-7 m (16-23 ft) in diameter. Sequoia are found at elevations of 1,400–2,150 meters and can live to be 3,000 years old.
Believed to be around 2,500 years old, General Sherman is the mightiest giant sequoia still standing. The volume of its trunk alone makes it the largest non-clonal tree by volume. Sherman can be found in Sequoia National Park in California, where five of the 10 largest trees in the world exist.
Every year thousands of rainforests and peatlands are being destroyed to make way for new palm oil plantation in this region which is destroying homes of tigers. To check forest destruction, Greenpeace had started a movement known as "Protect Paradise. In which region this movement has been started?
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Malaysia
0%
Indonesia
0%
India
0%
Maldives
Explanation
The 'Protect Paradise' campaign is about creating a worldwide movement, bringing together everyone who want forest friendly products and was started in Indonesia.
Indonesia has some of the world's most intact and diverse tropical rainforests, many of global significance. These forests provide a sustainable livelihood and cultural identity to the indigenous peoples of the region.
Indonesia's forests and peatlands also store enormous quantities of carbon, making them critical to the world's efforts to combat climate change.
It is the smallest species of armadillo known. It is the only species of armadillo that has its dorsal shell almost completely separate from its body. This unique animal resides in the dry grasslands and sandy plains of central Argentina. Identify it.
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Pink fairy armadillo
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Skin - banded armadillo
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Screaming hairy armadillo
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Andean fairy armadillo
Explanation
There are 21 species of armadillo. Some are very small, while others are giant. They are not social creatures and spend most of their time sleeping. Armadillos are omnivores. Pink fairy armadillo or 'pichiciego' is the tiniest species of armadillo in the world.
Mangroves are salt-tolerant plants of tropical and sub-tropical intertidal regions of the world. They are highly productive but extremely sensitive and fragile. Which of the following statements are true regarding them?
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The presence of mangrove ecosystem on coastline saves lives and property during natural hazards such as cyclones and storm surges.
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They are breeding, feeding and nursery grounds for many estuarine and marine organisms.
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West Bengal has maximum percentage of mangrove cover in India.
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All of these
Explanation
Mangroves are salt-tolerant plants of tropical and subtropical intertidal regions of the world. The presence of mangrove ecosystems on coastline save lives and property during natural hazards such as cyclones, storm surges and erosion. They are breeding, feeding and nursery grounds for many estuarine and marine organisms. Hence, these areas are used for captive and culture fisheries. West Bengal has maximum percentage of mangrove cover in India. 2155 km squares area is covered with mangroves in West Bengal.
Plantation crops refer to monoculture crops which are cultivated on an extensive scale over a large area. Which of the following is usually grown in plantation farming?
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Coffee
0%
Wheat
0%
Rubber
0%
Both (A) and (C)
Explanation
Plantation agriculture is a form of commercial farming where crops are grown for profit. Large land areas are needed for this type of agriculture. Countries that have plantation agriculture usually experience high annual temperatures and receive high annual rainfall.
Plantation agriculture was introduced by the Europeans in colonies situated in the tropics. Some of the important plantation crops are tea, coffee, cocoa, rubber, cotton, oil palm, sugarcane, bananas and pineapples.
Cultivation of trees, Shrubs and other woody plants is known as __________.
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Alchemy
0%
Hyboriculture.
0%
Arboriculture
0%
Aetiology
Explanation
Arboriculture is the cultivation of trees, shrubs, and other woody plants for shading and decoration. Arboriculture includes propagating, transplanting, pruning, applying fertiliser, spraying to control insects, etc.
The flower given in the picture is of an achlorophyllous plant native to southern Africa. It is parasitic on the roots of members of the Euphorbiaceae family and emits an odour of faeces to attract its natural pollinators; carrion beetles. Identify it.
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Welwitschia mirabilis
0%
Hydnora africana
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Pinguicula gigantea
0%
Helicodiceros muscivorus
Explanation
Hydnora Africana is one of the strangest plants in the world. It is totally parasitic, perennial that is without any chlorophyll or leaves at all. Hydnora Africana is an achlorophyllous plant in the family Hydnoraceae.
This strange looking tree is an icon of Southern Africa's most arid habitats. It is a tall branching species of aloe also known as choje to the indigenous San people. Identify it.
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Kauri tree
0%
Baobab tree
0%
Quiver tree
0%
Halfmens
Explanation
Quiver trees (Aloe dichotoma) also known as kokerboom are species of aloe indigenous to South Africa, specifically in the Northern Cape region and Namibia. The tree is known as Quiver tree because branches and bark of the tree are used by Kalahari San Bushmen to make quivers for their arrows, hence the name.
This shark is rarely seen by humans and was discovered inIt is found in deep tropical water and is believed that it swims with its mouth open. Name the shark.
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Megamouth
0%
Mako
0%
Hammerhead
0%
Blacktip
Explanation
The Megamouth Shark is an extremely rare and unusual species of shark, discovered in 1976, with 36 specimens known to be caught or sighted as of 2006. It lives in the deep scattering layer of the ocean.
As its name suggests, it has a large mouth that can be as wide as 1.3 meters, although it has small teeth compared to the huge size of its mouth.
These sharks are ovoviviparous, i.e. the mother gives birth to live young that have hatched from eggs within her body.
Araku Valley is a hill station in Visakhapatnam district in the state of Andhra Pradesh in India. The area around it has rich biodiversity. It is famous for its plantation of
Report Question
0%
Tea
0%
Tobacco
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Coffee
0%
Rubber.
Explanation
Araku Valley Arabica Coffee has a pleasant acidity with a citrus note of grapefruit and a mild jaggery-like sweetness with light to medium strength.
This variety is produced by the tribals, who follow an organic approach in which they emphasise management practices involving substantial use of organic manures, green manuring and organic pest management practices.
It is grown in the region of Visakhapatnam district in Andhra Pradesh.
Marsupials are the only mammals that incubate and carry their young ones in special pouches. Most marsupials are found in Australia. Which of the following is the only marsupial to be found in North America?
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Wallaby
0%
Opossum
0%
Koala
0%
Wombat
Explanation
The only marsupial found in the United States and Canada is Virginia opossum or common opossum. Whereas, Australia is home to around 250 different species of marsupial. It includes kangaroos, koalas, wombats, wallaby etc.
There are two basic branches of soil science, $$\underline{(i)}$$ is concerned with the influence of soils on living things, particularly plants and $$\underline{(ii)}$$ is focused on the formation, morphology and classification of soils in their natural environment. Select the option which correctly fills the blanks.
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$$\underline{(i)}$$ Pedology $$\underline{(ii)}$$ Edaphology
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$$\underline{(i)}$$ Geology $$\underline{(ii)}$$ Pedology
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$$\underline{(i)}$$ Geology $$\underline{(ii)}$$ Meterology
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$$\underline{(i)}$$ Edaphology $$\underline{(ii)}$$ Pedology
Explanation
Edaphology mainly focuses on how soil influences living things especially plants. It involves the study of how soil affects the way human nature uses the land for growing plants.
Pedology, on the other hand, involves the study of soil classification and soil morphology. It is the study of soils, including their chemical and physical properties as they are in their natural environment.
Recent discovery of method of reducing salination of soil is
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Spreading of husk on the soil
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Extensive use of fertilisers
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Intensive use of fertilisers
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None of the above
Which hydro-electric project produces maximum power energy?
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Bhakra Nangal
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Koyna
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Hirakud
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Salal
The largest inland lake in India is situated in Rajasthan. This lake has been designated as Ramsar site because the wetland is the home of many migrating birds including flamingo. Name the lake.
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Wular lake
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Sambhar Salt lake
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Chilka lake
0%
Devtal lake
Explanation
Sambhar Salt Lake is India’s largest inland salt lake. It is located in Nagaur and Jaipur districts of Rajasthan and is surrounded on all sides by the Aravali hills.
It is an important wintering area for flamingos and other birds that migrate from northern Asia.
Productivity being low, cottage industry produced a lot because
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It employs large number of people
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No power is needed to manufacture most of the products
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Raw material is generally available locally
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It caters mostly to the rural population
What is the most remarkable aspect of Indian industry since independence?
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More employment opportunities
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Increase in production
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Capacity utilisation
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Diversification
Which State is the biggest producer of cashewnuts?
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Tamil Nadu
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Assam
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Kerala
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Punjab
The extinctive type of lions are mostly found in
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Gujarat
0%
Maharashtra
0%
Assam
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Uttar Pradesh
Which of the following crops helps in nitrogen fixation?
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Rice
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Wheat
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Maize
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Beans
Which of the following cows gives maximum milk yield?
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Jersey
0%
Holstein
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Red Sindhi
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Sahiwal
The crop which grows in alluvial soil and needs 150 cm rainfall is
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Wheat
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Rice
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Groundnut
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Sugarcane
It has been found recently that the acidity of the soil increases because of
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Leaching away of bases
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Increased use of ammonia
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Increased use of urea
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Increased use of rock phosphate
A report says - The number of bus accidents is more than that of car accidents, the number of car accidents is less than the number of truck accidents, the number of truck accidents is less than the number of bus accidents. Which of the following conclusions do you draw from this report?
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There are more buses on road
0%
There are more trucks on the road
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Truck drivers are very careless
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None of these
The cutting of forests leads to
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Soil erosion and incontrollable floods
0%
Desilting and denaturation
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Increase of rainfall and humidity
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None of these
Which of the following projects is administered by more than one State?
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Nagarjuna Sagar Project
0%
Kosi Project
0%
Hirakud Project
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Tungbhadra Project
Underground Railways are being built in India at
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0%
Bombay
0%
Calcutta
0%
Hyderabad
0%
Madras
Recently, which of the following States has explored the possibility of constructing an artificial inland port to be connected to sea by a long navigational channel?
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Andhra Pradesh
0%
Chhattisgarh
0%
Karnataka
0%
Rajasthan
Explanation
Announced by the state in July $$2015$$, this will be set up in Jalore which will get water from the Arabian Sea through a canal.
Natural resources are.
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infinite
0%
finite
0%
ready to support many more billions of people
0%
dispensable
Qantas Airways belongs to
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Australia
0%
West Germany
0%
East Germany
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New Zealand
(1) India generally produces more rice than wheat (2) Production of wheat increases marginally around 4 percent (3) India exports more sugar than wheat (4) The cultivable area under sugar is higher than under rice
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Only 1 and 3 are correct
0%
Only 1 and 2 are correct
0%
Only 1 and 4 are correct
0%
Only 2 and 4 are correct
Heavy rainfall affects soil by
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Increasing its acidity
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Increasing its alkalinity
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Reducing its fertility
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None of these
The following factors are important in production.
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water space air
0%
earth wind fire
0%
animal vegetable object
0%
technology time efficiency
Which of these types of industrial conflict is the odd one out?
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sabotage
0%
strike
0%
overtime ban
0%
work to rule (working only one's contracted hours noting more or less)
Farakka agreement between Bangladesh and India implies
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Sharing of river water of Ganges
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Free navigation
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Mutual understanding of border areas
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A peace treaty
In which type of rocks, fossils are more abundantly found ?
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Igneous
0%
Metamorphic
0%
Sedimentary
0%
None of these
According to sociology flow of information a century ago, communication around world depends on written messages delivered by boat, train, horse and wagon are called _________________.
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Global migration
0%
Global communication
0%
Global economy
0%
None of the above
Match the following.
List I
(Peaks)
List II
(Hill Range)
A. Gurushikhar
$$1$$. Anaimalai
B. Dada Beta
$$2$$. Aravali
C. Annaimudi
$$3$$. Nilgiri
D. Dhupgarh
$$4$$. Satpura
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A-$$1$$, B-$$2$$, C-$$3$$, D-$$4$$
0%
A-$$2$$, B-$$3$$, C-$$4$$, D-$$1$$
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A-$$3$$, B-$$4$$, C-$$2$$, D-$$1$$
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A-$$2$$, B-$$3$$, C-$$1$$, D-$$4$$
Explanation
Gurusbikhar(
1722
1722
m
)
)
is the highest peak of the Aravalli Range in Rajasthan.
Doda Beta
(
2637
(2637
m
)
)
in located in the Nilgirin Hills.
Annaimudi
(
2695
(2695
m
)
)
is the highest peak of South India and is located in the Anaimalai Hills.
Dhupgarh(
1350
1350
m
)
)
near Pachmarhi on Mahadeo Hills, a part of Satpura Range is the highest peak of this area.
Which of the following species are rare species?
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Lion, Tailed monkey, Lesser florican
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Strip tiger, Geer lion
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Red panda, Musk deer
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Shekru squirrel
Explanation
Red panda & Musk deer are rare species.
Point out the correct sequence of mountain ranges from north to south.
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Great Himalayan, Middle Himalaya, Outer Himalaya, Trans Himalaya
0%
Trans Himalaya, Great Himalaya, Middle Himalaya, Outer Himalaya
0%
Middle Himalaya, Great Himalaya, Trans Himalaya, Outer Himalaya
0%
Outer Himalaya, Middle Himalaya, Great Himalaya, Trans Himalaya
A person to try preserve wetlands is _________________.
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0%
An example of preservation
0%
An example of reservation
0%
An example of consercation
0%
None of these
Explanation
Conservation is the protection of Natural resources which are found in nature. Like water, soil, minerals, wildlife and forests etc.
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