Environmental Studies MCQ [Free PDF] – Objective Question

 03/03/2023  Leave a comment
Environmental Studies MCQ [Free PDF] - Objective Question

Environmental Studies MCQ [Free PDF] – Objective Question

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केंद्रीय शिक्षक पात्रता परीक्षा (CTET) के शुरू होने में अब कुछ ही दिन शेष रह गए हैं, सभी अभ्यार्थी जो CTET की परीक्षा में शामिल होने जा रहे हैं, वह अपनी तैयारी में जुटे हुए हैं Environmental Studies MCQ [Free PDF] – Objective Question   इस परीक्षा में अच्छे अंक हासिल करने के लिए यह जरूरी है कि आप सभी महत्वपूर्ण टॉपिक के वस्तुनिष्ठ प्रश्नों का अभ्यास करें, तभी आप इस परीक्षा में अच्छे अंक अर्जित कर सकते हैं, इसी के तहत हम आज CTET पेपर-1 के महत्वपूर्ण विषय पर्यावरण अध्ययन (Environmental studies) से संबंधित कुछ महत्वपूर्ण प्रश्न (Environmental Studies MCQs with Answers pdf in Hindi) आपके साथ शेयर कर रहे हैं, परीक्षा से पहले इन्हें अवश्य पढ़ें और अपनी तैयारी की जांच करें-

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 Environmental Studies MCQ [Free PDF] – Objective Question हम हमेशा आपके उज्वल भविष्य की कामना करते है इसलिए PDF EXAM भारत की NO.1 Study Material प्रोवाइडर है| जंहा आपको सभी विषय जैसे Environment, Indian History, General Knowledge, GK & Current Affairs, General Science, General Studies, Indian Polity, Maths, Reasoning, English Grammar, Hindi Grammar, Environment, Agriculture से सम्बंधित Books, Notes, Papers एवं Important Questions PDF उपलब्ध कराते हैं| हम आज आपके लिए Environment study notes in hindi pdf के महत्वपूर्ण नोट्स की PDF एवं Important Questions उपलब्ध करा रहे है Environment Most Important Questions and Answer की डायरेक्ट लिंक हमने यहां उपलब्ध करा दी है! जिसे आप निचे दिए गए डाउनलोड लिंक पर क्लिक करके डाउनलोड कर सकते है! अगर आपको किसी भी तरीके की परेशानी हो तो आप हमे निचे दिए गए कमेंट बॉक्स में टाइप कर सकते है! हम जल्द से जल्द आपकी सहायता करेंगे! हमे आपकी सहायता करने में ख़ुशी होगी!

Environmental Studies MCQ

1) Environmental studies is defined as the branch that deals with the:

  1. Design, study, and discovery of new materials.
  2. The study of humanities, social, biological, and physical sciences.
  3. Incorporate the information and physical sciences.
  4. Approach about the natural world and the impact of humans on its integrity.

Answer: (d) Approach about the natural world and the impact of humans on its integrity.

Explanation: Environmental studies deal with the issues that affect the life of a living organism. It can be various factors that relates to the natural world and the human impact on it.

The other three options are related to material science, general studies, and environmental science.

Q2) Which of the following statement about the Zoological Survey of India (ZSI) is true?

  1. It was established in 1890 at the Royal Botanical Gardens, Calcutta.
  2. It is the first crocodile conservation breeding center in Asia.
  3. It was established in 1916 to do an organized survey of fauna in India.
  4. It was established in 1982 for research in Wildlife Management.
  5. Answer: (c) It was established in 1916 to do an organized survey of fauna in India.

Explanation: Zoological Survey of India was established on July 1, 1916. It was founded to promote the research and survey of the fauna in India. ZSI has millions of specimens till date. The collection of specimens by the ZSI is considered the largest collection in Asia.

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3) Which layer of the atmosphere contains the ozone responsible for the absorption of UV (Ultra-Violet) light?

  1. Stratosphere
  2. Troposphere
  3. Mesosphere
  4. None of these

Answer: (a) Stratosphere

Explanation: The ozone present absorbs UV light in the stratosphere. It is the most important aspect of the atmosphere that makes life possible on Earth.

4) The estimated percentage of the forest land that ideally India should have is:

  1. 50%
  2. 15%
  3. 33%
  4. 44%
  5. Answer: (c) 33%

Explanation: India has a current forest land of about 12%. The ideal forest land area is 33%, while in hills and mountains it is around 45%. It means the estimated forest land in mountains and hills should e two-third. Thus, India needs to increase the forest land to increase the forest cover.

5) Which two countries of the world constitute about 57% of the large dams?

  1. India and China
  2. India and Brazil
  3. China and Brazil
  4. India and Japan
  5. Answer: (a) India and China

Explanation: The dams act as a storage space for floods. It reduces the effect of the flood on millions of people. It is also suggested that around 40% of the irrigated land depends on dams.

6) The essential non-metallic minerals are:

  1. Granite, marble, limestone
  2. Gold, silver, platinum
  3. Iron, aluminum, zinc, copper
  4. Coal, clay, cement, silica
  5. Answer: (d) Coal, clay, cement, silica

Explanation: Non-metallic minerals do not have metals or fuel as their source.

 

7) Integrated Crop Management is defined as a process to:

  1. Use the traditional methods for growing crops.
  2. Using alternatives to inorganic fertilizers and pesticides.
  3. Both (a) and (b)
  4. None of the above
  5. Answer: (c) Both (a) and (b)

Explanation: The usage of traditional growing crop methods lowers the chance of complete failure of the crops. The research and studies have also shown that using alternatives to inorganic fertilizers and pesticides can also reduce crop failure chances. It is defined as Integrated Crop Management.

8) Which three edible plant species constitute about 60% supply of the world’s food energy intake?

  1. Wheat, Barley, Oat
  2. Wheat, Rice, Maize
  3. Wheat, Barley, maize
  4. None of these
  5. Answer: (b) Wheat, Rice, Maize

Explanation: The three essential edible species that constitute about 60% of the world’s food energy intake are wheat, rice, and maize. The large producers of these three edible species in India are Uttar Pradesh, West Bengal, and Madhya Pradesh.

9) Which of the following is not a measure of sustainable water management?

  1. Preventing leakage from dams and canals
  2. Reducing the rate of surface run-off water.
  3. Preventing loss in the municipal pipes.
  4. Building small reservoirs in place of a few mega projects.

Answer: (b) reducing the rate of surface run-off water.

Explanation: The reduction of the surface run-off water rate is the function of the forest. The role of sustainable water management is to organize campaigns to increase awareness of water scarcity.

10) Which element is considered the largest source of world’s commercial energy consumption?

  1. Coal
  2. Oil
  3. Natural gas
  4. Nuclear
  5. Answer: (b) Oil

Explanation: Coal was the largest energy source round the 19th century. But, today, oil is considered the largest source of commercial energy consumption. It constitutes around 39%. Coal has a percentage of energy consumption around 24%.

11) What are the two forms of alcohol are included in biofuels?

  1. Ethanol and methanol
  2. Ethanol and propanol
  3. Methanol and propanol
  4. None of the above
  5. Answer: (a) Ethanol and methanol

Explanation: Biofuels or liquid fuels use two forms of alcohol namely ethanol and methanol.

 

12) What is the world’s largest potential source of biomass energy?

  1. Animal waste
  2. Industrial waste
  3. Fibrous waste of the paper industry
  4. Fibrous waste of the sugar industry
  5. Answer: (d) Fibrous waste of the sugar industry

Explanation: Fibrous waste is a by-product that is obtained after the juice is extracted from the sugar cane. It is also termed as Bagasse.

13) The functional aspects of the ecosystem are:

  1. Energy cycles
  2. Nutrient cycles
  3. Food chains
  4. All of the above
  5. Answer: (d) All of the above

Explanation: The Ecosystem comprises of the living and non-living parts that are linked to each other. The functional aspects of the ecosystem are nutrient cycles, food chains, and energy cycles.

14) Which of the following is also called Detrivores?

  1. Herbivores
  2. Decomposers
  3. Carnivores
  4. None of the above
  5. Answer: (b) Decomposers

Explanation: Decomposers are the group of small animals, such as bacteria, worms, etc. It breaks down the dead organic material into simple smaller substances.

15) What are ‘keystone’ species in an ecosystem?

  1. cies whose elimination can seriously affect the ecosystem.
  2. The species whose elimination can benefit the ecosystem.
  3. The species whose elimination would not affect the ecosystem.
  4. None of the above
  5. Answer: (a) The species whose elimination can seriously affect the ecosystem.

Explanation: Extinction occurs due to various human activities, such as deforestation, draining wetlands, etc. The elimination of some species can harm the ecosystem. Such species are called keystone species.

Hence, the correct answer is an option (a).

16) Which of the following activity is incorrect about the impact of human activities on the ecosystem?

  1. Depletion of ground water
  2. Extinction of species
  3. Decrease of forest area
  4. None of the above
  5. Answer: (d) None of the above

Explanation: The ecosystem is disrupted due to human activities, which results in the depletion of ground water, extinction of species, decreas of forest area, and many more.

Hence, the correct option is answer (d).

17) Which element is a building block of both animals and plant tissues?

  1. Sulfur
  2. Carbon
  3. Nitrogen
  4. None of the above
  5. Answer: (b) Carbon

Explanation: Carbon is a basic building block of both animals and plants tissue. Carbon occurs in the atmosphere in the form of carbon dioxide.

18) Which human activity can decreases the oxygen levels present in the atmosphere?

  1. Deforestation
  2. Animal hunting
  3. Mining
  4. Both (a) and (c)
  5. Answer: (a) Deforestation

Explanation: Deforestation is the activity of removing trees for commercial purposes. The decrease of plants and trees adversely affects oxygen levels. Hence, deforestation reduces the amount of oxygen present in the atmosphere.

19) A large number of interlinked chains in an ecosystem together forms a:

  1. Nitrogen cycle
  2. Carbon cycle
  3. Food web
  4. Food chain
  5. Answer: (c) Food web

Explanation: The interlinked chains in an ecosystem together form a food web, which is a basic part of an ecosystem. If the links are disturbed due to any human activities, it can result in loss of various species of an ecosystem.

20) The type of forests grown in the Himalayan mountain region is called:

  1. Broad-leaved forests
  2. Coniferous forests
  3. Deciduous forests
  4. None of the above
  5. Answer: (b) Coniferous forests

Explanation: Coniferous forests grow in regions where the temperature is low. The leaves of these forests are needle-like with downward sloping branches. It makes the snow easily slip off from the trees.

21) Which one of the following is not direct use of forest products?

  1. Bamboo for baskets
  2. Medicine
  3. Gums and resins
  4. Grass for grazing

Answer: (c) Gums and resins

Explanation: The other three options are the direct use of forest products. Gums and resins are the processes product from the trees. Hence, it is an indirect forest product.

22) Which of the following is a forest service?

  1. Reduces the surface run-off rain water.
  2. Prevents soil erosion.
  3. Regulate the local temperature.
  4. All of the above.
  5. Answer: (d) All of the above

Explanation: Forests control the flow of water, reduces the surface run-off water, prevent the soil erosion, and regulates the local temperature.

Hence, the correct answer is an option (d).

23) Which of the following is not a reason for the forest loss?

  1. Increasing use of wood
  2. Extinction of species
  3. Extensive use of fuel woods
  4. Mining and building dams
  5. Answer: (b) Extinction of species

Explanation: Extinction of species is a result due to increasing human activities. The increased use of wood, fuel woods, mining, and building dams has led to the forests’ rapid shrinking.

 

24) Which insects live and breed in the forest area?

  1. Bees
  2. Moths
  3. Butterflies
  4. All of the above

Answer: (d) All of the above

Explanation: Bees, moths, and butterflies are the insects that live and breed in the forest area. The degradation of the forest area results in the decrease of these insects in abundance.

25) Jowar and Bajra grow in the areas that have:

  1. High moisture
  2. Little moisture
  3. No moisture
  4. None of the above
  5. Answer: (b) Little moisture

Explanation: The areas around the water-courses have less moisture. Hence, Jowar and Bajra are grown in areas that have little moisture.

26) Which of the following activity can lower the water table?

  1. Soil erosion
  2. Growth of human population
  3. Over extraction of groundwater
  4. Over grazing
  5. Answer: (c) Over extraction of groundwater

Explanation: It refers to the excess withdrawal of the ground water with the help of tube-wells. It can lower the water table and can create a dry surrounding. A water table is an area between the soil surface and the rock sediments.

27) Brackish water ecosystems are found in which of the following:

  1. Streams
  2. Wetlands
  3. Coastal shallows

Hide Answer Workspace

Answer: (d) Deltas

Explanation: Brackish water is found in river deltas that are generally covered by the mangrove forests.

28) Which of the following factors leads to Eutrophication?

  1. Excessive use of fertilizers
  2. Increase of plant nutrients
  3. Both (a) and (b)
  4. None of the above
  5. Hide Answer Workspace

Answer: (c) Both (a) and (b)

Explanation: Eutrophication is caused due to various factors, such as excessive use of fertilizers, etc., that cause an increase in nutrients. These nutrients increase the underwater vegetation in aquatic ecosystems. It further leads to the destruction of the habitat beneath it.

29) Which of the following is not a Biogeographic zone of India?

  1. Thar Desert of Rajasthan
  2. The Brahmaputra Plains
  3. South-east zone
  4. North-east zone
  5. Answer: (c) South-east zone

Explanation: South-east zone is not rich in species. Hence, it is not considered as a Biogeographic zone of India. The region known for its plants and animal species is known as the Biogeographic region.

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