<div style='text-align : center'> <Success><font size="5"><b>Environmental Issues</b></font></Success> </div> <h4 id="primaryshort-answer-type-questionsprimary"><Primary>Short Answer Type Questions</Primary></h4> <hr> <div class="text-container"> <p><strong>Ans.</strong> It is our moral duty to protect, restore and conserve/preserve forest as they are highly beneficial for mankind In India, around 30 % of land was covered by forest in early 20th century, which has been reduced to $18-19 \%$ by the year 2000 .</p> <ul> <li>National Forest Commission of India (1988) recommended a relatively large forest cover (67 %) for the hills and $33 \%$ for the plains.</li> </ul> <p><Success>Ans. to be continued</Success></p> </font> </div> <hr> <font size ="4"> <div style='text-align : center'> Multiple choice questions (MCQs) $\rightarrow$ Very short answer type questions $\rightarrow$ <span style="color:blue">Short answer type questions</span> $\rightarrow$ Long answer type questions </div> </font>

<div style='text-align : center'> <Success><font size="5"><b>Environmental Issues</b></font></Success> </div> <h4 id="primaryshort-answer-type-questionsprimary-1"><Primary>Short Answer Type Questions</Primary></h4> <hr> <div class="text-container"> <ul> <li>Recommendation a large forest area for hills is due to its properties like checking soil erosion, percolation and recharging ground water, checking landslide and other natural calamities and to maintain the original flora and fauna of hills.</li> </ul> </font> </div> <hr> <font size ="4"> <div style='text-align : center'> Multiple choice questions (MCQs) $\rightarrow$ Very short answer type questions $\rightarrow$ <span style="color:blue">Short answer type questions</span> $\rightarrow$ Long answer type questions </div> </font>

<div style='text-align : center'> <Success><font size="5"><b>Environmental Issues</b></font></Success> </div> <h4 id="primaryshort-answer-type-questionsprimary-2"><Primary>Short Answer Type Questions</Primary></h4> <hr> <div class="text-container"> <p><strong>Ques.</strong> How can slash and burn agriculture become environment friendly?</p> </font> </div> <hr> <font size ="4"> <div style='text-align : center'> Multiple choice questions (MCQs) $\rightarrow$ Very short answer type questions $\rightarrow$ <span style="color:blue">Short answer type questions</span> $\rightarrow$ Long answer type questions </div> </font>

<div style='text-align : center'> <Success><font size="5"><b>Environmental Issues</b></font></Success> </div> <h4 id="primaryshort-answer-type-questionsprimary-3"><Primary>Short Answer Type Questions</Primary></h4> <hr> <div class="text-container"> <p><strong>Ans.</strong> Slash and burn agriculture can be environment friendly if</p> <p>(i) Small widely scattered plots are used for cultivation as the forest ecosystem will not suffer damage.</p> <p>(ii) Crop rotation is used so that soil does not loose fertility entirely.</p> <p>(iii) Keeping cropping period small and fallow (unplanted) period longer.</p> </font> </div> <hr> <font size ="4"> <div style='text-align : center'> Multiple choice questions (MCQs) $\rightarrow$ Very short answer type questions $\rightarrow$ <span style="color:blue">Short answer type questions</span> $\rightarrow$ Long answer type questions </div> </font>

<div style='text-align : center'> <Success><font size="5"><b>Environmental Issues</b></font></Success> </div> <h4 id="primaryshort-answer-type-questionsprimary-4"><Primary>Short Answer Type Questions</Primary></h4> <hr> <div class="text-container"> <p><strong>Ques.</strong> What is the main idea behind “Joint Forest Management Concept” introduced by the Government of India?</p> </font> </div> <hr> <font size ="4"> <div style='text-align : center'> Multiple choice questions (MCQs) $\rightarrow$ Very short answer type questions $\rightarrow$ <span style="color:blue">Short answer type questions</span> $\rightarrow$ Long answer type questions </div> </font>

<div style='text-align : center'> <Success><font size="5"><b>Environmental Issues</b></font></Success> </div> <h4 id="primaryshort-answer-type-questionsprimary-5"><Primary>Short Answer Type Questions</Primary></h4> <hr> <div class="text-container"> <p><strong>Ans.</strong> The main idea behind joint forest management concept introduced by the Government of India was involving the local communities in the forest conservation.</p> <p><Success>Ans. to be continued</Success></p> </font> </div> <hr> <font size ="4"> <div style='text-align : center'> Multiple choice questions (MCQs) $\rightarrow$ Very short answer type questions $\rightarrow$ <span style="color:blue">Short answer type questions</span> $\rightarrow$ Long answer type questions </div> </font>

<div style='text-align : center'> <Success><font size="5"><b>Environmental Issues</b></font></Success> </div> <h4 id="primaryshort-answer-type-questionsprimary-6"><Primary>Short Answer Type Questions</Primary></h4> <hr> <div class="text-container"> <ul> <li>This concept was adopted considering the extraordinary courage and dedication the local people showed in protecting the wildlife through the movements like Bishnoi’s is movement in Jodhpur and Chipko Movement in Garhwal Himalayas.</li> </ul> </font> </div> <hr> <font size ="4"> <div style='text-align : center'> Multiple choice questions (MCQs) $\rightarrow$ Very short answer type questions $\rightarrow$ <span style="color:blue">Short answer type questions</span> $\rightarrow$ Long answer type questions </div> </font>

<div style='text-align : center'> <Success><font size="5"><b>Environmental Issues</b></font></Success> </div> <h4 id="primaryshort-answer-type-questionsprimary-7"><Primary>Short Answer Type Questions</Primary></h4> <hr> <div class="text-container"> <p><strong>Ques.</strong> What do you understand by Snow-blindness?</p> </font> </div> <hr> <font size ="4"> <div style='text-align : center'> Multiple choice questions (MCQs) $\rightarrow$ Very short answer type questions $\rightarrow$ <span style="color:blue">Short answer type questions</span> $\rightarrow$ Long answer type questions </div> </font>

<div style='text-align : center'> <Success><font size="5"><b>Environmental Issues</b></font></Success> </div> <h4 id="primaryshort-answer-type-questionsprimary-8"><Primary>Short Answer Type Questions</Primary></h4> <hr> <div class="text-container"> <p><strong>Ans.</strong> The inflammation of cornea caused due to the excessive absorption of ultravioet-B radiations is called snow-blindness cataract.</p> </font> </div> <hr> <font size ="4"> <div style='text-align : center'> Multiple choice questions (MCQs) $\rightarrow$ Very short answer type questions $\rightarrow$ <span style="color:blue">Short answer type questions</span> $\rightarrow$ Long answer type questions </div> </font>

<div style='text-align : center'> <Success><font size="5"><b>Environmental Issues</b></font></Success> </div> <h4 id="primaryshort-answer-type-questionsprimary-9"><Primary>Short Answer Type Questions</Primary></h4> <hr> <div class="text-container"> <p><strong>Ques.</strong> How has DDT caused decline in bird population?</p> </font> </div> <hr> <font size ="4"> <div style='text-align : center'> Multiple choice questions (MCQs) $\rightarrow$ Very short answer type questions $\rightarrow$ <span style="color:blue">Short answer type questions</span> $\rightarrow$ Long answer type questions </div> </font>

<div style='text-align : center'> <Success><font size="5"><b>Environmental Issues</b></font></Success> </div> <h4 id="primaryshort-answer-type-questionsprimary-10"><Primary>Short Answer Type Questions</Primary></h4> <hr> <div class="text-container"> <p><strong>Ans.</strong> High concentrations of DDT disturb calcium metabolism in birds, which causes thinning of egg shell and their premature breaking, eventually causing decline in bird populations.</p> </font> </div> <hr> <font size ="4"> <div style='text-align : center'> Multiple choice questions (MCQs) $\rightarrow$ Very short answer type questions $\rightarrow$ <span style="color:blue">Short answer type questions</span> $\rightarrow$ Long answer type questions </div> </font>

<div style='text-align : center'> <Success><font size="5"><b>Environmental Issues</b></font></Success> </div> <h4 id="primaryshort-answer-type-questionsprimary-11"><Primary>Short Answer Type Questions</Primary></h4> <hr> <div class="text-container"> <p><strong>Ques.</strong> Observe the figure A and B given below and answer the following questions</p> <p><Success>Ques. to be continued</Success></p> </font> </div> <hr> <font size ="4"> <div style='text-align : center'> Multiple choice questions (MCQs) $\rightarrow$ Very short answer type questions $\rightarrow$ <span style="color:blue">Short answer type questions</span> $\rightarrow$ Long answer type questions </div> </font>

<div style='text-align : center'> <Success><font size="5"><b>Environmental Issues</b></font></Success> </div> <h4 id="primaryshort-answer-type-questionsprimary-12"><Primary>Short Answer Type Questions</Primary></h4> <hr> <div class="text-container"> <p><img src="https://cdn.mathpix.com/cropped/2024_01_24_136af43fdd62bf9dcffdg-285.jpg?height=296&width=505&top_left_y=1444&top_left_x=392"></p> <p>A</p> <p><Success>Ques. to be continued</Success></p> </font> </div> <hr> <font size ="4"> <div style='text-align : center'> Multiple choice questions (MCQs) $\rightarrow$ Very short answer type questions $\rightarrow$ <span style="color:blue">Short answer type questions</span> $\rightarrow$ Long answer type questions </div> </font>

<div style='text-align : center'> <Success><font size="5"><b>Environmental Issues</b></font></Success> </div> <h4 id="primaryshort-answer-type-questionsprimary-13"><Primary>Short Answer Type Questions</Primary></h4> <hr> <div class="text-container"> <p><img src="https://cdn.mathpix.com/cropped/2024_01_24_136af43fdd62bf9dcffdg-285.jpg?height=366&width=322&top_left_y=1389&top_left_x=967"></p> <p>B</p> <p><Success>Ques. to be continued</Success></p> </font> </div> <hr> <font size ="4"> <div style='text-align : center'> Multiple choice questions (MCQs) $\rightarrow$ Very short answer type questions $\rightarrow$ <span style="color:blue">Short answer type questions</span> $\rightarrow$ Long answer type questions </div> </font>

<div style='text-align : center'> <Success><font size="5"><b>Environmental Issues</b></font></Success> </div> <h4 id="primaryshort-answer-type-questionsprimary-14"><Primary>Short Answer Type Questions</Primary></h4> <hr> <div class="text-container"> <p>(i) The power generation by the above two methods is non-polluting, True/False.</p> <p>(ii) List any two applications of solar energy</p> <p>(iii) What is a photovoltaic cell?</p> </font> </div> <hr> <font size ="4"> <div style='text-align : center'> Multiple choice questions (MCQs) $\rightarrow$ Very short answer type questions $\rightarrow$ <span style="color:blue">Short answer type questions</span> $\rightarrow$ Long answer type questions </div> </font>

<div style='text-align : center'> <Success><font size="5"><b>Environmental Issues</b></font></Success> </div> <h4 id="primaryshort-answer-type-questionsprimary-15"><Primary>Short Answer Type Questions</Primary></h4> <hr> <div class="text-container"> <p><strong>Ans.</strong> (i) Figure A is solar energy panel and figure B is wind mill device.</p> <ul> <li>Both devices produce power without polluting the environment.</li> </ul> <p>(ii) Solar lamp (lantern) (made up of a LED lamp, a photo-voltaic solar panel and rechargeable battery) and solar hot water system (geyser) are the two application of solar energy.</p> <p><Success>Ans. to be continued</Success></p> </font> </div> <hr> <font size ="4"> <div style='text-align : center'> Multiple choice questions (MCQs) $\rightarrow$ Very short answer type questions $\rightarrow$ <span style="color:blue">Short answer type questions</span> $\rightarrow$ Long answer type questions </div> </font>

<div style='text-align : center'> <Success><font size="5"><b>Environmental Issues</b></font></Success> </div> <h4 id="primaryshort-answer-type-questionsprimary-16"><Primary>Short Answer Type Questions</Primary></h4> <hr> <div class="text-container"> <p>(iii) A solar cell is also called as photovoltaic cell.</p> <ul> <li>It is a form of photoelectric cell which converts the light energy into electrical energy by photovoltaic cell.</li> </ul> </font> </div> <hr> <font size ="4"> <div style='text-align : center'> Multiple choice questions (MCQs) $\rightarrow$ Very short answer type questions $\rightarrow$ <span style="color:blue">Short answer type questions</span> $\rightarrow$ Long answer type questions </div> </font>

<div style='text-align : center'> <Success><font size="5"><b>Environmental Issues</b></font></Success> </div> <div> <h4 id="primarylong-answer-type-questionsprimary"><Primary>Long Answer Type Questions</Primary></h4> </div>

<div style='text-align : center'> <Success><font size="5"><b>Environmental Issues</b></font></Success> </div> <h4 id="primarylong-answer-type-questionsprimary-1"><Primary>Long Answer Type Questions</Primary></h4> <hr> <div class="text-container"> <p><strong>Ques.</strong> Write a short note on electronic waste.</p> <ul> <li>List the various sources of e-wastes and the problems associated with its disposal.</li> </ul> </font> </div> <hr> <font size ="4"> <div style='text-align : center'> Multiple choice questions (MCQs) $\rightarrow$ Very short answer type questions $\rightarrow$ Short answer type questions $\rightarrow$ <span style="color:blue">Long answer type questions</span> </div> </font>

<div style='text-align : center'> <Success><font size="5"><b>Environmental Issues</b></font></Success> </div> <h4 id="primarylong-answer-type-questionsprimary-2"><Primary>Long Answer Type Questions</Primary></h4> <hr> <div class="text-container"> <p><strong>Ans.</strong> Solid waste can be biodegradable recyclable non-biodegradable, and can be categoriesed as municipal wastes (se-wage), industrial waste, hospitals and nursing wastes and electronic waste.</p> <ul> <li>Irrepairable computers, mobiles and other electronic goods are often known as ’ $e$ ’ waste or electronic waste.</li> </ul> <p><Success>Ans. to be continued</Success></p> </font> </div> <hr> <font size ="4"> <div style='text-align : center'> Multiple choice questions (MCQs) $\rightarrow$ Very short answer type questions $\rightarrow$ Short answer type questions $\rightarrow$ <span style="color:blue">Long answer type questions</span> </div> </font>

<div style='text-align : center'> <Success><font size="5"><b>Environmental Issues</b></font></Success> </div> <h4 id="primarylong-answer-type-questionsprimary-3"><Primary>Long Answer Type Questions</Primary></h4> <hr> <div class="text-container"> <ul> <li><strong>Source of e-waste</strong> Majority of the developing countries like China, Pakistan and India import irrepairable electronic goods for their valuable metals like copper, nickel and gold.</li> </ul> <p><Success>Ans. to be continued</Success></p> </font> </div> <hr> <font size ="4"> <div style='text-align : center'> Multiple choice questions (MCQs) $\rightarrow$ Very short answer type questions $\rightarrow$ Short answer type questions $\rightarrow$ <span style="color:blue">Long answer type questions</span> </div> </font>

<div style='text-align : center'> <Success><font size="5"><b>Environmental Issues</b></font></Success> </div> <h4 id="primarylong-answer-type-questionsprimary-4"><Primary>Long Answer Type Questions</Primary></h4> <hr> <div class="text-container"> <ul> <li><strong>Disposal of e-waste</strong> Such waste should be burried in landfills or incinerated.</li> <li>In developing countries, metal from e-waste is extracted manually.</li> <li>So, during working with e-waste, one can expose with toxic substances present in it, and may get affected by skin diseases in future.</li> <li>However, recycling is the only solution for the treatment of electronic waste.</li> </ul> </font> </div> <hr> <font size ="4"> <div style='text-align : center'> Multiple choice questions (MCQs) $\rightarrow$ Very short answer type questions $\rightarrow$ Short answer type questions $\rightarrow$ <span style="color:blue">Long answer type questions</span> </div> </font>

<div style='text-align : center'> <Success><font size="5"><b>Environmental Issues</b></font></Success> </div> <h4 id="primarylong-answer-type-questionsprimary-5"><Primary>Long Answer Type Questions</Primary></h4> <hr> <div class="text-container"> <p><strong>Ques.</strong> What is organic farming?</p> <ul> <li>Discuss the benefits of organic farming as a viable practise in the context of developing nations like India.</li> </ul> </font> </div> <hr> <font size ="4"> <div style='text-align : center'> Multiple choice questions (MCQs) $\rightarrow$ Very short answer type questions $\rightarrow$ Short answer type questions $\rightarrow$ <span style="color:blue">Long answer type questions</span> </div> </font>

<div style='text-align : center'> <Success><font size="5"><b>Environmental Issues</b></font></Success> </div> <h4 id="primarylong-answer-type-questionsprimary-6"><Primary>Long Answer Type Questions</Primary></h4> <hr> <div class="text-container"> <p><strong>Ans.</strong> Organic farming system primarily aims at sustainable production in an eco-friendly and pollution free environment.</p> <ul> <li>The land is cultivated by using techniques such as crop rotation, green manure, composting and biological pesticides alongwith beneficial microbes (biofertilisers) instead of chemical fertilisers and pesticides, etc.</li> </ul> <p><Success>Ans. to be continued</Success></p> </font> </div> <hr> <font size ="4"> <div style='text-align : center'> Multiple choice questions (MCQs) $\rightarrow$ Very short answer type questions $\rightarrow$ Short answer type questions $\rightarrow$ <span style="color:blue">Long answer type questions</span> </div> </font>

<div style='text-align : center'> <Success><font size="5"><b>Environmental Issues</b></font></Success> </div> <h4 id="primarylong-answer-type-questionsprimary-7"><Primary>Long Answer Type Questions</Primary></h4> <hr> <div class="text-container"> <ul> <li>Benefits of organic farming are</li> </ul> <p>(i) Maintains long-term soil fertility</p> <p>(ii) Controls pests and diseases without harming the environment.</p> <p><Success>Ans. to be continued</Success></p> </font> </div> <hr> <font size ="4"> <div style='text-align : center'> Multiple choice questions (MCQs) $\rightarrow$ Very short answer type questions $\rightarrow$ Short answer type questions $\rightarrow$ <span style="color:blue">Long answer type questions</span> </div> </font>

<div style='text-align : center'> <Success><font size="5"><b>Environmental Issues</b></font></Success> </div> <h4 id="primarylong-answer-type-questionsprimary-8"><Primary>Long Answer Type Questions</Primary></h4> <hr> <div class="text-container"> <p>(iii) Ensures that water stays clean and safe.</p> <p>(iv) Makes use of resources which the farmer already has, to make it economic.</p> <p>(v) Helps produce nutritious food and high quality crops.</p> <p><Success>Ans. to be continued</Success></p> </font> </div> <hr> <font size ="4"> <div style='text-align : center'> Multiple choice questions (MCQs) $\rightarrow$ Very short answer type questions $\rightarrow$ Short answer type questions $\rightarrow$ <span style="color:blue">Long answer type questions</span> </div> </font>

<div style='text-align : center'> <Success><font size="5"><b>Environmental Issues</b></font></Success> </div> <h4 id="primarylong-answer-type-questionsprimary-9"><Primary>Long Answer Type Questions</Primary></h4> <hr> <div class="text-container"> <font size ="6"> <ul> <li> <p><strong>Organic farming in India</strong></p> </li> <li> <p>Using organic farming techniques makes much more sense for developing nations like India.</p> </li> <li> <p>As we know that modern, intensive agriculture makes the use of expensive chemical fertilisers and herbicides, which leach out from the soil and pollute rivers, lakes and water bodies and also damage the soil fertility in the long run.</p> </li> </ul> </font> </div> <hr> <font size ="4"> <div style='text-align : center'> Multiple choice questions (MCQs) $\rightarrow$ Very short answer type questions $\rightarrow$ Short answer type questions $\rightarrow$ <span style="color:blue">Long answer type questions</span> </div> </font>

<div style='text-align : center'> <Success><font size="5"><b>Environmental Issues</b></font></Success> </div> <h4 id="primarylong-answer-type-questionsprimary-10"><Primary>Long Answer Type Questions</Primary></h4> <hr> <div class="text-container"> <p><strong>Ques.</strong> Water logging and soil salinity are some of the problems that have come in the wake of the Green Revolution.</p> <ul> <li>Discuss their causes and adverse effects to the environment.</li> </ul> </font> </div> <hr> <font size ="4"> <div style='text-align : center'> Multiple choice questions (MCQs) $\rightarrow$ Very short answer type questions $\rightarrow$ Short answer type questions $\rightarrow$ <span style="color:blue">Long answer type questions</span> </div> </font>

<div style='text-align : center'> <Success><font size="5"><b>Environmental Issues</b></font></Success> </div> <h4 id="primarylong-answer-type-questionsprimary-11"><Primary>Long Answer Type Questions</Primary></h4> <hr> <div class="text-container"> <p><strong>Ans.</strong> Water logging and soil salinity is caused by extensive irrigation without proper drainage of water.</p> <ul> <li>Continuous presence of water draws salt to the surface of the soil, which gets deposited as a thin crust on the land surface or start collecting at the roots of the plants.</li> </ul> <p><Success>Ans. to be continued</Success></p> </font> </div> <hr> <font size ="4"> <div style='text-align : center'> Multiple choice questions (MCQs) $\rightarrow$ Very short answer type questions $\rightarrow$ Short answer type questions $\rightarrow$ <span style="color:blue">Long answer type questions</span> </div> </font>

<div style='text-align : center'> <Success><font size="5"><b>Environmental Issues</b></font></Success> </div> <h4 id="primarylong-answer-type-questionsprimary-12"><Primary>Long Answer Type Questions</Primary></h4> <hr> <div class="text-container"> <ul> <li><strong>Adverse effects</strong></li> </ul> <p>(i) Increased salt content stunts the growth of crop plants.</p> <p>(ii) Root cells saturated with saline water gets damaged.</p> <p>(iii) Plants die.</p> <p>(iv) Crop yield gets affected.</p> <p><Success>Ans. to be continued</Success></p> </font> </div> <hr> <font size ="4"> <div style='text-align : center'> Multiple choice questions (MCQs) $\rightarrow$ Very short answer type questions $\rightarrow$ Short answer type questions $\rightarrow$ <span style="color:blue">Long answer type questions</span> </div> </font>

<div style='text-align : center'> <Success><font size="5"><b>Environmental Issues</b></font></Success> </div> <h4 id="primarylong-answer-type-questionsprimary-13"><Primary>Long Answer Type Questions</Primary></h4> <hr> <div class="text-container"> <p>(v) Financial loss to the farmers.</p> <ul> <li>Although properly managing the soil-water system can correct the salination and water logging, but the economic costs of this are very high</li> </ul> </font> </div> <hr> <font size ="4"> <div style='text-align : center'> Multiple choice questions (MCQs) $\rightarrow$ Very short answer type questions $\rightarrow$ Short answer type questions $\rightarrow$ <span style="color:blue">Long answer type questions</span> </div> </font>

<div style='text-align : center'> <Success><font size="5"><b>Environmental Issues</b></font></Success> </div> <h4 id="primarylong-answer-type-questionsprimary-14"><Primary>Long Answer Type Questions</Primary></h4> <hr> <div class="text-container"> <p><strong>Ques.</strong> What are multipurpose trees?</p> <ul> <li>Give the botanical and local names of any two multipurpose trees known to you and list their uses.</li> </ul> </font> </div> <hr> <font size ="4"> <div style='text-align : center'> Multiple choice questions (MCQs) $\rightarrow$ Very short answer type questions $\rightarrow$ Short answer type questions $\rightarrow$ <span style="color:blue">Long answer type questions</span> </div> </font>

<div style='text-align : center'> <Success><font size="5"><b>Environmental Issues</b></font></Success> </div> <h4 id="primarylong-answer-type-questionsprimary-15"><Primary>Long Answer Type Questions</Primary></h4> <hr> <div class="text-container"> <p><strong>Ans.</strong> Multipurpose trees are those tree which on plantation fulfills a number of purpose, like shade, providing, soil improvement, provide wood, fruit and food etc.</p> <ul> <li>In other words, multipurpose trees serve a wide variety of function and services for human needs.</li> </ul> <p><Success>Ans. to be continued</Success></p> </font> </div> <hr> <font size ="4"> <div style='text-align : center'> Multiple choice questions (MCQs) $\rightarrow$ Very short answer type questions $\rightarrow$ Short answer type questions $\rightarrow$ <span style="color:blue">Long answer type questions</span> </div> </font>

<div style='text-align : center'> <Success><font size="5"><b>Environmental Issues</b></font></Success> </div> <h4 id="primarylong-answer-type-questionsprimary-16"><Primary>Long Answer Type Questions</Primary></h4> <hr> <div class="text-container"> <ul> <li>Neem (Azardicta, indica) is known for its medicinal properties.</li> <li>Its fruit, leaves, wood and oil extracted from wood is used in most of the ayurvedic medicines.</li> <li>Its wood is pest resistant due to chemical azardiction.</li> <li>Another most important tree is coconut palm.</li> </ul> <p><Success>Ans. to be continued</Success></p> </font> </div> <hr> <font size ="4"> <div style='text-align : center'> Multiple choice questions (MCQs) $\rightarrow$ Very short answer type questions $\rightarrow$ Short answer type questions $\rightarrow$ <span style="color:blue">Long answer type questions</span> </div> </font>

<div style='text-align : center'> <Success><font size="5"><b>Environmental Issues</b></font></Success> </div> <h4 id="primarylong-answer-type-questionsprimary-17"><Primary>Long Answer Type Questions</Primary></h4> <hr> <div class="text-container"> <ul> <li>Its botanical name is Coccos nucifera and belongs to the family-Palmae, it serves a variety of function.</li> <li>As we get oil, wood and food fibre, from this plant.</li> <li>This plant has fibre, medicinal and commercial importance.</li> </ul> <p><Success>Ans. to be continued</Success></p> </font> </div> <hr> <font size ="4"> <div style='text-align : center'> Multiple choice questions (MCQs) $\rightarrow$ Very short answer type questions $\rightarrow$ Short answer type questions $\rightarrow$ <span style="color:blue">Long answer type questions</span> </div> </font>

<div style='text-align : center'> <Success><font size="5"><b>Environmental Issues</b></font></Success> </div> <h4 id="primarylong-answer-type-questionsprimary-18"><Primary>Long Answer Type Questions</Primary></h4> <hr> <div class="text-container"> <ul> <li>Some other multipurpose trees are Moringa oleifera and Gliricidia sepium, which is widely used for fences in central America and provide fire wood fooder and fix atmospheric $\mathrm{N}_{2}$ While M.oleifera is commonly used for animal forage and shade, its leaves are edible.</li> </ul> </font> </div> <hr> <font size ="4"> <div style='text-align : center'> Multiple choice questions (MCQs) $\rightarrow$ Very short answer type questions $\rightarrow$ Short answer type questions $\rightarrow$ <span style="color:blue">Long answer type questions</span> </div> </font>

<div style='text-align : center'> <Success><font size="5"><b>Environmental Issues</b></font></Success> </div> <h4 id="primarylong-answer-type-questionsprimary-19"><Primary>Long Answer Type Questions</Primary></h4> <hr> <div class="text-container"> <p><strong>Ques.</strong> What are the basic characteristics of a modern landfill site.</p> <ul> <li>List any three and also mention the reasons for their use.</li> </ul> </font> </div> <hr> <font size ="4"> <div style='text-align : center'> Multiple choice questions (MCQs) $\rightarrow$ Very short answer type questions $\rightarrow$ Short answer type questions $\rightarrow$ <span style="color:blue">Long answer type questions</span> </div> </font>

<div style='text-align : center'> <Success><font size="5"><b>Environmental Issues</b></font></Success> </div> <h4 id="primarylong-answer-type-questionsprimary-20"><Primary>Long Answer Type Questions</Primary></h4> <hr> <div class="text-container"> <font size ="6"> <p><strong>Ans.</strong> Characteristics of a modern landfill includes</p> <p>(i) Methods to contain leachate such as lining clay or plastic liners.</p> <p>(ii) Compaction and covering of the waste to prevent it from being blown by wind</p> <p>(iii) Installation of a landfill gas extraction system to extract the gas for use in generation of power.</p> <p><Success>Ans. to be continued</Success></p> </font> </div> <hr> <font size ="4"> <div style='text-align : center'> Multiple choice questions (MCQs) $\rightarrow$ Very short answer type questions $\rightarrow$ Short answer type questions $\rightarrow$ <span style="color:blue">Long answer type questions</span> </div> </font>

<div style='text-align : center'> <Success><font size="5"><b>Environmental Issues</b></font></Success> </div> <h4 id="primarylong-answer-type-questionsprimary-21"><Primary>Long Answer Type Questions</Primary></h4> <hr> <div class="text-container"> <ul> <li>The use of modern landfill sites must be promoted due to the following reasons</li> </ul> <p>(i) They stimulate the waste prevention via recycling and recovery of waste.</p> <p><Success>Ans. to be continued</Success></p> </font> </div> <hr> <font size ="4"> <div style='text-align : center'> Multiple choice questions (MCQs) $\rightarrow$ Very short answer type questions $\rightarrow$ Short answer type questions $\rightarrow$ <span style="color:blue">Long answer type questions</span> </div> </font>

<div style='text-align : center'> <Success><font size="5"><b>Environmental Issues</b></font></Success> </div> <h4 id="primarylong-answer-type-questionsprimary-22"><Primary>Long Answer Type Questions</Primary></h4> <hr> <div class="text-container"> <p>(ii) They create a uniform cost for the disposal of waste which consequntly will prevent the unecessary transport of waste.</p> <p>(iii) They prevent or reduce the negative eftects on the envirionment, as well as the risks to human health arising from the landfilling of the waste.</p> </font> </div> <hr> <font size ="4"> <div style='text-align : center'> Multiple choice questions (MCQs) $\rightarrow$ Very short answer type questions $\rightarrow$ Short answer type questions $\rightarrow$ <span style="color:blue">Long answer type questions</span> </div> </font>

<div style='text-align : center'> <Success><font size="5"><b>Environmental Issues</b></font></Success> </div> <h4 id="primarylong-answer-type-questionsprimary-23"><Primary>Long Answer Type Questions</Primary></h4> <hr> <div class="text-container"> <p><strong>Ques.</strong> How does an electrostatic precipitator work?</p> </font> </div> <hr> <font size ="4"> <div style='text-align : center'> Multiple choice questions (MCQs) $\rightarrow$ Very short answer type questions $\rightarrow$ Short answer type questions $\rightarrow$ <span style="color:blue">Long answer type questions</span> </div> </font>

<div style='text-align : center'> <Success><font size="5"><b>Environmental Issues</b></font></Success> </div> <h4 id="primarylong-answer-type-questionsprimary-24"><Primary>Long Answer Type Questions</Primary></h4> <hr> <div class="text-container"> <font size ="6"> <p><strong>Ans.</strong> Electrostatic precipitator can remove over $99 \%$ particulate matter present in the exhaust from a thermal power plant by the following mechanism</p> <p>(i) It has electrode wires that are maintained at several thousand volts, which produce a corona that releases electrons.</p> <p>(ii) These electrons attach to dust particles giving them a net negative charge.</p> <p><Success>Ans. to be continued</Success></p> </font> </div> <hr> <font size ="4"> <div style='text-align : center'> Multiple choice questions (MCQs) $\rightarrow$ Very short answer type questions $\rightarrow$ Short answer type questions $\rightarrow$ <span style="color:blue">Long answer type questions</span> </div> </font>

<div style='text-align : center'> <Success><font size="5"><b>Environmental Issues</b></font></Success> </div> <h4 id="primarylong-answer-type-questionsprimary-25"><Primary>Long Answer Type Questions</Primary></h4> <hr> <div class="text-container"> <p>(iii) The collecting plates are grounded and attract the charged dust particles.</p> <p>(iv) The velocity of air between the plates is kept low enough to allow the dust to fall.</p> </font> </div> <hr> <font size ="4"> <div style='text-align : center'> Multiple choice questions (MCQs) $\rightarrow$ Very short answer type questions $\rightarrow$ Short answer type questions $\rightarrow$ <span style="color:blue">Long answer type questions</span> </div> </font>

<div style='text-align : center'> <Success><font size="5"><b>Environmental Issues</b></font></Success> </div> <h4 id="primarylong-answer-type-questionsprimary-26"><Primary>Long Answer Type Questions</Primary></h4> <hr> <div class="text-container"> <p><strong>Ques.</strong> Observe figure and answer the following questions.</p> <p><Success>Ques. to be continued</Success></p> </font> </div> <hr> <font size ="4"> <div style='text-align : center'> Multiple choice questions (MCQs) $\rightarrow$ Very short answer type questions $\rightarrow$ Short answer type questions $\rightarrow$ <span style="color:blue">Long answer type questions</span> </div> </font>

<div style='text-align : center'> <Success><font size="5"><b>Environmental Issues</b></font></Success> </div> <h4 id="primarylong-answer-type-questionsprimary-27"><Primary>Long Answer Type Questions</Primary></h4> <hr> <div class="text-container"> <p><img src="https://cdn.mathpix.com/cropped/2024_01_24_136af43fdd62bf9dcffdg-288.jpg?height=1028&width=493&top_left_y=394&top_left_x=598"></p> <p><Success>Ques. to be continued</Success></p> </font> </div> <hr> <font size ="4"> <div style='text-align : center'> Multiple choice questions (MCQs) $\rightarrow$ Very short answer type questions $\rightarrow$ Short answer type questions $\rightarrow$ <span style="color:blue">Long answer type questions</span> </div> </font>

<div style='text-align : center'> <Success><font size="5"><b>Environmental Issues</b></font></Success> </div> <h4 id="primarylong-answer-type-questionsprimary-28"><Primary>Long Answer Type Questions</Primary></h4> <hr> <div class="text-container"> <p>(i) What ecological term is used to describe the DDT accumulation at different trophic levels?</p> <p>(ii) List any one effect of DDT accumulation on birds.</p> <p>(iii) Will DDT accumulation lead to eutrophication?</p> <p>(iv) Does it affect the BOD?</p> <p>(v) Name disease caused by accumulation of any heavy metal.</p> </font> </div> <hr> <font size ="4"> <div style='text-align : center'> Multiple choice questions (MCQs) $\rightarrow$ Very short answer type questions $\rightarrow$ Short answer type questions $\rightarrow$ <span style="color:blue">Long answer type questions</span> </div> </font>

<div style='text-align : center'> <Success><font size="5"><b>Environmental Issues</b></font></Success> </div> <h4 id="primarylong-answer-type-questionsprimary-29"><Primary>Long Answer Type Questions</Primary></h4> <hr> <div class="text-container"> <font size ="6"> <p><strong>Ans.</strong> (i) The ecological term used to describe the DDT accumulation at different trophic levels is called biomagnification.</p> <p>(ii) High concentrations of DDT disturb calcium metabolism in birds, which causes thinning of egg shell and their premature breaking, eventually causing decline in bird populations.</p> <p><Success>Ans. to be continued</Success></p> </font> </div> <hr> <font size ="4"> <div style='text-align : center'> Multiple choice questions (MCQs) $\rightarrow$ Very short answer type questions $\rightarrow$ Short answer type questions $\rightarrow$ <span style="color:blue">Long answer type questions</span> </div> </font>

<div style='text-align : center'> <Success><font size="5"><b>Environmental Issues</b></font></Success> </div> <h4 id="primarylong-answer-type-questionsprimary-30"><Primary>Long Answer Type Questions</Primary></h4> <hr> <div class="text-container"> <p>(iii) Yes, DDT accumulation can lead to eutrophication.</p> <p>(iv) It increases the BOD, resulting in a decrease in dissolved oxygen in the water body.</p> <p><Success>Ans. to be continued</Success></p> </font> </div> <hr> <font size ="4"> <div style='text-align : center'> Multiple choice questions (MCQs) $\rightarrow$ Very short answer type questions $\rightarrow$ Short answer type questions $\rightarrow$ <span style="color:blue">Long answer type questions</span> </div> </font>

<div style='text-align : center'> <Success><font size="5"><b>Environmental Issues</b></font></Success> </div> <h4 id="primarylong-answer-type-questionsprimary-31"><Primary>Long Answer Type Questions</Primary></h4> <hr> <div class="text-container"> <p>(v) Eating fish that has accumulated mercury, a heavy metal, causes a disease called <strong>Minamata</strong>.</p> <ul> <li>It is characterised by diarrhoea, haemolysis, numbness, deafness, mental derangement, meningitis and death.</li> </ul> </font> </div> <hr> <font size ="4"> <div style='text-align : center'> Multiple choice questions (MCQs) $\rightarrow$ Very short answer type questions $\rightarrow$ Short answer type questions $\rightarrow$ <span style="color:blue">Long answer type questions</span> </div> </font>