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science social science class10 class9 slideshare cbse covid-19 chapter4 geography oxygen chapter5 sanitizer coronavirus 9 class forest global warming water pollution chapter2 solar energy living organisms disease nutrition vaccine masks democratic politics global issue wildlife democracy wind energy animals medicine fever public health electricity previous years questions and answers pollution natural resources petroleum coal vaccination nutrients medical global solidarity corona data covid-19 information who lungs issue third wave second wave pandemic corona ecosystem oswal important history respiration elements virus plants heat food chapter3 economics chemicals dams chapter6 10 class lok sabha storage earth politics rabi temperature vidhan sabha‬‬ kharif lemon air pollution irrigation flame mountain class8 development deforestation conservation aluminium atmosphere climate control flora combustion fauna production national park economy ³óú³¾³Ü²õ nonmetals metals chapter8 atomic mass population compounds learning hydrogen productivity soil chapter13 energy social minerals social distance vitamins staysafestayhome civics proteins sneezing chapter 9 health climate change ppt chapter15 resources flattenthecurve swab lockdown heattransfer acid rain covid quarantine transportation greenhouse effect calorific value spread environment chapter1 class 8 body fuel sources potable water cold pain mask lubricant static friction grease sliding friction fluid friction rolling friction ball bearing shoes wear chapter 12 internal friction external friction increasing friction reducing friction ponds lakes radiation convection conduction 7th modeofheattransfer thermometer sun righttoeducation school education soil weathering physical weathering laboratory chemical weathering biological weathering soil profile soil formation horizon soil composition types of soil sandy clayey loamy percolation soil erosion soil pollution moisture in soil crops friction force of friction relative motion aquatic habitat grasslands terrestrial habitat deserts adaptation habitat excretion growth biotic components class6 surroundings urban state election cuscuta rural political parties vitamin lack autotrophic carrot heterotrophic photosynthesis vitamin b5 vitamin b4 vitamin vitamin k vitamin d vitamin e vitamin c vitamin b vitamin a benefits vitamin freshwater habitat mla exhalation inhalation breathing rate lactic acid human beings anaerobes anaerobic respiration aerobic respiration types of respiration cellular respiration repire respiratory system lungs breathing forest fire oil local election indian constitution electoral politics election commission plantation election pitcher symbiotic rhizobium education and training constitutional design central election breathing underwater breathing in cockroach sneeze breathing in earthworm wheel reduce friction 14 chapter source antibiotics vegetables immune system functions wool thermosetting plastics thermoplastic insulators conductors harvesting seed drill class 7 h2o river toxicity periodicity anomalous isobars isotopes hydrides oxides mendeleev law of octaves dobereiner classification chapter 5 class 10 manure periodic table fertilizers 16 chapter hydro powerplant sewage food resources improvement abnormal fabrics public mental health physical health why do we fall ill silk cotton natural acrylic polyester nylon rayon cloths clothes sprinkler sustainable sustainable development sustainability drip moat non-renewable conventional energy renewable energy smoke cv fossilfuel oil and gas energy carbohydrates fats synthetic fibres plastics orange indicator clinical phenolphthalein indicator china rose turmeric litmus paper salt bases acids chemical change physical change evaporation tyndall effect colloids colloidal suspension ganga river chapter 18 purified eutrophication prevent pollution effects of water pollution effects of air pollution taj mahal pollutants milk of magnesia soil treatment factory wastes ant bite indigestion neutral neutralization vinegar diluted desertification rainfall chapter7 hydrosphere lithosphere wind formation of water importance of water decomposition water cycle carbon cycle nitrogen cycle oxygen cycle management topsoil ozone layer chapter14 concentration solutions heterogeneous homogeneous mixture celsius fahrenheit substance pure matter reforestation migration degree sanctuary biosphere 8class crop noble gases tribal peasants satyagraha rowlatt act anticolonial movement mahatma gandhi nation nationalism in india scorched earth policy hunting shifting cultivation bamboo commercial forestry scientific forestry forestry war samin challenge society and colonialism woodcutters people of bastar forest society and colonialism volcanic activity religion gender religion and cast tanka palar pani mountainous regions rainwater harvesting narmada bachao rivers industrialisation water management water scarcity water resources the salt march lahore congress simon commission muhammad ali jinnah economic depression swaraj party hind swaraj khilafat movement jallianwalla bagh crust population size and distribution literacy rates sex ratio india's population density rokeya hossain sarat chandra books sevasadan chandrakanta devaki nandan khatri srinivas das premchand banabhatta’s kadambari jane austen oliver twist europe in 19th century colonised people the rise of the novel novels history of the novel supreme court plate tectonics physical features of india types of plates boundaries. himalayan mountains himadri himachal shivalik tectonic plates: northern plains the indian desert the island group lakshadweep islands andaman and nicobar islands population density life expectancy mortality rates national population policy wealth adolescent population working age total area national assembly mole concept molecular mass atoms and molecules economic infrastructure ownership unorganized sector organized sector tertiary sector secondary sector primary sector nrega business and economy economic activities employment sectors of the indian economy sri lanka china longitude lattitude subcontinent tropic of cancer hot students save the planet warm planet csp green hydrogen carbon technology co2 green house gases climate chemical ions chemical reaction molar mass 12 g of carbon 1 mole carbon atoms particles atoms wilhelm ostwald mole avogadro number size of india rubber millets wheat rice zaid junk food commercial farming major crops technological reforms cropping seasons bhoodan gramdan agriculture social and religions diversity of india women’s political representation caste inequalities caste inequality equal wages act patriarchal society caste and poltics gender and politics political science standard meridian india and the world indian union local time southern hemisphere northern hemisphere india’s neighbours india: size & location government salvador allende world bank democracy promotion un security council imf india and neighbours colonialism two tales of democracy : personalities alberto bachelet : military coup of 1973 democracy in contemporary world communalism iron bonding metal oxide sodium hydra fusion amoeba asexual reproduction sexual reproduction organisms reproduction reproduce embryo uterus ovary fertilization ohm ampere parallel combination series combination electric circuit social media liquidate stocks top line bottom line dmaic methodology pcp act rising and control pricing strategy logistics perform sku optimization delivery supply supply chain ecommerce sales case study lustrous malleability ductility reactions resistivity sound spoon as mirror irregular surface regular surface torches erect image prism class7 colours rainbow virtual image real image lens convex concave refraction reflection mirror light sputnik symptoms ohm's law resistance voltage current chapter12 horn firecrackers noise and music inaudible sounds audible sounds propagation of sound vocal cords larynx voice box vacuum medium pitch pitchness loudness noise pollution vibration retinol tropical forests protect environment biology india babool medicinal plants mangrove forests flora and fauna natural vegetation wildlfe natural vegetation and wildlife right to seek redressal defective products consumer protection jago grahak jago justice rti consumer exploitation national consumer day food safety right to choose indira gandhi jawaharlal nehru rajya sabha legislative assembly. two houses of parliament working of institutions parliament political executive prime minister ministers president judiciary non metallic minerals rock minerals mineral and energy resources ferrous minerals copper non ferrous minerals significance of minerals natural gas energy resources consumer right freelancing ecology birds normal species tiger reserve community project tiger rare species vulnerable species endangered species vanishing forests biodiversity spontaneous combustion explosive combustion rapid combustion slow combustion nitrogen dioxide sulphur dioxide carbon dioxide fuel efficiency ignition temperature consumer movement copra consumer rights consumer huge money money fiverr upwork powerpoint presentations graphic design online advertising earn money drop shipping online selling online shopping online business make money online online marketing tutor blogging social media marketing