MCQ Name the CFC that is used in refrigerators. Advertisement Remove all ads. … A. Class 11 Chemistry Chapter 7 MCQ With Answers Question 12. (d) Natural calamities. Explanation: Ozone layer is getting depleted at the higher levels of the atmosphere due to effect of chlorofluorocarbons (CFCs) which are used as refrigerants and in fire extinguishers. We have provided Pollution of Air and Water Class 8 Science MCQs Questions with Answers to help students understand the concept … CFC has disrupted this balance and increase the degradation of Ozone gas which is called Ozone depletion. Answer: (A) Both A and R are true and R is the correct explanation of A. Chlorofluorocarbons (CFCs): Notes for UPSC Chlorofluorocarbons (CFC) are gases used for various purposes including solvents, refrigerants and aerosol sprays. They are organic chemicals and contain carbon, (sometimes hydrogen,) chlorine, and fluorine. Refrigeration & Air-Conditioning MCQ Question with Answer ... 23 » Question No : 146 Environmental protection agencies advice against the use of chlorofluorocarbon refrigerants since . ANSWER: aerosol sprays foams. c. incomplete burning of wood. Many CFCs have … WBCS previous years mcq on general science (Chemistry). B. CO, CO2 and NO2 at low temperature. CFCs and later HCFCs were being used for everything that HFCs are used now for, but it was found that these were depleting the ozone layer, which protects life on earth from .. MCQs: The air condition equipment, leaking refrigerators, spray cans and burning of plastic foams release - (A) carob-oxides - (B) herbicides. Environmental protection agencies advice against the use ... B These react with plants and cause greenhouse effect . viewed_cookie_policy: 11 months: The cookie is set by the GDPR Cookie Consent plugin and is used to store whether or not user has consented to the use of cookies. Show Answer. Chlorofluorocarbons used in refrigerators, air conditioners and aerosol sprays are responsible to deplete the ozone layer in the atmosphere. 10. The cookie is used to store the user consent for the cookies in the category "Performance". Chapter 3: Interior of the Earth Class 11 MCQ Questions. 1. MCQ Environmental protection agencies advice against the use of chlorofluorocarbon refrigerants since. Carbon dioxide B. Methane C. Ammonia D. Freon These are used as coolants in refrigerators, coolers, etc. Assertion and Reason - Verbal Reasoning Questions and ... d) Heavy metal accumulation in freshwater bodies. Depletion of ozone layer : Ozone layer gets depleted due ... If you have any questions about NCERT MCQ Questions for Class 11 Geography Chapter 12 World Climate and Climate Change with Answers Pdf free download, please share them in the comment box below and we will get back … Catalytic converters are used in internal combustion engines fueled by either petrol (gasoline) or diesel—including lean burn engines. First is the Physical and Chemical Principles, 30%. MCQs Chlorofluorocarbon done clear. Chlorofluorocarbon is halogenated paraffin hydrocarbon. A 22 to 111 years. CFCs are very stable in the troposphere. MCQ Advertisement Remove all ads. ... Atmospheric ozone layer which protect us from UV-B and C is getting depleted most by addition of … A catalytic converter is a vehicle emissions control device that converts toxic pollutants in exhaust gas to less toxic pollutants by catalyzing a redox reaction (oxidation or reduction). MCQ Questions for Class 8 Science Chapter 18 Pollution of (d) Natural calamities. Carbon dioxide Nitrogen Hydrogen Oxygen 134. A. a worldwide reduction in chlorofluorocarbon use. a. chlorofluorocarbons MCQ Solving Pollution of Air and Water Multiple Choice Questions of Class 8 Science Chapter 18 MCQ can be of great help to students as they will be aware of all the concepts. » All the services offered by McqMate are absolutely free. The MCQ Questions for Class 8 Science with answers have been prepared as per the latest syllabus, NCERT books and examination pattern suggested in Standard 8 by CBSE, NCERT and KVS. b) nutrient depletion of freshwater bodies. Bismil Hameed (391) Basit Ali (372) Salique Hussain (134) ALiMallaH (94) Shuaib Uddin (64) CFCs and HCFCs also warm the lower atmosphere of the earth, changing global climate. 1992 C. 1987 D. 1982 MCQ 9: Number of atoms in ozone molecules are A. The first anesthesia used was _____ a) polyvinyl chloride b) trichloro methane c) chlorofluorocarbon d) tetra fluorocarbon. They are organic chemicals and contain carbon, (sometimes hydrogen,) chlorine, and fluorine. MCQs They are used in the manufacture of aerosol sprays, blowing agents for foams and packing materials, as solvents, and as refrigerants. It is used in refrigerators, aerosol applications and solvents. Reason (R) : When plaster of Paris is mixed with water and applied around the fractured limbs, it sets in to a hard mass. d. All. Students can refer […] CFC is Chloro fluoro carbon. It does not store any personal data. III. Bismil Hameed (392) … The 1990 Montreal Protocol called for the phasing out of CFCs in refrigeration, insulation and fire fighting equipment. MCQ 7: Wavelength of infrared radiations is A. zero B. finite C. shorter D. longer MCQ 8: Montreal protocol to reduce the production of chlorofluorocarbons was assigned in A. b) These react with plants and cause greenhouse effect. Environmental Chemistry Class 11 MCQ Questions with Answers. (A) Sulphur Dioxide (B) Chlorofluorocarbon (C) Smoke (D) Cng - Chemistry. Natural Resources is important Chapter for class 9 students appearing for CBSE board exam as well as NEET Aspirants also. Check the below NCERT MCQ Questions for Class 8 Science Chapter 18 Pollution of Air and Water with Answers Pdf free download. CBSE Class 8 Science Pollution of Air and Water MCQs with answers available in Pdf for free download. Multiple Choice Questions on Environmental Pollution Environmental pollution is an environmental problem which occurs due to the release of pollutants without proper management. C. CO, O2 and peroxy acetyl nitrate in the presence of Sunlight. Select the process that does not add particulate materials to air. View Answer & Solution. d. Nitrogen peroxide. CH 3 COOCH 3 CH. The ozone layer depletion is found in _______. A catalytic converter is a vehicle emissions control device that converts toxic pollutants in exhaust gas to less toxic pollutants by catalyzing a redox reaction (oxidation or reduction). Chimneys. Answer: d. Clarification: The destruction of the ozone layer causes harm to positive vegetation and to plankton and accordingly affecting nature’s food chains and food webs. B 30 to 50 years. d. none of above. done clear. Name various techniques used for purification of water. a. in presence of witnesses the donor authorizes removal of organs on his death . Both A and R are true and R is the correct explanation of A. CH 3 COOCH 2 CH 3. ICSE CBSE in this article have provided you our environment class 10 with top most 30 – 40 Most important MCQs Question with detailed explanation of our environment class 10 pdf.These questions are made by our science expert teacher that has 10 … Which of these is NOT a nature of generally used chlorofluorocarbons? 3 C. 4 D. 1 MCQ 10: Layer which saves the life from harmful effects of UV radiations is known as Question 3. Explanation: The chemical formula of a carboxylic acid is R-COOH. Chlorofluorocarbons or CFCs used to be used in the manufacture of a range of plastic insulants, including polyurethanes, phenolics, polyisocyanurates and extruded polystyrenes. MCQ Questions for Class 8 Science with Answers were prepared based on the latest exam pattern. MCQ HOTS Questions Notes NCERT Solutions Sample Questions Test Answer: Water which looks clean may still have disease-carrying microorganisms and dissolved impurities. MCQ on Water Pollution. Multiple Choice Questions for Environmental Science Set - 2 MCQs for Environmental Science Set - 2 | Practice Objective Questions for Environmental Science Set - 2 . What is the source of chlorofluorocarbons? 2. Chlorofluorocarbons (CFCs), hydrochlorofluorocarbons (HCFCs) and halons destroy the earth's protective ozone layer, which shields the earth from harmful ultraviolet (UV-B) rays generated from the sun. CFCs and HCFCs also warm the lower atmosphere of the earth, changing global climate. Hydrofluorocarbons (HFCs) also act to warm the planet. Anaesthesia Pre and Post Care. Advertisement Remove all ads. With a very minor exception, CFCs have been phased out globally. ... D. chlorofluorocarbon. Question 1. MCQ Questions for Class 8 Science: Ch 18 Pollution of Air and Water 03 Sept, 2020 MCQ Questions for Class 8 Science: Ch 18 Pollution of Air and Water ... Chlorofluorocarbon is used in (a) Refrigerators (b) Air conditioners (c) Aerosol sprays (d) All (d) All. Compressed gases have been used in products such as dental creams, hair preparations, ointments, and aqueous antiseptic and germicidal aerosols and are extremely useful in contact lens cleaner saline solution and barrier systems. Scrubbers need to be used in the smokestacks to reduce the amount of sulphur dioxide emission in air. When do scientists predict the ozone layer will heal and return to pre-1980 levels? D. Nitrogen is used by plants with the help of bacteria. Which of these produces dangerous photochemical smog? MCQ. Understand the concept clearly by consistently practicing the Multiple Choice Questions and score well in your exams. Previous Post Next Post Important Study Materials. Practicing NCERT Geography MCQs With Answers Pdf Class 11 is one of the best ways to prepare for the CBSE Class 11 board exam. MCQs: The Chlorofluorocarbon (CFC) remains in atmosphere for - (A) 22 to 111 years - (B) 30 to 50 years (2) Increased concentration of carbon dioxide and other gases in the atmosphere causes greenhouse effect raising the atmosphere temperature. This is a Most important question of gk exam. Below, You will find a list of Biology MCQ Questions as per the latest prescribed syllabus. (a) Perfumes (b) Refrigerators (c) Air conditioners (d) All of the above. Chemistry MCQ Questions and Answers based on the General Knowledge for interview, preparation of competitive exams and entrance test | page 138 a) nutrient enrichment of freshwater bodies. Which human-made material cannot be broken down by the action of bacteria? c. Chlorofluorocarbons (CFCs) d. Both a. and b. A These react with water vapour and cause acid rain . B. CO, CO2 and NO2 at low temperature. a. Chlorine. C. Nitrogen is used in burning process. CBSE- Pollution of Air and Water-MCQ. Find the incorrect statement (a) BOD value of clean water is less than 5 ppm (b) Drinking water pH should be between 5.5-9.5 Chlorofluorocarbons (CFC) are responsible for ozone layer depletion. (b) Population explosion. D. NO2, O3 and peroxy acetyl nitrate in the presence of Sunlight. It contains a high concentration of ozone (O3) in relation to other parts of the atmosphere, although still small in relation to other gases in the stratosphere. Practice MCQ Questions for Class 8 Science with Answers on a daily basis and score well in exams. (a) Ionosphere. Which one of the following gases plays a decisive role in affecting the climate of the earth? These react with water vapour and cause acid rain. So, it is essential to purify water before drinking. April 27, 2021 by rikazzz. » Each MCQ is open for further discussion on discussion page. Depletion of ozone layer : Ozone layer gets depleted due to the use of chemicals called aerosol, spray propellants like chlorofluorocarbons.Depletion of ozone layer causes skin cancer in men and animals and severe damage to the plants. MCQ Questions for Class 10 Science Chapter 15 Our Environment 1. Today, the world’s number one problem is: (a) Pollution. … All human … b. Answer choices in this exercise appear in a different order each time the page is loaded. This in turn causes an increase in carbon dioxide due to the decrease in vegetation. The MCQ Questions for Class 8 Science with answers have been prepared as per the latest syllabus, NCERT books and examination pattern suggested in Standard 8 by CBSE, NCERT and KVS. C These react with oxygen and cause its depletion . b)false Choloflouro Carbon (CFCs) are non-flammable chemicals and nontoxic, containing atoms of chlorine, fluorine, and carbon. They are used in the manufacture of packing materials, as solvents, and as refrigerants, aerosol sprays, and blowing agents for foams. Question. (c) Nuclear proliferation. Multiple Choice Questions are an important part of exams for Grade 8 Science and if … B. if relative of deceased person has no objection for removal of organs for therapeutic reasons c. the prohibition on removal of organs is authorized only on confirmation of death by certified medical experts d. person with authority believes that a near relative is likely to claim the body of an … These MCQ Questions on Pollution of Air and Water Class 8 with answers pave for a quick revision of the Chapter thereby helping you to enhance subject knowledge. Ozone gas is continuously formed by the action of UV rays on molecular oxygen and also degraded into molecular oxygen in the stratosphere. Class 10 science chapter 4 Carbon and it's compound mcq. Question 6. Chlorofluorocarbons and hydrochlorofluorocarbons are fully or partly halogenated paraffin hydrocarbons that contain only carbon, hydrogen, chlorine, and fluorine, produced as volatile derivatives of methane, ethane, and propane. Ace up your preparation with the Objective Questions available on Water Pollution and enhance your subject knowledge. Chlorofluorocarbons are nontoxic, nonflammable chemicals containing atoms of carbon, chlorine and fluorine. A chlorofluorocarbon. Environmental Issues Multiple Choice Questions. Chlorofluorocarbons (CFCs), hydrochlorofluorocarbons (HCFCs) and halons destroy the earth's protective ozone layer, which shields the earth from harmful ultraviolet (UV-B) rays generated from the sun. Environmental Issues Multiple Choice Questions. wealthy nations to reduce their chlorofluorocarbon use. CFCs on reaching the atmosphere break the ozone molecule resulting in the formation of oxygen radical and O 2 .This oxygen radical results in depletion of the ozone layer that leads to the penetration of the harmful UV radiations from the sun into the … ... Top 5 MCQ Contributors. We hope you found this CBSE Class 11 Geography World Climate and Climate Change MCQs Multiple Choice Questions with Answers helpful. HFCs are used as refrigerants and coolants in refrigerators and air-conditioners, in fire extinguishers, furniture making, as solvents for cleaning, and other purposes. Carbon tetrachloride, chloroform, and hexachloroethane (or tetrachloroethylene plus chlorine) are commonly used starting materials for one- and two-carbon chlorofluorocarbons. (b) 2.66 × 10 -12. Question 2. D. NO2, O3 and peroxy acetyl nitrate in the presence of Sunlight. Reactive Odourless Non-corrosive Non-flammable 132. Categories Air and Water Pollution The water that is stored in layer of porous rocks under the ground is called. c. Sulphur dioxide. 10.CFCs (chlorofluorocarbons) are greenhouse gases that have caused a rise of 3 degree C in the global temperatures in the past century. The examination is divided into three subjects. Eutrophication by sewage pollution refers to the. 131. Concentration of the Ag -4 ions in a saturated solution of Ag 2 C 2 O 4 is 2.2 × (a) 10 -4 mol L -1. Depletion of the ozone layer is caused due to (a) Ferrocene (b) Fullerenes (c) Freons (d) Polyhalogens. 1. The ozone layer or ozone shield is a region of Earth's stratosphere that absorbs most of the Sun's ultraviolet radiation. Free PDF Download of CBSE Science Multiple Choice Questions for Class 8 with Answers Chapter 2 Microorganisms: Friend and Foe. Answer & Explanation. E. A. Release of chlorofluorocarbons leads to the damage of the ozone layer. wealthy, industrialized countries to reduce their green house gas emissions. The cookie is used to store the user consent for the cookies in the category "Performance". CFCs and HCFCs also warm the lower atmosphere of the earth, changing global climate. Presence of chlorine in chlorofluorocarbon chlorofluorocarbonA compound consisting of chlorine, fluorine, and carbon. Answer & Explanation Answer: C) Chlorofluorocarbons Explanation: Chlorofluorocarbons (CFCS) is one of the ozone depleting substances. 2. Revise all the concepts easily by taking help from the MCQ Questions for Class 8 Science with Answers are prepared based on the latest exam pattern. The Chlorofluorocarbon (CFC) remains in atmosphere for. (a) Nitrogen. The main cause of ozone layer depletion is the Chlorofluorocarbons or CFCs. B. Nitrogen is used in fertilizers. » We take free online Practice/Mock test for exam preparation. We have provided Pollution of Air and Water Class 8 Science MCQs Questions with Answers to help students understand the concept very well. Hydrofluorocarbons (HFCs) also act to warm the planet. c) These react with oxygen and cause its depletion. Below we are provided MCQ on Natural Resources class 9 Prepared by subject experts and students can refer these Natural Resources MCQ Questions for their CBSE board exam preparation. Direct exposure to ultraviolet radiations leads to skin and eye cancer in animals. D 10 to 20 years. These MCQ Questions on Pollution of Air and Water Class 8 with answers pave for a quick revision, thereby helping you learn more about this subject. MCQs On Natural Resources With Answers Pdf. Learn the basic of Chemistry through mcq. b. exhaust fumes of motor vehicles. Chlorofluorocarbons are nontoxic, nonflammable chemicals containing atoms of carbon, chlorine and fluorine. The main cause of ozone layer depletion is the Chlorofluorocarbons or CFCs. These anthropogenic chemical compounds are released by aerosols, solvents, refrigerators, spray, air-conditioners, etc. Oil refineries. They are used in the manufacture of aerosol sprays, blowing agents for foams and packing materials, as solvents, and as refrigerants. Explanation : Chlorofluorocarbons (CFCs) are nontoxic, nonflammable chemicals containing atoms of carbon, chlorine, and fluorine. They move to the stratosphere and are broken down by strong ultraviolet (UV) light, where they release chlorine atoms that then deplete the ozone layer. Photo chemical smog is a resultant of the reaction among. Correct Answer: A. Chlorofluorocarbon. Learn through MCQ, Online quiz, mock test, short note, mnemonics, linking, and revision. chemistry mcq,mcq questions for class 10 science chemistry chapter 1,chemistry mcq questions,chemistry mcq with answers pdf, Answer: (a) 2. Categories Air and Water Pollution ... Top 5 MCQ Contributors. MCQ Questions for Class 11 Geography with Answers Fundamentals of Physical Geography. (a) Chlorofluorocarbons (b) Peroxyacetyl nitrate (c) Ozone (d) Acrolein. Chapter 2: The Origin and Evolution of the Earth Class 11 MCQ Questions. Paper factories. 1977 B. Ozone layer protects us from harmful ultraviolet rays of the sun. These MCQ Questions on Pollution of Air and Water Class 8 with answers pave for a quick revision of the Chapter thereby helping you to enhance subject knowledge. Multiple Choice Questions: a Fuel When Used Releases Least Amount of Pollutants in the Air. Related Questions on Chapter 1: Air & Water Pollution - Geography Mcqs for Grade 7. Answer: (c) 3. Solubility product of Ag 2 C 2 O 4 is. a)true. In which the carbon atom is a double bond with an oxygen atom and a single bond with a hydroxide molecule. Reason (R): CFCs are used as refrigerants and in fire extinguishers. Science MCQs for Class 8 Chapter Wise with Answers PDF Download was Prepared Based on Latest Exam Pattern. B cars and motor vehicles. These anthropogenic chemical compounds are released by aerosols, solvents, refrigerators, spray, air-conditioners, etc. Multiple choice questions: 1.The propellant generally is regarded as the heart of the aerosol package. The reason for greehouse effect is increase in quantity of CO 2 in atmosphere. Refer to the Pollution of Air and Water Class 8 MCQs Questions with Answers here along with a detailed explanation. 1) fluorine : … 2. 25. (a) Use of air conditioner (b) Burning of fosssil fuels 1. (d) Carbon fluoro chloro. The most common representative is dichlorodifluoromethane. Chlorofluorocarbon are nonflammable chemicals mainly used in _____. (a) hormone (b) enzymes (c) stomach (d) mouth Answer (b) 2. Chlorofluorocarbons (CFC) are gases used for various purposes including solvents, refrigerants and aerosol sprays. These frequently asked sample questions on are given with correct choice of answer that you can check instantly. Chlorofluorocarbons released into the atmosphere have various ill-effects. Environmental protection agencies advice against the use of chlorofluorocarbon refrigerants since. MCQ in Chemistry Part 7 | Licensure Exam for Chemical Engineering. Lead Benzene Carbon Monoxide Hydrocarbons 133. D all of above. PDF's for offline use. (b) Population explosion. Name the thing in our body which helps us to digest food? (1) Chlorofluorocarbons (CFCs) cause depletion of ozone layer which enable ultraviolet rays of the sun to reach the earth and increase atmospheric temperature. The major cause of global population growth in the 18 and 19 centuries was: High concentration of NO2, O3, and CO in the evening. See below Environmental Chemistry Class 11 Chemistry MCQ Questions, solve the questions and compare your answers with the solutions provided below. Choose the correct option. Chlorofluorocarbon releases a chemical harmful to ozone is_____. Solving the Pollution of Air and Water Multiple Choice Questions of Class 8 Science Chapter 18 MCQ can be of extreme help as you will be aware of all the concepts. Today, the world’s number one problem is: (a) Pollution. C. These react with oxygen and cause its depletion. Burning fossil fuels. C 80 to 90 years. Students can practice the NCERT MCQ Questions for Class 8 Science Chapter 18 Pollution of Air and Water with Answers Pdf free download is available here. Question 9. MCQ Exam ON : International Organizations . Check the below NCERT MCQ Questions for Class 8 Science Chapter 18 Pollution of Air and Water with Answers Pdf free download. d) These react with ozone layer This is the Chemical Engineering Reviewer, Multiple Choice Questions in Chemistry Part 7 as one coverage of Licensure Examinations for Chemical Engineering. The gas depleting ozone layer is CFC. It contributes to the depletion of the ozone layer, the manufacturing of such compounds are restricted under the Montreal protocol. Pollution of water is responsible for. Students can solve NCERT Class 8 Science Microorganisms: Friend and Foe MCQs Pdf with Answers to know their … b. Fluorine. Multiple Choice Questions on Environmental Pollution Environmental pollution is an environmental problem which occurs due to the release of pollutants without proper management. A. Various activities on this planet increase the amount of wastes, which are inherently dangerous to living beings, habitats and ecosystems. High concentration of NO2, O3, and CO in the evening. (c) Nuclear proliferation. CFCs are the main cause of the hole in the ozone layer. C. CO, O2 and peroxy acetyl nitrate in the presence of Sunlight. Some of the heat is trapped by gases such as carbon dioxide, methane, nitrous oxide, ozone, chlorofluorocarbon compounds, and water vapor in the atmosphere. Therefore, it takes the prefix oic acid. Catalytic converters are used in internal combustion engines fueled by either petrol (gasoline) or diesel—including lean burn engines. (a) Settling (b) Flushing (c) Stripping (d) Chlorination. a) These react with water vapour and cause acid rain. CBSE Class 8 Science Pollution of Air and Water MCQs with answers available in Pdf for free download. MCQs: Brilliant light displays occurring in the northern hemisphere due to particles from the sun that enter ionosphere are called Category: Chemistry Mcqs, Published by: T-Code Scripts MCQs: Which layer is located above the stratosphere » We provide you study material i.e. Chlorofluorocarbons (CFCs) are nontoxic, nonflammable chemicals containing atoms of carbon, chlorine, and fluorine. A. Nitrogen constitutes about 78% of air. Between the years 2050 and 2065 b. Practice objective questions and answers on Chemistry. II. Students also can take a free test of the Multiple Choice Questions of Environmental Issues. NULL. Show Answer. C power plants and industries. There is no substitute for consistent practice whether one wants to understand a concept thoroughly or one wants to score better. a. A. (a) human flesh (b) flesh of dead animal (c) … Continue reading MCQ Questions for Class 10 Science … Photo chemical smog is a resultant of the reaction among. They were much used in the middle 20th century, replacing chemicals that were toxic or flammable or had traits that were generally harmful to human health. Assertion (A) : Plaster of Paris is used by doctors by setting fractured bones. 16. This cookie is set by GDPR Cookie Consent plugin. Pollution of Air and Water Class 8 MCQs Questions with Answers. CH 3 COOCH 2. (c) Troposphere. This cookie is set by GDPR Cookie Consent plugin. View Solution play_arrow; question_answer8) Heat is reflected from the earth's surface and trapped in the atmosphere. MCQs: Brilliant light displays occurring in the northern hemisphere due to particles from the sun that enter ionosphere are called Category: Chemistry Mcqs, Published by: T-Code Scripts MCQs: Which layer is located above the stratosphere Chapter 1: Geography as a Discipline Class 11 MCQ Questions. MCQ Questions for Class 8 Science with Answers were prepared based on the latest exam pattern. Find here the NCERT chapter-wise Multiple Choice Questions from Class 12 Biology book Chapter 16 Environmental Issues with Answers Pdf free download. D. … Multiple Choice Questions are an important part of exams for Grade 8 Science and if … ... Use catalytic converters in motor vehicles. Various activities on this planet increase the amount of wastes, which are inherently dangerous to living beings, habitats and ecosystems. It contains only carbon, hydrogen, fluorine and chlorine. MCQs on Anaesthesia Pre and Post Care. They are also commonly known by the DuPont brand name Freon. MCQ , Class 8, Science . c) toxic chemical accumulation in freshwater bodies. Question is : MCQ When chlorofluorocarbons are released in atmosphere, the chlorine chemical destroys the , Options is : 1. helium molecules, 2. beta molecules, 3.ozone molecules, 4. argon molecules, 5. c. Sugar mills. MCQ When chlorofluorocarbons are released in atmosphere, the chlorine chemical destroys the. MCQ The organic compound chlorofluorocarbon contains volatile derivative of ethane, methane and propane which are . viewed_cookie_policy: 11 months: The cookie is set by the GDPR Cookie Consent plugin and is used to store whether or not user has consented to the use of cookies. Which of the following techniques is used to determine the concentration of odour compounds in the given water sample? Answer: nutrient enrichment of freshwater bodies. 15) What is the chemical formula of the ester compound? a. aerosol sprays foams. Here you will find a list of Most important Multiple Choice Questions on Carbon and it's compound with answer for competitive exams like CBSE Class 10 science chapter 4 MCQs . What is the source of chlorofluorocarbons MCQ? The major cause of global population growth in the 18 and 19 centuries was: This may assist you to understand and check your knowledge about the chapters. (b) Lithosphere. B. Have a glance at the MCQ of Chapter 18 Science Class 8 and cross-check your answers during preparation. 2 B. Hydrofluorocarbons (HFCs) also act to warm the planet. Chlorofluorocarbons (CFCs), hydrochlorofluorocarbons (HCFCs) and halons destroy the earth's protective ozone layer, which shields the earth from harmful ultraviolet (UV-B) rays generated from the sun. Hint: About three fourth of the sun’s energy reaching the earth is absorbed by the earth’s surface which leads to an increase in temperature of the surface of the earth. Solving the Pollution of Air and Water Multiple Choice Questions of Class 8 Science Chapter 18 MCQ can be of extreme help as you will be aware of all the concepts. Is regarded as the heart of the Multiple Choice Quiz < /a > MCQ exam on: International.! 7 | Licensure exam for chemical Engineering Nitrogen is used by plants with Objective., it is used to store the user consent for the cookies in atmosphere! Human-Made material can not be broken down by the action of bacteria b. CO, O2 and peroxy acetyl in... Of CO 2 in atmosphere diesel—including lean burn engines O3, and refrigerants... Up your preparation with the Objective Questions available on Water Pollution... Top 5 MCQ Contributors is. Refer to the decrease in vegetation material can not be broken down by the action bacteria. The heart of the aerosol package services offered by McqMate are absolutely free your... Interior of the hole in the evening NO2 at low temperature the solutions provided.. Of answer that you can check instantly 8 Chapter Wise with Answers to help students understand the very! //Www.Gkseries.Com/Mcq-On-Ozone-Depletion/Mcq-On-Ozone-Depletion.Pdf '' > 1 d ) All of the sun one problem is (! ) chlorine, fluorine and chlorine planet increase the amount of wastes, which are molecules., or the reaction among layer depletion is the Physical and chemical Principles, 30 % about 78 % Air. Licensure Examinations for chemical Engineering c. CO, O2 and peroxy acetyl nitrate in the ``! Environmental Issues Books < /a > explanation: the chemical formula of the earth 11!, fluorine, and CO in the presence of Sunlight _____ a Pollution... Formula of a carboxylic acid is R-COOH MCQ the organic compound chlorofluorocarbon contains volatile of! And increase the amount of wastes, which are spray, air-conditioners, etc 5 MCQ Contributors Each the! Is called ozone depletion the Water that is stored in layer of porous rocks under Montreal! Science Chapter 15 Our Environment 1 layer depletion is the correct explanation of a both a and is... It contains only carbon, chlorine and fluorine organic compound chlorofluorocarbon contains volatile derivative of ethane, methane propane... Increased concentration of NO2, O3, and carbon a and R are true and R are true R! Gas emissions ) Increased concentration of NO2, O3 and peroxy acetyl nitrate in the manufacture aerosol. Purify Water before drinking Each time the page is loaded atmosphere of the reaction temperature chlorofluorocarbons < /a > exam... Mcqmate are absolutely free the heart of the earth, changing global climate Origin and Evolution the. Changing global climate are absolutely free and other gases in the manufacture of aerosol sprays blowing... Answers were prepared based on the latest exam pattern the help of bacteria is loaded quantity of 2... > 131 are the main cause of ozone layer depletion is the chemical Engineering Reviewer, Multiple Questions!: Interior of the earth 's surface and trapped in the evening Paris is used to store user... And score well in your exams R is the chlorofluorocarbons or CFCs direct exposure ultraviolet... Pollution - Geography MCQs for Class 10 Science Chapter 15 Our Environment 1 appear a! Latest exam pattern is no substitute for consistent practice whether one wants to score better NEET also., solvents, and as refrigerants students understand the concept very well Environment.... Students also can take a free test of the following gases plays a decisive role in the... Perfumes ( b ) These react with Water vapour and cause its depletion stomach ( d ) tetra.! And score well in your exams Smoke ( d ) tetra fluorocarbon a free test of the ozone will... Also can take a free test of the Multiple Choice Questions: 1.The propellant generally is regarded the... Amount of wastes, which are Geography as a Discipline Class 11 MCQ Questions on are chlorofluorocarbon is used in mcq. Dupont brand name Freon gasoline ) or diesel—including lean burn engines in refrigeration, insulation and fighting... Body which helps us to digest food add particulate materials to Air, refrigerators, coolers, etc Cng Chemistry! And contain carbon, hydrogen, ) chlorine, fluorine and chlorine MCQs... Questions with Answers here along with a detailed explanation hydrofluorocarbons ( HFCs ) also act to warm lower! //Www.Pca.State.Mn.Us/Air/Chlorofluorocarbons-Cfcs-And-Hydrofluorocarbons-Hfcs '' > MCQ Questions, solve the Questions and compare your Answers the! They are also commonly known by the action of UV rays on molecular oxygen and cause greenhouse.. D. 1982 MCQ 9: number of atoms in ozone molecules are a for further discussion on discussion page CBSE! '' > 1 aerosols, solvents, and carbon down by the of... Setting fractured bones b. methane c. Ammonia d. Freon < a href= '' https: //www.gkseries.com/mcq-on-ozone-depletion/mcq-on-ozone-depletion.pdf '' chlorofluorocarbons. Stripping ( d ) All of the Multiple Choice Questions and compare your Answers with Objective! The ozone layer used by doctors by setting fractured bones ace up your preparation the. Ultraviolet radiations leads to skin and eye cancer in animals atmosphere have ill-effects!, ( sometimes hydrogen, ) chlorine, and as refrigerants chlorofluorocarbon ( c ) Smoke ( d mouth. By varying the hydrogen fluoride concentration, the world ’ s number one problem is: ( a Pollution. ) Air conditioners ( d ) tetra fluorocarbon MCQ, Class 8 MCQs Questions with Answers refrigerators. 1992 c. 1987 d. 1982 MCQ 9: number of atoms in ozone molecules a! ) Flushing ( c ) These react with plants and cause greenhouse effect the carbon is... Purify Water before drinking: //mcqs.tasdia.com/mcqs/answer/with-minor-exception-which-of-the-following-have-been-phased-out-completely-globally/22856 '' > 1 can not be down. Under the Montreal protocol Montreal protocol can not be broken down by the of... Nitrogen constitutes about 78 % of Air and Water Class 8 Science MCQs Questions with Answers here along a! Score well in your exams the chapters earth 's surface and trapped in the presence of Sunlight before drinking climate! Chlorofluorocarbons released into the atmosphere temperature been phased out globally d. NO2, and. Solution play_arrow ; question_answer8 ) Heat is reflected from the earth 's surface trapped... To ultraviolet radiations leads to the damage of the earth Class 11 MCQ Questions for 10... Hfcs ) also act to warm the planet the Origin and Evolution of the ester compound of compounds. Internal combustion engines fueled by either petrol ( gasoline ) or diesel—including lean burn engines Chlorination... Asked sample Questions on are given with correct Choice of answer that you can instantly. As the heart of the following is not a nature of generally used chlorofluorocarbons whether. Skin and eye cancer in animals body which helps us to digest food order Each time the is... Minor exception, CFCs have been phased out globally Science with Answers to help students understand concept... Countries to reduce their green house gas emissions following is not the consequence of layer! 11 MCQ Questions, solve the Questions and compare your Answers with Objective! Very well manufacture of aerosol sprays, blowing agents for foams and packing materials, as solvents and. Understand the concept very well thoroughly or one wants to score better propane. As one coverage of Licensure Examinations for chemical Engineering Reviewer, Multiple Questions. 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