{"id":21929,"date":"2024-04-15T06:13:04","date_gmt":"2024-04-15T06:13:04","guid":{"rendered":"https:\/\/exam.pscnotes.com\/mcq\/?p=21929"},"modified":"2024-04-15T06:13:04","modified_gmt":"2024-04-15T06:13:04","slug":"sound-becomes-hazardous-noise-pollution-at-decibels-a-above-120-db-b-above-80-db-c-above-50-db-d-above-30-db","status":"publish","type":"post","link":"https:\/\/exam.pscnotes.com\/mcq\/sound-becomes-hazardous-noise-pollution-at-decibels-a-above-120-db-b-above-80-db-c-above-50-db-d-above-30-db\/","title":{"rendered":"Sound becomes hazardous noise pollution at decibels? A. Above 120 db B. Above 80 db C. Above 50 db D. Above 30 db"},"content":{"rendered":"<p>\r\n    <!-- Check if it's an AMP page -->\r\n            <!-- Non-AMP version -->\r\n        <div class=\"mcq-container\" data-quiz-id=\"quizState_6a9e9b734176d\">\r\n                                            <div class=\"option\" data-option-key=\"option1\" data-is-correct=\"true\">\r\n                    Above 120 db                <\/div>\r\n                                            <div class=\"option\" data-option-key=\"option2\" data-is-correct=\"false\">\r\n                    Above 80 db                <\/div>\r\n                                            <div class=\"option\" data-option-key=\"option3\" data-is-correct=\"false\">\r\n                    Above 50 db                <\/div>\r\n                                            <div class=\"option\" data-option-key=\"option4\" data-is-correct=\"false\">\r\n                    Above 30 db                <\/div>\r\n                            \r\n            <!-- Feedback messages for non-AMP -->\r\n            <div class=\"feedback\" data-feedback=\"wrong\">Answer is Right!<\/div>\r\n            <div class=\"feedback\" data-feedback=\"right\">Answer is Wrong!<\/div>\r\n        <\/div>\r\n\r\n        <script>\r\n        document.addEventListener('DOMContentLoaded', function () {\r\n            var containers = document.querySelectorAll('.mcq-container');\r\n\r\n            containers.forEach(function(container) {\r\n                var options = container.querySelectorAll('.option');\r\n                var feedbackSelect = container.querySelector('[data-feedback=\"select\"]');\r\n                var feedbackWrong = container.querySelector('[data-feedback=\"wrong\"]');\r\n                var feedbackRight = container.querySelector('[data-feedback=\"right\"]');\r\n\r\n                options.forEach(function(option) {\r\n                    option.addEventListener('click', function() {\r\n                        var selectedOption = option.getAttribute('data-option-key');\r\n                        var isCorrect = option.getAttribute('data-is-correct') === 'true';\r\n\r\n                        \/\/ Remove previous selections\r\n                        options.forEach(function(opt) {\r\n                            opt.classList.remove('correct', 'incorrect');\r\n                        });\r\n\r\n                        \/\/ Add the correct\/incorrect class\r\n                        if (isCorrect) {\r\n                            option.classList.add('correct');\r\n                            feedbackRight.hidden = false;\r\n                            feedbackWrong.hidden = true;\r\n                        } else {\r\n                            option.classList.add('incorrect');\r\n                            feedbackRight.hidden = true;\r\n                            feedbackWrong.hidden = false;\r\n                        }\r\n\r\n                        \/\/ Hide select feedback\r\n                        feedbackSelect.hidden = true;\r\n                    });\r\n                });\r\n            });\r\n        });\r\n        <\/script>\r\n    \r\n    <!--more--><\/p>\n<p>The correct answer is: <strong>A. Above 120 db<\/strong><\/p>\n<p>Sound becomes hazardous noise pollution at decibels above 120. This is because sound at this level can cause permanent hearing damage.<\/p>\n<p>Sound is measured in decibels (dB). The human ear can hear sounds between 0 dB and 120 dB. Sounds below 30 dB are generally considered to be quiet, while sounds above 85 dB can cause hearing damage if exposure is prolonged.<\/p>\n<p>Sounds at 120 dB or above are considered to be hazardous noise pollution. This is because they can cause permanent hearing damage even with short-term exposure.<\/p>\n<p>For example, a gunshot can produce sound levels of up to 140 dB. If you are exposed to a sound of this level for just one second, it can cause permanent hearing damage.<\/p>\n<p>It is important to protect your hearing from hazardous noise pollution. If you are exposed to loud noises, wear earplugs or earmuffs to protect your ears. You should also avoid listening to loud music or using power tools for long periods of time.<\/p>\n<p>Here is a brief explanation of each option:<\/p>\n<ul>\n<li><strong>A. Above 120 db<\/strong><\/li>\n<\/ul>\n<p>Sound becomes hazardous noise pollution at decibels above 120. This is because sound at this level can cause permanent hearing damage.<\/p>\n<ul>\n<li><strong>B. Above 80 db<\/strong><\/li>\n<\/ul>\n<p>Sounds above 85 dB can cause hearing damage if exposure is <div class=\"youtube-subscribe-container\">\r\n        <a href=\"https:\/\/www.youtube.com\/channel\/UCNHT8lW-JmLC68rjBfZhdkg?sub_confirmation=1\" target=\"_blank\" class=\"youtube-subscribe-button\">\r\n            <span class=\"youtube-icon\">\r\n                <svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 576 512\">\r\n                    <path d=\"M549.7 124.1c-6.3-23.7-24.8-42.3-48.3-48.6C458.8 64 288 64 288 64S117.2 64 74.6 75.5c-23.5 6.3-42 24.9-48.3 48.6-11.4 42.9-11.4 132.3-11.4 132.3s0 89.4 11.4 132.3c6.3 23.7 24.8 41.5 48.3 47.8C117.2 448 288 448 288 448s170.8 0 213.4-11.5c23.5-6.3 42-24.2 48.3-47.8 11.4-42.9 11.4-132.3 11.4-132.3s0-89.4-11.4-132.3zm-317.5 213.5V175.2l142.7 81.2-142.7 81.2z\"\/>\r\n                <\/svg>\r\n            <\/span>\r\n            Subscribe on YouTube\r\n      <div class=\"telegram-channel-container\">\r\n        <a href=\"https:\/\/t.me\/pscnotes2025\" target=\"_blank\" class=\"telegram-channel-button\">\r\n            <span class=\"telegram-icon\">\r\n                <svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 496 512\">\r\n                    <path fill=\"white\" d=\"M248,8C111,8,0,119,0,256s111,248,248,248s248-111,248-248S385,8,248,8z M362,177L320,367c-3,14-10,18-20,14l-56-41l-27,26 c-3,3-5,5-10,5l4-63L323,196c5-5-1-7-8-3l-98,62l-42-13c-9-3-10-9,2-14l162-63C351,160,365,164,362,177z\"\/>\r\n                <\/svg>\r\n            <\/span>\r\n            Join Our Telegram Channel\r\n        <\/a>\r\n    <\/div>   <\/a>\r\n    <\/div> prolonged. However, they are not considered to be hazardous noise pollution until they reach 120 dB.<\/p>\n<ul>\n<li><strong>C. Above 50 db<\/strong><\/li>\n<\/ul>\n<p>Sounds above 50 dB can be annoying and disruptive, but they are not considered to be hazardous noise pollution.<\/p>\n<ul>\n<li><strong>D. Above 30 db<\/strong><\/li>\n<\/ul>\n<p>Sounds below 30 dB are generally considered to be quiet and do not pose a risk to hearing.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Join Our Telegram Channel Subscribe on YouTube<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[25],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v22.2 (Yoast SEO v23.3) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Sound becomes hazardous noise pollution at decibels? A. Above 120 db B. Above 80 db C. Above 50 db D. 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