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নিচের কোনটি থেকে CFC নির্গত হয় না?

নিচের কোনটি থেকে CFC নির্গত হয় না? Correct Answer কাগজের মিল

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What was the major decision that took place in the 1987 Montreal Conference? A. Developed countries will completely ban CFC production by 2000 B. Developed countries will completely ban CFC production by 2010 C. Developing countries will completely ban CFC production by 2000 D. Developing countries will completely ban CFC production by 2020
The following table shows CFC emissions (in million metric tons) from various sectors for an industry for a period of 5 years. Based on the table answer the question given below. Sector Year Cement Fertiliser Foam Pesticides 2015 200 500 80 100 2016 300 600 90 110 2017 320 650 100 120 2018 400 700 150 150 2019 450 800 200 180 What is the approximate contribution in percentage in CFC emissions from the cement sector, in comparison to that of the total CFC emissions from all the sectors in 2017?
The following table shows CFC emissions (in million metric tons) from various sectors for an industry for a period of 5 years. Based on the table answer the question given below. Sector Year Cement Fertilizer Foam Pesticides 2015 200 500 80 100 2016 300 600 90 110 2017 320 650 100 120 2018 400 700 150 150 2019 450 800 200 180 The contribution of CFC emission from the fertilizer sector, in comparison to the total CFC emissions from all the sectors, was the least in which year?
নিম্নের কোন উক্তি বা উক্তিসমূহ সঠিক? i) চামড়া শিল্প থেকে Cr6+ বর্জ্য নির্গত হয় ii) ইউরিয়া সার শিল্প থেকে Hg2+ নির্গত হয় iii) ব্যাটারী তৈরির কারখানা থে Pb2+ নির্গত হয়
CFC নির্গত হয় কোথা থেকে?
মুক্তিযুদ্ধের ৯ নাং সেক্টরের এলাকাসমূহ -
CFC (chloro fluoro carbon) is very highly reactive in causing depletion of ozone layer in the atmosphere. Each atom of chlorine liberated from CFC is capable of decomposing __________ molecules of ozones.
The following table shows CFC emissions (in million metric tons) from various sectors for an industry for a period of 5 years. Based on the table answer the question given below. Sector Year Cement Fertiliser Foam Pesticides 2015 200 500 80 100 2016 300 600 90 110 2017 320 650 100 120 2018 400 700 150 150 2019 450 800 200 180 What is the percentage growth in CFC emissions from the pesticides sector from 2015 to 2019?
The following table shows CFC emission (in million metric tons) form various sectors for an industry for a period of 5 years. Based on the table answer the question given below. Sector Year Cement Fertiliser Foam Pesticides 2015 200 500 80 100 2016 300 600 90 110 2017 320 650 100 120 2018 400 700 150 150 2019 450 800 200 180 Which sector has recorded the maximum percentage growth in CFC emission from 2015 to 2019?
একটি ধাতব তলে λ তরঙ্গদৈর্ঘ্যের একবর্ণী আলোকরশ্মি আপতিত হলে ফটো-ইলেক্ট্রন নির্গত হয় এবং এক্ষেত্রে বিভবের মান 3Vo একই তলে যখন 2λতরঙ্গদৈর্ঘ্যের একবর্ণী আলো আপতিত হয়, তখন নিবৃত্তি বিভবের মান Vol ফটো-ইলেক্ট্রন নির্গত হওয়ার জন্য ঐ তলটির সূচন তরঙ্গদৈর্ঘ্যের মান নির্ণয় কর।(A monochromatic light of wavelength λ is incident on a metallic surface then ejects photo-electron and the value of stopping potential is 3Vo. When the same surface is illuminated by a light of wavelength 2λ., the stopping potential becomes Vo. Calculate the threshold wavelength for this surface to eject photo electrons.)