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⭐️ CBSC Complete 11th + 12th Study Material Package in one post ⭐️#timesaverpost━━━━━━━━━━━━━━━━━━━━⭐️ 12th Notes Best Typed Chapter wise Notes ⭐️➜ https://t.me/CBSE_Class_11_12th_Science_Notes/937━━━━━━━━━━━━━━━━━━━━⭐️ 11th Notes Best Typed Chapter wise Notes ⭐️➜ https://t.me/CBSE_Class_11_12th_Science_Notes/870━━━━━━━━━━━━━━━━━━━━🔰 All Subject Exercise Solution Class 12 NCERT CBSE➭ https://t.me/Class_12_NCERT_CBSE_Solution/391━━━━━━━━━━━━━━━━━━━━PCMB REVISION NOTES PHYSICS - https://t.me/Class_10th_11_12th_Science_Notes/9255CHEMISTRY - https://t.me/Class_10th_11_12th_Science_Notes/9256BIOLOGY - https://t.me/Class_10th_11_12th_Science_Notes/9257MATHEMATICS - https://t.me/Class_10th_11_12th_Science_Notes/9258━━━━━━━━━━━━━━━━━━━━

🌟 Important Points of NCERT 🌟1. 1770 : Joseph Priestley - Essential role of air in growth of green plant. 2. 1774 : Joseph Priestley - Discovered O2.3. 1831 : Robert Brown - Ist discovered and described nucleus. 4. 1838 : Schleiden (German Botanist) - Work on plants. 5. 1839 : Schwann(British Zoologist) - Work on both plants & animals. 6. 1855 : Rudolf Virchow - Omnis cellula-e-cellula (cells arises from pre-existing cells). 7. Life originate from pre-existing life : Pasteur (Yeast). 8. Life originate from non-living (decaying & rotting matter) : Spontaneous generation. 9. Life originate from pre-existing non-living organic molecules (RNA, Protein)- Oparin (Russia) & Haldane (England)- Chemical Evolution. 10. : Mendal experiment on garden pea. (7 years)11. 1860 : Julius von Sachs - Developed hydroponics. 12. 1865 : Mendal published his work. 13. 1866 : Langdon Down - Down’s syndrome. 14. 1869 : Friedrich Meischer - Ist identified DNA and named it nuclein. 15. 1891 : Henking - Discovered X-body. 16. 1891 : Fossil discovered in Java - Homo erectus. 17. 1892 : Ivanowsky - Discovered virus. 18. 1898 : Beijerinek - Contagium vivum fluidum (infectious living fluid). 19. 1898 : Camillo Golgi - Discovered (observed) G.B. 20. 1900 : de Vries, Corre ns and von Tsche rmak inde pende ntly rediscovered Mendel’s results.21. 1902 : Chromosome movement during meiosis has been worked out. 22. 1905 : Law of limiting factor (Blackmann).23. 1928 : Fredrick Griffith - Transforming experiment with Streptococcus pneumoniae (Diplococcus). 24. 1935 : Stanley - Crystallised viruses. 25. 1937 : Ramde o Misra obtained Ph.D. in Ecology from Lee ds university (U.K.). 26. 1938 : Coelocanth fish caught in South Africa. 27. 1945 : Fleming, Chain & Florey - Awarded Nobel prize. 28. 1950 : Watson obtained Ph.D. on a study of the effect of hard X-rays on bacteriophage multiplication. 29. 1951 : Family planning programme started in India. 30. 1952 : Hershey & Chase-experiment on bacteriophage or Bacterial virus gives unequivocal proof that DNA is the genetic material. 31. 1953 : Miller experiment - Methane, ammonia, hydrogen & water vapour. 32. 1953 : Watson & Crick - Double helical structure of B-DNA & replication scheme. 33. 1953 : Palade : Discovered ribosome. 34. 1954 : Ramachandran - Triple helical model of collagen, published in Nature. 35. 1954 : Crick complete d Ph.D. on a thesis “X-rays diffraction : polypeptides and proteins. 36. 1958 : Meselson & Stahl - Work on E.coli proves semiconservative replication of DNA in prokaryotes. 37. 1958 : Taylor - Work on Vicia faba proves semiconservative replication of DNA in eukaryotes. 38. 1960 : Katherine Esau - Published “Anatomy of Seed Plants.” 39. 1961 : Melvin Calvin - Nobel Prize. 40. 1962 : Watson, Crick and Wilikins - Nobel Prize. 41. 1963 : Wheat varieties (Sonalika & Kalyan sona) introduced. 42. 1963 : Two enzyme responsible for restricting growth of bacteriophage in E.coli were isolated. 43. 1966 : Derivative of IR-8 & Taichung native-I introduced. 44. 1969 : Whittaker - Five kingdom classification.45. 1971 : Govt. of India legalized MTP. 46. 1971 : Diener- Discovered Viroid(free RNA without capsid). 47. 1972 : Singer & Nicolson - Fluid mosaic model. 48. 1972 : Stanley Cohen & Herbert Boyer - Formed Ist recombinant DNA. 49. 1972 : Establishme nt of NCEPC - National Committe e for Environmental Planning & Coordination. 50. 1974 : Water act. 51. 1980 : Joint forest management, (JFM). 52. 1981 : AIDS was Ist reported. 53. 1981 : Air act. 54. 1983 : Eli Lily (An American company) produces insulin in E.coli by recombinant DNA technology. 55. 1984 : Establishment of MOEF : Ministry of Environment & Forest. 56. 1986 : Environment Protection Act. 57. 1987 : Montreal protocol. Held in Montreal, Canada.💐 Share & React ❤️ below.Join For Morehttps://whatsapp.com/channel/0029Va9492L3QxRv5MtNFF0Y https://whatsapp.com/channel/0029Va9492L3QxRv5MtNFF0Y

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━━━━━━━━━━━━━━━━━━━━ ✅ QUICK REVISION ✅ ✅ FORMULAS ✅ 🎯1. Formulas related to force:🔰F = ma🔰F = kx🔰F = m(vf² - vi²/2S)🔰F = mv/t🔰F = md/t²🔰F = m(vf - vi)/t🔰F = Area × density × velocity²🔰F = 1/2 mv²/d🔰F = 1/2 Pv/d🔰F = Power/velocity🔰Fc = mv²/r🔰Fc = mrw²🔰Fc/2 = mv²/2r🔰Fc = 2K.E/r🔰F = Area × Stress🔰F = pir² × stress🔰F = YA × Strain🔰F = YAl/L🔰F = pressure × area🔰F = change in momentum × time interval🔰F = - 2mVx × Vx/2l🔰F2 = F1/A1 × A2🔰F = qE🔰F = kQ/r²🔰F = ILB sintheta🔰F = q (v × B) 🔰F = qE + q(v × B)🎯2. Formulas related to energy and work👉Fd = k.e👉mgh = 1/2 mv²👉E = 1/2 kx²👉E = Ve👉E = nhf👉E = nhc/lambda👉E = Pc👉K.e = hf - work function = hf - hf° = hf - hc/w° (here w° is cutt off wavelength) 👉E = 1/2 Pv👉mv²/2r= Fc/2👉K.E/r = Fc/2👉K.E = Fc×/r/2👉K.e = 1.5 KT👉E = VQ👉E = Power × time👉E = Fvt👉% loss in K.e = v1² - v2²/v1² × 100👉% loss in P.e = h1² - h²/h1² × 100👉Energy lost due to air friction(Fh) = 1/2mv² - mgh (when body is thrown upward) 👉Energy lost due to air friction(FS) = mgh - 1/2mv² (when body is thrown downward) 👉E = 1/2 CV² (capacitor) 👉E = R × hc (R is Rydberg' constant) J = m-¹ × Js ms-¹👉hf kalpha x rays = EL - Ekhf kbeta x rays = EM - Ek👉Binding energy = mass defect × c²👉W = Fd Costheta👉W = nmgh (when person is climbing stairs) 👉W = n(m+m) gh (when person is climbing stairs with some load)👉W = 0mgh + 1mgh + 2mgh + 3mgh ....... (in case of stacking bricks. For ist brick h=0. For 2nd brick h=1. For 3rd brick h=2 and so on)👉W = Fd = PA × change in V👉W = Q - change in U👉Q = mc × change in TT/273.16 = Q/Q3 (Thermodynamic scale) 👉W = I²Rt👉W = emf×charge👉W = VQ👉W = 1/2 lF👉W = YAl²/2L👉W = StressAl²/2Strain 👉W = PressureAl²/2Strain👉W = Fl²/2Strain🎯3. Formulas related to Power💥P = Fv💥P = E/t💥P = n(mgh/t) 💥P = Fd/t💥P = mv²/2t🎯4. Formulas related to distance, displacement, velocity and accelration📝d = vt📝d = at²📝d = (vf + vi/2) ×t📝d = 5t² (for distance in 'n' seconds) 📝d = 5(2tn - 1) (for distance in 'nth' second) 📝d = 1/2 mv²/F📝d = vit + 5t²📝d = v × underroot 2H/g📝d = vt = x°wt = x°2pi/T × t = x°2pift📝x = x° Sin wt📝x = x° Sin (underroot k/m) tvf = vi + at📝2as = vf² - vi²📝2as = (vi + at)² - vi²📝2as = vf² - (vf - at) ²📝v = underroot Vfx² + Vfy² 📝v = Power/Force📝v = 2×K.E/momentum (k.e = 1/2 Pv) 📝v² = 2×Power×time/mass (P = mv²/2t)v = underroot 2asv = underroot gr (speed at highest point in a verticle circle)v = underroot 5gr (speed at lowest point in a verticle circle) 📝v² = 2FS/m📝v² = 2E/m📝v² = 2Ve/m📝v = eBr/m (velocity of particle under action of magnetic force along circular path) 📝v² = Force/Area.Density📝v = w underroot x°² - x²📝v = underroot k/m × underroot x°² - x²📝v = x°w (at mean position where x=0)📝v = x° underoot k/m📝v = v° underroot 1 - x²/x°² (for determining ratio b/w inst. Velocity and maxi. Velocity) 📝v= x°2pif = x°2pi/T📝a = x°w² = x°w.w = vw = v.2pifCommon velocity = m1v1/m1+m2📝vi² = Rg/Sin2theta📝v = underoot Tension×length/mass📝V = 2pi ke²/nh (speed of e- in nth orbit) 📝Vn = V/n📝v = nh/2pimr (lambda = 2pir and lambda=h/p) 📝ma = kx📝a = kx/m (SHM) 📝a = - gx/l (Simple pendulum) 📝ac = v²/r🎯5. Formulas related to wavelength 'w' ❌w = v/f❌w = 1/wave number❌w1 = 2l (when pipe is opened at both ends) ❌w1 = 4l (when pipe is opened at one end) ❌Delta w = Us/f (doppler shift) Wavelength for obs. = w - delta w = v/f - Us/f ❌w = hc/Ve❌w = hc/E❌w = h/mv❌w = h/P as P = underroot 2mE so❌w = h/underroot 2mE (de Broglie wavelength) ❌w = underroot 150/V A° (short method for de Broglie wavelength. This formula is applicable only for e-) ❌1/w = RH (1/p²-1/n²)❌Wmaxi/Wmini = n²/n²-p² (for determining ratio b/w maxi. Wavelength to mini. Wavelength for series of atomic spectrum) ❌w = 2pir/n (n is no. of loops in a circleGive Heart ❤️❤️Join WhatsApp Group https://whatsapp.com/channel/0029Va9492L3QxRv5MtNFF0Y

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Revision Notes Mathmatics Class 12◻️ Revision 1. Relations and Functions Noteshttps://t.me/CBSE_Class_11_12th_Science_Notes/1034◻️ Revision 2 Inverse Trigonometric Functions Noteshttps://t.me/CBSE_Class_11_12th_Science_Notes/1035◻️ Revision 3. Matrices Noteshttps://t.me/CBSE_Class_11_12th_Science_Notes/1036◻️ Revision 4. Determinants Noteshttps://t.me/CBSE_Class_11_12th_Science_Notes/1037◻️ Revision 5. Continuity and Differentiability Noteshttps://t.me/CBSE_Class_11_12th_Science_Notes/1038◻️ Revision 6. Application of Derivatives Noteshttps://t.me/CBSE_Class_11_12th_Science_Notes/1039

Biology Revision Notes Class 12◻️ Revision 1. Reproduction in Organisms Noteshttps://t.me/CBSE_Class_11_12th_Science_Notes/1018◻️ Revision 2. Sexual Reproduction in Flowering plantshttps://t.me/CBSE_Class_11_12th_Science_Notes/1019◻️ Revision 3. Human Reproduction Noteshttps://t.me/CBSE_Class_11_12th_Science_Notes/1020◻️ Revision 4. Reproductive Health Noteshttps://t.me/CBSE_Class_11_12th_Science_Notes/1021◻️ Revision 5. Principles of Inheritance and Variationhttps://t.me/CBSE_Class_11_12th_Science_Notes/1022◻️ Revision 6. Molecular Basis of Inheritancehttps://t.me/CBSE_Class_11_12th_Science_Notes/1023◻️ Revision 7. Evolution Noteshttps://t.me/CBSE_Class_11_12th_Science_Notes/1024◻️ Revision 8. Human Health and Disease Noteshttps://t.me/CBSE_Class_11_12th_Science_Notes/1025◻️ Revision 9. Strategies for Enhancement in Food Productionhttps://t.me/CBSE_Class_11_12th_Science_Notes/1026◻️ Revision 10. Microbes in Human Welfarehttps://t.me/CBSE_Class_11_12th_Science_Notes/1027◻️ Revision 11. Biotechnology Principles and Processeshttps://t.me/CBSE_Class_11_12th_Science_Notes/1028◻️ Revision 12. Biotechnology and its Applications Noteshttps://t.me/CBSE_Class_11_12th_Science_Notes/1029◻️ Revision 13. Organisms and Populations Noteshttps://t.me/CBSE_Class_11_12th_Science_Notes/1030◻️ Revision 14. Ecosystem Noteshttps://t.me/CBSE_Class_11_12th_Science_Notes/1031◻️ Revision 15. Biodiversity and Conservation Noteshttps://t.me/CBSE_Class_11_12th_Science_Notes/1032◻️ Revision 16. Environmental Issues Noteshttps://t.me/CBSE_Class_11_12th_Science_Notes/1033

Chemistry Class 12 Revision Notes ◻️ Revision 1. Solid State Noteshttps://t.me/CBSE_Class_11_12th_Science_Notes/1007◻️ Revision 2. Solutions Noteshttps://t.me/CBSE_Class_11_12th_Science_Notes/1008◻️ Revision 3. Electrochemistry Noteshttps://t.me/CBSE_Class_11_12th_Science_Notes/1009◻️ Revision 4. Chemical Kinetics Noteshttps://t.me/CBSE_Class_11_12th_Science_Notes/1010◻️ Revision 5. Surface Chemistry Noteshttps://t.me/CBSE_Class_11_12th_Science_Notes/1011◻️ Revision 6 General Principles and Processes of Isolation of Elementshttps://t.me/CBSE_Class_11_12th_Science_Notes/1012◻️ Revision 7. The p-Block Elements Noteshttps://t.me/CBSE_Class_11_12th_Science_Notes/1013◻️ Revision 8. The d-and f-Block Elements Noteshttps://t.me/CBSE_Class_11_12th_Science_Notes/1014◻️ Revision 9. Coordination Compounds Noteshttps://t.me/CBSE_Class_11_12th_Science_Notes/1015

Class 12 Physics Revision Notes◻️ Revision 1 Electric Charges And Fieldshttps://t.me/CBSE_Class_11_12th_Science_Notes/997◻️ Revision 2. Electrostatic Potential And Capacitancehttps://t.me/CBSE_Class_11_12th_Science_Notes/998◻️ Revision 3. Current Electricityhttps://t.me/CBSE_Class_11_12th_Science_Notes/999◻️ Revision 4. Moving charges and Magnetismhttps://t.me/CBSE_Class_11_12th_Science_Notes/1000◻️ Revision 5. Magnetism And Matterhttps://t.me/CBSE_Class_11_12th_Science_Notes/1001◻️ Revision 6. Electromagnetic Inductionhttps://t.me/CBSE_Class_11_12th_Science_Notes/1002◻️ Revision 7. Alternating Currenthttps://t.me/CBSE_Class_11_12th_Science_Notes/1003◻️ Revision 8. Electromagnetic Waveshttps://t.me/CBSE_Class_11_12th_Science_Notes/1004

◻️ 4. Motion in a Straight Line Physics Class 11.pdf––––––––––––––––––➭ All Study Material Bot➭ Class 10, 11, 12 all Notes➭ CBSE Class 11 12 Notes➭ Maharashtra Board Notes✪ CHEMISTRY NOTES✪ BIOLOGY NOTES ✪ MATHMATICS NOTES◉ ◉ Join WhatsApp Group ◉ ◉https://whatsapp.com/channel/0029Va9492L3QxRv5MtNFF0Y◉ ◉ Join WhatsApp Group ◉ ◉

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◻️ 1. Unites and Measurement Notes Physics Class 11.pdf––––––––––––––––––➭ All Study Material Bot➭ Class 10, 11, 12 all Notes➭ CBSE Class 11 12 Notes➭ Maharashtra Board Notes✪ CHEMISTRY NOTES✪ BIOLOGY NOTES ✪ MATHMATICS NOTES◉ ◉ Join WhatsApp Group ◉ ◉https://whatsapp.com/channel/0029Va9492L3QxRv5MtNFF0Y◉ ◉ Join WhatsApp Group ◉ ◉