NEET CBSE NOTES Class 9 10

🌟Some Important Increasing Order 🌟: 🌟 1. Bond Angle : (i) CH4 , C2H4 , C2H2 (ii) H2O, NH3 , CH4 , CO2 (iii) H2O, NH3 , CH4 , BH3 (iv) NO2—, NO2 , NO2+ (v) H2Se, H2S, H2O (vi) AsH3 , PH3 , NH3 (vii) PF3 , PCl3 , PBr3 , PI3 (viii) NF3 , NCl3 (ix) NF3 , NH3 , NCl3 (x) OF2 , OH2 , Cl2O 🌟 2. Melting Point : (i) Cs, Rb, K, Na, Li (ii) Mg, Ba, Sr, Ca, Be (iii) CaI2 , CaBr2 , CaCl2 , CaF2 (iv) BeCl2 , MgCl2 , CaCl2 , SrCl2 , BaCl2 (v) NaI, NaBr, NaCl, NaF (vi) CsCl, RbCl, KCl, NaCl (vii) AlCl3 , MgCl2 , NaCl 🌟 3.Boiling Point : (i) PH3 , AsH3 , NH3 , SbH3 (ii) H2S, H2Se, H2O (iii) HCl, HBr, HI, HF (iv) NH3 , HF, H2O (v) He, Ne, Ar, Kr (vi) H2O, D2O (vii) H2 , Cl2 , Br2 🌟 4.Dipole moments : (i) CCl4 , CHCl3 , CH2Cl2 ,CH3Cl (ii) NF3 , NH3 , H2O, HF (iii) Cis-chloropropene, Trans-chloropropene (iv) p, m, o-dichlorobenzene (v) CH3I, CH3Br, CH3F, CH3Cl (vi) NH3 , SO2 , H2O, HF (vii) H2S, H2O (viii) HI, HBr, HCl, HF (ix) PH3 , ASH3 , SbH3 , NH3 (x) H2O, H2O2 ⑉⑉⑉⑉⑉⑉⑉⑉⑉⑉༄༄༄⑉⑉⑉⑉⑉⑉⑉⑉⑉⑉ 🤗MUST SHARE WITH FRIENDS 🤩

✅ ENVIRONMENTAL CHEMISTRY NOTES✅

✅ BIOLOGICAL CLASSIFICATION NOTES✅

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✅CELL CYCLE AND CELL DIVISION NOTES✅ 📝HANDWRITTEN NOTES📚 ⑉⑉⑉⑉⑉⑉⑉⑉⑉⑉༄༄༄⑉⑉⑉⑉⑉⑉⑉⑉⑉⑉ 🤗MUST SHARE WITH FRIENDS 🤩

🌟 Important Increasing Order Ionization Energy (i) Na, Al, Mg, Si (ii) Li, B, Be, C, O, N, F, Ne, He (Ist I.P.) (iii) Be, C, B, N, F, O, Ne, He, Li (IInd I.P.) Electron Affinity (i) I, Br, F, Cl (ii) Cu, Ag, Au (EA, of Au is very high = 222 kJ mol–1) (iii) O, S, F, Cl (iv) N, P, O, S Electronegativity (i) As, P, S, Cl (ii) I, Br, Cl, F (iii) C, N, O, F OXYACIDS OF HALOGEN 1. Hypochlorous acid- HClO 2. Chlorous acid - HClO2 3. Chloric acid - HClO3 4. Perchloric acid - HClO4 Acidic  Strength HClO < HClO2 < HClO3 < HClO4 Oxidising Nature HClO > HClO2 > HClO3 > HClO4

✍️Revision Notes on Vectors✍️ ➖➖➖➖➖➖➖➖➖➖➖➖ Some Basic Results of Vector Calculus: 1) Vectors in the same direction can be added by simply adding their magnitudes. But if the vectors to be added are in opposite directions, then their magnitudes are subtracted and not added. 2) Column vectors can be added by simply adding the values in each row. 3) You can find the magnitude of a vector in three dimensions by using the formula a2 = b2 + c2 + d2, where a is the magnitude of the vector, and b, c, and d are the components in each direction. 4) If l1a + m1b = l2a + m2b then l1 = l2 and m1 = m2 5) Collinear Vectors are also parallel vectors except that they lie on the same line. 6) When two vectors are parallel, the dot product of the vectors is 1 and their cross product is zero. 7)Two collinear vectors are always linearly dependent. 8) Two non-collinear non-zero vectors are always linearly independent 9) Three coplanar vectors are always linearly dependent. 10) Three non-coplanar non-zero vectors are always linearly independent 11) More than 3 vectors are always linearly dependent. 12) Three vectors are linearly dependent if they are coplanar that means any one of them can be represented as a linear combination of other two. STAY UNMUTED 🙂

✔️Important SCIENCE (CHEMISTRY ) ✅. Gases used in welding are ? – Acetylene & Oxygen ✅ Gases used by sea divers for breathing are ? – Oxygen & Helium ✅. Best sources for Vitamin D are? – Sunlight & Fish liver ✅Zinc Phosphide is used as? – Rat Poison ✅. Fuse wire is made up of – Lead and Tin ✅Purest form of Iron is? – Wrought Iron ✅ Radium is extracted from . – Pitchblende ✅ Which agent is as ‘seed’ in artificial rain? – Silver Iodide ✅. Oxides of metals are . – Alkaline ✅ During the process of ‘rusting’ , the weight of iron . –Increases ✅ (metal) is liquid at room temperature. – Mercury ✅ What is the formula of common salt – NaCl ✅. What is the maximum number of electrons that a p-orbital can hold – 6 ✅. What is used in fire extinguisher – Sodium bicarbonate ✅ What is the nature of metal oxides – Basic ✅. Which gas burns with popping sound – Hydrogen ✅ Which metal is used for galvanization – Zinc ✅. What is the nature of bleaching powder – Oxidising agent ✅ Which is stored in Kerosene – Sodium ✅ Phenolphthalein gives which color in acidic medium – Colorless ✅ Which gas is used in cigarette lighters? – Butane ✅. Biogas chiefly contains . – Methane ✅. Chemical used as fixer in Photography is . – Sodium thiosulphate ✅Aspirin is – Acetyl Salicylic Acid ✅ is also known as ‘Stranger Gas.’ – Xenon ✅ Natural rubber is a polymer derived from . – Isoprene

✅VECTORS  IN ONE SHOT ✅

✅PHYSICS IMPORTANT CONCEPTS PART-1✅