Arvind academy notes

✔️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

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Chapter = Halo alkane - Halo arine Jee me bohat bar puch chuka he iss concept k upar . Neet me ane k chance jyada he . Here , to compare the stability of primary alkyl halaide in Sn¹ rxn = ☆ do not use rearrangement of carbo cataion Use = ⇘ Inductive effect dominant over H effect ⇘ β branching increase

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Chapter = Halo alkane - Halo arine Jee me bohat bar puch chuka he iss concept k upar . Neet me ane k chance jyada he . Here , to compare the stability of primary alkyl halaide in Sn¹ rxn = ☆ do not use rearrangement of carbo cataion Use = ⇘ Inductive effect dominant over H effect ⇘ β branching increase

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👉 Chemical Bonding Short Notes Mistake - Overlapping ke just uper waha pe correct kar lo sab Sigma>delta>π

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