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Histroy total 1100+pages and geography also 1200+pages..fully package..👍

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🌺PERIODIC TABLE MOST ASKED QUESTION IN EXAMS🌺 ━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 🔻🔻Most abundant element on earth's crust - Oxygen 🔺🔺Most abundant metal in earth's crust - Aluminium 🔻🔻Most abundant metalloid in earth's crust - Silicon 🔺🔺Most abundant element in atmosphere - Nitrogen 🔻🔻Most abundant element in the universe - Hydrogen 🔺🔺Most abundant element in human body - Oxygen 🔻🔻Most abundant gas in atmosphere - Nitrogen 🔺🔺Most abundant element in sea water - Chlorine 🔻🔻Most abundant element in moon's surface - Titanium 🔺🔺Most abundant metal present in human body and bones - Calcium 🔻🔻Most abundant metal compound in bones - Calcium phosphate 🔺🔺Most abundant compound on earth's surface - Water (H2O) 🔻🔻Most abundant compound in sea water - Sodium Chloride 🔻🔻Second most abundant compound in sea water - Magnesium Chloride 🔺🔺Most chemically reactive element - Fluorine 🔻🔻Second most chemically reactive element - Chlorine 🔺🔺The lightest and simplest element - Hydrogen 🔻🔻The lightest metal - Lithium 🔺🔺The rarest element in the earth - Astatine 🔻🔻The heaviest element - Osmium 🔺🔺The heaviest gaseous element - Radon 🔻🔻First man made element - Technetium 🔺🔺Most stable element - Lead 🔷🔷The periodic table is divided into 4 main blocks 👉👉*S block - elements of group 1 and 2 👉👉*P block - elements of group 13 to 18 👉👉*D block - elements of group 3 to 12 👉👉*F block - Lanthanides and Actinides ☂️☂️*The shortest period of the periodic table 🍁🍁Ans : First period ☂️☂️The longest period of the periodic table 🍁🍁Ans : Sixth period ☂️☂️Elements with atomic number 57-71 are known as 🍁🍁Ans : Lanthanides (rare earths) ☂️☂️Elements with atomic number 89-103 are known as 🍁🍁Ans : Actinides (radio active rare earths) ☂️☂️Total number of elements in periodic table 🍁🍁Ans : 118 ☂️☂️The number of naturally occurring elements 🍁🍁Ans : 92 #IMPORTANT_FOR_COMING_EXAMS🤞🤞

🏝🔷Some Equipment used to Transform Energy🔷🏝 ➡️S.➖ Equipment ➖Energy Transformed 🔰1. Dynamo➖ Mechanical energy into electrical energy 🔰2. Candle ➖Chemical energy into light and heat energy. 🔰3. Microphone➖ Sound energy into electrical energy. 🔰4. Loud Speaker➖ Electrical energy into sound energy. 🔰5. Solar Cell ➖Solar energy into electrical energy. 🔰6. Tube light ➖Electrical energy into light energy. 🔰7. Electric Bulb➖ Electrical energy into light and heat energy. 🔰8. Battery➖ Chemical energy into electrical energy. 🔰9. Electric motor➖ Electrical energy into mechanical energy. 🔰10. Sitar➖ Mechanical energy into sound energy. 🎻🎻🎻🎻🎻🎻🎻🎻🎻🎻🎻🎻🎻🎻🎻🎻🎻🎻🎻 🏝🏝🔰Radioactive isotopes🔰🏝🏝 🔺Arsenic–74 → detect tumors 🔺Sodium–24 → Blood clot 🔺Iodine–131 → Activity of thyroid gland 🔺Cobalt–60 → Treat of cancer #IMPORTANT_FOR_COMING_EXAMS🤞🤞

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Tricky ebook oneliner👆

📥 Full tricky ebook Link📥 >>> CLICK HERE <<< 🔰 Download Fast👆 👍Boost your GA | GS Section 👏NOTE- AFTER PAYMENT CHECK YOUR EMAIL, FROM THERE YOU CAN DOWNLOAD THE FILE THANKS & ALL THE BEST