Fiitjee Study Materials

Your ANTHE Exam Details Like Roll Number & Password Already Shared To You On WhatsApp, Mail Etc. All The Best To Everyone! ❤️ 10 Bje Se Online Test Chalu ho Jayega. Be Ready For Prizes Note : Jisne Bhi Register Kiya h, Zarur Test Dena Ye Ek Golden Opportunity h.

ANTHE 2022 LIVE from 5th to 13th November Get up to 100% Scholarship* & All India Rank Win a chance to win a Trip to NASA* & Cash Awards* How to take ANTHE Online :- youtu.be/TMPIp_2o9rI How to fill OMR Answer Sheet (for Offline exam) :- youtu.be/ngJh2q1bKi0 Login with Roll number & DOB to give Exam :- https://anthe.aakash.ac.in/exam/login

𝗔𝗡𝗧𝗛𝗘 𝟮𝟬𝟮𝟮 𝗟𝗜𝗩𝗘 𝗙𝗥𝗢𝗠 𝗧𝗢𝗠𝗠𝗢𝗥𝗢𝗪 𝗜.𝗘 𝗙𝗥𝗢𝗠 ‼️‼️𝟱 𝗻𝗼𝘃 - 𝟭𝟯 𝗻𝗼𝘃 ‼️‼️ Get up to 100% Scholarship* & All India Rank Win a chance to win a Trip to NASA* & Cash Awards* How to take ANTHE Online :- youtu.be/TMPIp_2o9rI How to fill OMR Answer Sheet (for Offline exam) :- youtu.be/ngJh2q1bKi0 Login with Roll number & DOB to give Exam :- https://anthe.aakash.ac.in/exam/login 𝗝𝗶𝘀𝗻𝗲 𝗷𝗶𝘀𝗻𝗲 𝗯𝗵𝗮𝗿𝗮 𝘁𝗵𝗮 𝘆𝗮𝗮𝗱 𝘀𝗲 𝗮𝗽𝗻𝗜 𝗰𝗵𝗼𝗼𝘀𝗲𝗻 𝗱𝗮𝘁𝗲 𝗽𝗮𝗿 𝗱𝗲𝗱𝗲𝗻𝗮 𝘁𝗲𝘀𝘁❤️❤️💯💯

✅Notes on s-Block Elements: Sodium Carbonate (Washing soda) (Na2CO3): a) Preparation: Solvay process: Carbon dioxide gas is bubbled through a brine solution saturated with ammonia and itresults in the formation of sodium hydrogen carbonate. NH3 + H2O + CO2 → NH4HCO3 NaCI + NH4HCO3 → NaHCO3 + NH4CI Sodium hydrogen carbonate so formed precipitates out because of the common ion effect caused due to the presence of excess of NaCl. The precipitated NaHCO3 is filtered off and then ignited to get Na2CO3. 2NaHCO3 → Na2CO3 + CO2 + H2O b) Properties 1. The aqueous solution absorbs CO2 yielding sparingly soluble sodium bicarbonate. Na2CO3 + H2O + CO2 → 2NaHCO­3 2. dissolves in acids with an effervescence of carbondioxide and is causticised by lime to give caustic soda. Na2CO3 + 2HCl →2NaCl + H2O + CO2 Na2CO3 + Ca(OH)2 → 2NaOH + CaCO3 3. Fusion with silica, sodium carbonate yields sodium silicate. Na2CO3 + SiO2 → Na2SiO3 + CO­2 4. Hydrolysis – being a salt of a strong base (NaOH) and weak acid (H2CO3), when dissolved in water sodium carbonate. Undergoes hydrolysis to form an alkaline solution Na2CO3 + 2H2O→ H2CO3 + 2NaOH c) Uses It is used for softening hard water. A mixture of sodium carbonate & potassium carbonate is used as fusion mixture. As an important laboratory reagent both in qualitative and quantitative analysis. It is used in paper, paints and textile industries. It is used for washing purposes in laundry. It is used in the manufacture of glass, borax, soap and caustic soda. Alkali Earth Metals (Group II elements of modern periodic table): Beryllium (Be), Magnesium (Mg), Calcium (Ca), Strontium (Sr), Barium (Ba) and Radium (Ra). Physical Properties of Alkali Earth Metals: 1. Alkali earth metals are almost similar in properties to the corresponding alkali metals. Higher melting points than alkali metals Higher boiling points alkali metals Higher densities alkali metals Harder than the corresponding alkali metals 2. Atomic and ionic radii The atomic radii as well as ionic radii of the members of the family are smaller than the corresponding members of alkali metals. 3. Ionization energy: The alkaline earth metals owing to their large size of atoms have fairly low values of ionization energies as compared to the p – block elements. However with in the group, the ionization energy decreases as the atomic number increases. It is because of increase in atomic size due to addition of new shells and increase in the magnitude of screening effect of the electrons in inner shells. Because their (IE)1 is larger than that of their alkali metal neighbours, the group IIA metals trend to the some what less reactive than alkali metals. The general reactivity trend is Ba > Sr > Ca > Mg > Be. 4. Oxidation state: The alkaline earth metal have two electrons in their valence shell and by losing these electrons, these atoms acquire the stable noble gas configuration. Thus, unlike alkali metals, the alkaline earth metals exhibit +2 oxidation state in their compounds.

ANTHE 2022 LIVE from 5th to 13th November Get up to 100% Scholarship* & All India Rank Win a chance to win a Trip to NASA* & Cash Awards* How to take ANTHE Online :- youtu.be/TMPIp_2o9rI How to fill OMR Answer Sheet (for Offline exam) :- youtu.be/ngJh2q1bKi0 Login with Roll number & DOB to give Exam :- https://anthe.aakash.ac.in/exam/login

Join @EduBack for more

❇️ pH मान [ pH value ] 📚📚 ━━━━━━━━━━━━━━━━━━ ▪️ जल का pH मान कितना होता है = 7 ▪️ दूध का PH मान कितना होता है = 6.4 ▪️ सिरके का PH कितना होता है = 3 ▪️ मानव रक्त का pH मान = 7.4 ▪️ नीबू के रस का pH मान = 2.4 ▪️ NaCl का pH मान = 7 ▪️ pH पैमाने का पता किसने लगाया = सारेन्सन ने ▪️ अम्लीय घोल का pH मान कितना होता है = 7 से कम ▪️ उदासिन घोल का pH मान = 7 ▪️ शराब का pH मान = 3.5 ▪️ मानव मूत्र का pH मान = 4.8 - 8.4 ▪️ समुद्री जल का pH मान = 8.1 ▪️ आँसू का pH मान = 7.4 ▪️ मानव लार का pH मान = 6.5

Nomenclature of Alcohol 🗒️ Join For Biology : https://t.me/+ndr_cr0luFJhMTU1 🗒️ Join For Physics : https://t.me/+HIhBSm0sINk3ODIx

🛑 Handwritten Notes : Animal Tissues 🗒️ Join For Physics : https://t.me/+HIhBSm0sINk3ODIx 🗒️ Join For Chemistry : https://t.me/+VuhVtiDnZ-VhNGMx

🛑 Handwritten Notes : Wave Optics 🗒️ Join For Biology : https://t.me/+ndr_cr0luFJhMTU1 🗒️ Join For Chemistry : https://t.me/+VuhVtiDnZ-VhNGMx