Sᴄɪᴇηᴄᴇ Aηᴅ Cᴏᴍᴘᴜᴛᴇʀ Nᴏᴛᴇs™ 🎲

☂️🔺☂️Imp Science One Liners☂️🔺☂️ ════════════♢.✰.♢══════════════ 🔷● Aluminium has the electronic configuration 2, 8, 3. 🔶● It is the most abundant metallic element in Earth's crust. 🔶● Sodium has the electronic configuration 2, 8, 1. 🔷● Magnesium has the electronic configuration 2, 8, 2. 🔶● Argon has the electronic configuration 2, 8, 8. 🔷● An instrument called the Ammeter measures the electric current in a circuit. 🔶● It is usually connected in series and has low resistance. 🔷● The electrical instrument that measures electrical resistance is called Ohmmeter. 🔶● Megohmmeter is to measure large values of resistance. 🔷● The device that is used to measure temperature is called Thermometer. 🔶● The device used to maintain orientation and angular velocity is called Gyroscope. 🔷● Cytokinins promotes cell division. 🔶● Abscisic acid promotes dormancy in seeds and Buds in plants. 🔷● Gibberellins are very helpful in stem elongation in plants. 🔶● Auxin promotes cell elongation in plants. #Revision #important

Rennin is a proteolytic enzyme found in gastric juice of infants which helps in the digestion of milk proteins. • Pepsin is a digestive enzyme that converts proteins into proteases and peptones. • Trypsin is also a digestive enzyme that activates other enzymes in the pancreatic juice. • Trypsin is formed in the small intestine while Pepsin and Renin form in the Stomach. • Lipase is secreted by gastric glands and activated by bile juice in digestion.

🔺🔺IMP ONELINER QUESTIONS🔺🔺 ✧═════════• ❁❀❁ •══════════✧ ☂️☂️• Non Reactive Elements are present in which group of Periodic Table? Group 18 ☂️☂️• In which group Sulphur is Present in the Periodic table? Group 16 ☂️☂️• Which metal has 2,8,3 as its electronic configuration? Aluminiu ☂️☂️• Formula of Power= Work/ Time ☂️☂️• Formula of Lithium Nitrate? LiNO₃ ☂️☂️• Valency of Halogen Group? 1 ☂️☂️Valency of N2? 10 (Two atoms of 5 makes it 10) ☂️☂️• Which element has the smallest atomic radius? Options: Na, Mg, S, Cl? Cl (79) ☂️☂️• What will be the electro-negativity on moving left to right in the Periodic table? Electronegativity increases from left to right in a row in the periodic table ☂️☂️• King of Acid? Sulphuric Acid ☂️☂️• Cuso4+Zn= znso4+cu (Displacement Reaction) #IMPORTANT_FOR_COMING_EXAMS🤞🤞

🔺🔺IMP ONELINER QUESTIONS🔺🔺 ✧═════════• ❁❀❁ •══════════✧ 🔹🔸Arrange Alkanes, Alkenes, and Alkynes in the decreasing order of carbon bonds? The decreasing order of carbon bonds: Alkyne(CnH2n-2)(Triple bond between C and C) > Alkene(CnH2n) (Double bond between C and C) > Alkanes(CnH2n+2) (single bond between C and C) 🔸🔹• Chemical Name of Slaked Lime? Calcium Hydroxide, Ca(OH)₂ 🔹🔸• Whichallotropep of carbon has the shape of the football? Buckminsterfullerene 🔸🔹• Which atom has 6 hydrogen and 6 carbon atoms? Benzene 🔹🔸Formula of Pressure? Thrust/ Area 🔸🔹• Who coined the Term Homosapiens? Carl Linnaeus 🔹🔸• Electronic Configuration of Halogens? The halogens all have the general electron configuration ns2np5 🔸🔹• Which chemical is used for hydrogenation of unsaturated hydrocarbons? Nickel 🔹🔸• What group do algae belong to? Kingdom Protista 🔸🔹• What is the chemical name of Chinese salt? Monosodium Glutamate. 🔹🔸• In Mendeleev's periodic table which element was placed before nickel? Cobalt 🔸🔹• How many hydrogen atoms are in Ethanol? 6 #IMPORTANT_FOR_COMING_EXAMS🤞🤞

1. Iron (Fe) ------------------ Haemetite, Magnetite 2. Uranium (U) ------------ Pitchblende 3. Lead (Pb) ---------------- Galena 4. Mercury (Hg) ---------- Cinnabar 5. Zinc (Zn) ----------------- Calamine 6. Gold (Au) ---------------- Calaverite 7. Sodium (Na) ------------ Borax, Chile Saltpeter 8. Aluminium (Al) ------- Bauxite, Corundum Cryolite 9. Calcium(Ca) ------------ Dolomite, Gypsum 10. Magnesium (Mg) ---- Dolomite, Epsom Salt 11. Potassium (K) -------- Carnalite

1. Total elements discovered ---------------------------------------------------------------- 118 2. Elements existing in nature -------------------------------------------------------------- 88 3. Artificially produced (man-made) elements -------------------------------------- 27 4. The element found to be most abundant on the earth's surface -------- Oxygen 5. The lightest element ------------------------------------------------------------------------- Hydrogen 6. The lightest metallic element ----------------------------------------------------------- Lithium 7. The liquid metallic element ------------------------------------------------------------- Mercury 8. The metal which is the best conductor of electricity ------------------------ Silver 9. The most malleable element ------------------------------------------------------------- Gold 10. The most reactive non-metallic element ------------------------------------------ Fluorine 11. The most reactive metallic element ------------------------------------------------- Cesium 12. The most electro-negative element -------------------------------------------------- Fluorine 13. The most powerful oxidising substance ------------------------------------------ Fluorine 14. The group of the most gaseous elements --------------------------------- Zero group (18th group) 15. The most abundantly found element in the human body --------------- Oxygen 16. The element kept inside kerosene oil --------------------------------------------- Sodium

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