Sᴄɪᴇηᴄᴇ Aηᴅ Cᴏᴍᴘᴜᴛᴇʀ Nᴏᴛᴇs™ 🎲

🏝🔷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🤞🤞 ✍️✍️CREDIT:-Krushna⭐️⭐️ 🏝🏝© Join Now:: @Daily_Science_Computer_Notes

🔷1: ‘Isotonic solution’ refers to those two solutions which have- Same Osmotic pressure 🔶2. Name the metal which is generally mixed with gold while making the ornaments - Copper 🔷3. Which law states that at a constant temperature, the volume of a definite mass of a gas is inversely proportional to pressure - Boyle’s Law 🔶4. Gamma rays were discovered by - Paul Villard 🔶5. J J Thomson is credited with the discovery of - Electrons 🔷6. Which equation explains the dual nature of electron - De-Broglie Equation 🔶7. The watermelon model was given by - Thomson’s model 🔷8. Charle’s Law describes the relation between - Volume and Temperature 👉👉** Charles' law describes the relationship between temperature and volume at a constant pressure. Increasing the temperature of a volume of gas causes individual gas molecules to move faster. 🔶9. Who out classified the elements into metals and non-metals - Lavoisier ☂️10. NaCl is formed by which bond - Ionic or electrovalent bond ☂️11. Hair cream, milk are the examples of - Emulsion ☂️12. Zeman’s effect is related with - Atomic Spectra ☂️13. Which bond is formed by the complete transfer of one or more electrons from one atom to another atom - Ionic Bond ☂️14. What is the number of periods in the modern periodic table? - 7 periods ☂️15. The atomic number of an element is the number of - Electrons or protons ☂️16. Proton/Neutron/Electron which of the following has the greatest mass? - Neutron ☂️17. The hardest substance available on earth is ____- Diamond The hardness of a diamond is due to the structure of its carbon atoms. In diamond, each carbon atom is bonded to four other carbon atoms which form giant, threedimensional structure. 🔰18. Rutherford’s scattering experiment proved the presence of - Nucleus in atoms 🔰19. The molecular weight of a substance can be calculated by measuring - Vapour Density 🔰20. The chemical behaviour of an atom is determined by its - Atomic number because that indicates the number of electrons 🔰21. Isotopes and Allotropes have the same chemical properties 🔰22. Rusting of iron is a - Chemical Change A chemical change is a change of materials into other, new materials with different properties and one or more new substances are formed. E.g. Iron Rust 🔰23. An exothermic reaction is one which is - Accompanied by liberation of heat 🔰24. Pencil “lead” is made up of - Graphite 🔰25. What is the Molar mass of Benzene? - 78.11 g·mol−1 🔰26. What is the atomic number of Iron? - 26 🔶27. Cathode rays can be deflected by – Both magnetic and electric fields 👉👉J. J. Thomson showed that cathode rays were composed of a previously unknown negatively charged particle, which was later named the electron. Cathode ray tubes (CRTs) use a focused beam of electrons deflected by electric or magnetic fields to create the image on a television screen. 🔷28. Which was first human-made plastic - Celluloid 🔶29. When a piece of quicklime is dipped in water, it gives bubbles. This bubbling is due to - the escape of water vapours 🔷30. What is the number of synthetic elements in Periodic Table - 20 Elements 👉👉**Chemical element that does not occur naturally on Earth, and can only be created artificially. So far, 20 synthetic elements have been created (those with atomic numbers 99–118). #IMPORTANT_FOR_COMING_EXAMS🤞🤞 ✍️✍️CREDIT:-Krushna⭐️⭐️ 🏝🏝© Join Now:: @Daily_Science_Computer_Notes

🤞🤞deleting in 10 mins so join👍👍

📕Some important questions 📕 🧬Science+ computer🧬 🎍distance of normal eye --6m 🎍Varicella Zoster virus present in chicken pox 🎍 World tobacco day --31 may 🎍Zika virus spreads -- leder mosquitoes 🎍DPT-- Dipthn's Perthses and fetanua 🎍Length of digestive system of adults in--- 30 feet 🎍Microsoft company established--1975 🎍Henry Bacquerel discoverd --Radioactivity 🎍Henry bae invented --video game 🎍 UHT --Ultra high temperature 🎍Bifocal lens invented-- Benjamin Franklin 🎍 Hydropower plant convert ---MECHNICAL energy to Electrical energy 🎍Physical research laboratory was established-- Vikram sarabhai 🎍CMOS-- COMPLEMENTRY METAL OXIDES SEMICONDUCTER 🎍SPINE has --33 bones #IMPORTANT_FOR_COMING_EXAMS🤞🤞 ✍️✍️CREDIT:-Krushna⭐️⭐️ 🏝🏝© Join Now:: @Daily_Science_Computer_Notes

#IMPORTANT_FOR_COMING_EXAMS🤞🤞 ✍️✍️CREDIT:-Krushna⭐️⭐️ 🏝🏝© Join Now:: @Daily_Science_Computer_Notes