Sᴄɪᴇηᴄᴇ Aηᴅ Cᴏᴍᴘᴜᴛᴇʀ Nᴏᴛᴇs™ 🎲

🔷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⭐️⭐️

Mycology's Father - D. Barry Mushroom is a living Fungus. What type of Tissue is found in Fungi - Plectenchyma How does Fungus store its Food - Glycogen Puffwalls are a Fungus. Some of the Major Diseases caused by Fungi 1- Aspergillus Fumigatus - Asthma 2- Tinea Pedis - Athlete's foot Disease 3- Tinea Capitis - Baldness 4- Acarus Scabies - Scabies 5- Trichophyton Lescosae - Shingles Fungi Growing on Different Things Fungi Growing on Wood - Merulius lacrimance Mung dung Fungus - Pyelobolus Formation of Penicillus Fungal - Penicillium Soil Fungus - Mucor (it is a fungal Fungus) Fungal Grow in Water - Eklaya Fungi Growing on the bark of Trees - corticolous Bacteria - These are Unicellular Organisms. Bacteria were discovered by Leuvenhack in 1683 AD, called Leuvenhack, the "Father of Bacteriology", the term Ehrenberg gave the Bacterium, Bacteria are studied in Bacteriology, Humans. The number of Cells in the Body are 10: Bacterial Cells, Bacteria are of many sizes such as - Bacillus, Cocus, Vibrio, Spirillum The smallest Bacteria is Spherical. What Bacteria do Nitrogen fixation in Soil - Azotobacter, Clostridium, Azospirillum What Bacteria fix Nitrogen in the Air - CyanoBacteria (Anabina, Nostoc) Which Bacteria present in Plant Roots fix Nitrogen - Rhizobium, Bradyrhizobium Which Bacterium causes the formation of Curd and Cheese from Milk - Lactobacillus Bacteria Bacteria are used to remove Hair (Tanning) from the surface of the Leather

🔺🏝🔺Formulas Common Names🔺🏝🔺 ✧════════════• ❁❀❁ • ════════════✧ 🔷H2O Water 🔹C6H12O6 Glucose 🔷NaCl Salt 🔹C2H6O Ethanol 🔷C2H4O2 Vinegar 🔹NH3 Ammonia 🔷C2H4O2 Acetic Acid 🔹C4H10 Butane 🔶H2SO4 Sulphuric Acid 🔸CH4 Methane 🔶C12H22O11 Sucrose (sugar) 🔸C3H8 Propane 🔶NaHCO3 Baking Soda 🔸N2O Dinitroen oxide 🔶C6H8O7 Citric Acid 🔸C8H18 Octane 🔶C10H16O Camphor #IMPORTANT_FOR_COMING_EXAMS🤞🤞

🔷🔹️Human diseases and organs affected by them ️🔹🔷 Malaria affects the spleen and red blood cells. Pyorrhea disease affects the gums. Sleep disorder is a brain disease. Dysentery affects our intestine. Cholera and typhoid also affect our intestines. Tuberculosis (TB) affects the lungs. In diphtheria disease, the respiratory tract is affected. Syphilis disease affects the genital organs. AIDS makes our immune system weak. Dengue fever affects the whole body. Smallpox, measles and small mother affect our whole body. Trachoma and glaucoma are diseases related to the eyes. Thalassemia disease affects the blood. Jaundice affects our liver. The skin is affected in herpes disease. Rabies affects our nervous system. Meningitis affects our brain.