STUDY247 YOUTUBE

Periodic Table elements and their Properties 1. Lowest electronegativity : Cs 2. Highest electronegativity : F 3. Highest ionization potential : He 4. Lowest ionization potential : Cs 5. Highest electron affinity : Chlorine 6. The radioactive element most commonly detected in humans is: Potassium-40 7. Least electropositive element : F 8. Lowest melting point metal : Hg 9. Highest melting point and boiling point metal : W (Tungsten) 10. Lowest melting point and boiling point non-metal : He 11. Notorious element : Hydrogen 12. Lightest element : Hydrogen 13. Smallest atomic size : H 14. Largest atomic size : Cs 15. Largest anionic size : I– 16. Smallest cation : H+ 17. Most electropositive element : Cs 18. Element with electronegativity next to Fluorine : Oxygen 19. Most abundant element in the universe : Hydrogen 20. Total number of gaseous elements in the periodic table : 11 (H, N, O, F, Cl, He, Ne, Ar, Kr, Xe, Rn) 21.At standard room temperature, only two elements are liquid: Mercury (Hg) and Bromine (Br). Cesium, Rubidium, Francium, and Gallium can become liquid at slightly higher temperatures than room temperature, they are not considered "liquid elements" at standard conditions. 22. Smallest anion : F– 23. Francium is the only radioactive element that is liquid at normal temperature and pressure (NTP). It's also the most electropositive and radioactive element. 24. Most abundant gas in the atmosphere : Nitrogen 25. Volatile d-block elements : Zn, Cd, Hg, Unb 26. Element containing no neutron : H 27. Most abundant element in earth’s crust : Oxygen 28. Rarest element on earth : At (astatine) 29. Most abundant metal in crust earth : Al 30. Elements have a maximum tendency for catenation in periodic table : Carbon 31. Non-metal having the highest melting point, boiling point : Carbon (diamond) 32. Metals showing highest oxidation state : Os (+8) 33. Most abundant d-block metal : Fe 34. Most abundant s-block metal : Ca 35. Strongest base : CsOH 36. Strongest basic oxide : Cs2O 37. Best electricity conductor among metals : Ag 38. Best electricity conductor among non-metals : Graphite 39. Most poisonous element : Polonium (Po)> Pu (Plutonium) 40. Liquid non-metal : Br 41. Element kept in water : Phosphorous (white phosphorus) 43. Elements sublime on heating : I2 44. Noble metals : Au, Pt etc. 45. Amphoteric metal : Be, Zn, Al, Sn, Pb 46. Amphoteric metalloid : Si 47. The six most well-known metalloids are boron (B), silicon (Si), germanium (Ge), arsenic (As), antimony (Sb), and tellurium (Te). 48. Non-metals having metallic lusture : Graphite, Iodine 49. Heaviest naturally occurring element : Uranium 50. Poorest conductor of electricity : Diamond 51. Hardest naturally occurring element : Diamond 52. Lightest solid metal : Li 53. Osmium (Os) is the densest naturally occurring element 54. Dry ice : Solid CO2 55. Technetium (Tc) was the first man-made element, synthesized in 1937. The name comes from the Greek word for "artificial".  56. Smallest period : Ist (2 elements) 57. Largest period in periodic table : 6th (32 elements) 58. Highest density (metals) : Os 59. Highest density (non-metals) : Iodine 60. Uranium is a radioactive chemical element with the symbol U and atomic number 92. There are three naturally occurring isotopes of uranium: Uranium-238, the heaviest and most abundant, uranium-235 and uranium-234. Uranium is found in solid-state at NTP. 61. Cobalt-60: It is a radioactive isotope of cobalt used as a radiation source in many common industrial applications. It is used to treat cancer 62. Iodine-131: It is a radioisotope of Iodine. It is most commonly used in the treatment of hyperthyroidism i.e Thyroid therapy.

Different Indian Organisations and their headquarters and Year of est. 1. Archaeological Survey of India (ASI) – New Delhi | 1861 2. Bureau of Indian Standards (BIS) – New Delhi | 1986 3. All India Radio (AIR) – New Delhi | 1936 Telecom Regulatory Authority of India (TRAI) – New Delhi | 1997 4. National Remote Sensing Centre (NRSC) – Hyderabad | 1974 5. National Disaster Management Authority (NDMA) – New Delhi | 2005 6. National Anti-Doping Agency (NADA) – New Delhi | 2005 7. Indian Military Academy (IMA) – Dehradun | 1932 8. National Institute of Ayurveda – Jaipur | 1976 9. Insolvency and Bankruptcy Board of India (IBBI) – New Delhi | 2016 10. All India Trade Union Congress (AITUC) – New Delhi | 1920 11.Indian Botanical Garden – Howrah, West Bengal | Estd: 1787 12. Indian Agricultural Research Institute (IARI) – New Delhi | Estd: 1905 13. Forest Research Institute (FRI) – Dehradun, Uttarakhand | Estd: 1906 14. Central Drug Research Institute (CDRI) – Lucknow, Uttar Pradesh | Estd: 1951 15. Central Rice Research Institute (CRRI) – Cuttack, Odisha | Estd: 1946 16. Central Tobacco Research Institute (CTRI) – Rajahmundry, Andhra Pradesh | Estd: 1945 17. Central Salt and Marine Chemicals Research Institute (CSMCRI) – Bhavnagar, Gujarat | Estd: 1954 18. Indian Institute of Spices Research (IISR) – Kozhikode, Kerala | Estd: 1975 19. National Environmental Engineering Research Institute (NEERI) – Nagpur, Maharashtra | Estd: 1958 20. National Institute of Oceanography (NIO) – Goa | Estd: 1966 21. Sugarcane Breeding Institute (SBI) – Coimbatore, Tamil Nadu | Estd: 1912 22. Indian Council of Agricultural Research (ICAR) – New Delhi | Estd: 1929 23. Council of Scientific and Industrial Research (CSIR) – New Delhi | Estd: 1942 24. National Dairy Research Institute (NDRI) – Karnal, Haryana | Estd: 1923

Festivals asked in SSC GD 1. Mamallapuram Dance Festival – Celebrated in Tamil Nadu, featuring Indian classical dances. 2. Swachh Bharat Abhiyaan – Celebrated on Gandhi Jayanti. 3. Thrissur Pooram – A vibrant temple festival of Kerala. 4. Bundi Utsav – Celebrated in Rajasthan. 5. Kalinga Mahotsav – Celebrated in Odisha. 6. Ali-Aye-Ligang – A spring festival in Assam. 7. Durga Puja – A UNESCO Intangible Cultural Heritage from West Bengal. 8. Chapchar Kut – A harvest festival of Mizoram. 9. Cheiraoba – New Year festival of Manipur. 10. Sanjhi – Celebrated in Punjab. 11. Gudi Padwa – Marathi New Year festival. 12. Gombe Habba – A doll festival celebrated during Navaratri in Karnataka. 13. Uzhavar Thirunal – Farmers festival in Tamil Nadu. 14. Sarhul – Celebrated in Jharkhand. 15. National Unity Day – 31 Oct 16. Thaipusam – Celebrated in Tamil Nadu. 17. Onam – A ten-day festival in Chingam month (Aug/Sep) in Kerala. 18. Bushu, Yemshe, Tokhu Emong – Tribal festivals of Nagaland. 19. Dhrang Fair – A two-day festival in Gujarat honoring Saint Mekran Dada. 20. Pongal – Harvest festival dedicated to the Sun God in Tamil Nadu. 21. Junbeel Mela – A unique barter festival in Assam. 22. Hornbill Festival – Celebrated in Nagaland. 23. Bohag Bihu (Rongali Bihu) – Assamese New Year festival. 24. Raja Festival – Celebrates womanhood in Odisha. 25. Losar Festival – Celebrated by the Monpas in Arunachal Pradesh. 26. Kullu Dussehra – Local name of Dussehra in Himachal Pradesh. 27. Konark Festival – Celebrated in Odisha. 28. Bihula Festival – Worship of serpent goddess Mansa in Bengal, Bihar, Jharkhand. 29. Shigmo Festival – Celebrated in Goa. 30. Hornbill Festival – Begins on 1st December in Nagaland. 31. Republic Day – Celebrated on 26th January. 32. Halda Festival – Celebrated in Himachal Pradesh. 33. Good Friday – Mainly observed by the Christian community. 34. Dhanu Yatra – Odisha’s open-air theatre festival based on Krishna Leela. 35. Reh and Boori Boot – Predominantly celebrated in Arunachal Pradesh. 36. Bohag Bihu – Assamese New Year and harvest festival.

Dances Asked in SSC GD 1. Shovana Narayan is associated with Kathak. 2. Bharatanatyam is known for Ekaharya (one dancer, many roles). 3. Kuchipudi originated in Kuchelapuram, Krishna district. 4. Manipuri dance uses ‘Pung’ as the main instrument. 5. 'Roppi' is a folk dance from Arunachal Pradesh. 6. Karnataka started the 'Shantala Natya Sri Award' in 1995. 7. Bhangra is a popular dance form of Punjab. 8. Shovana Narayan performs Kathak. 9. Bharatanatyam originated in Tamil Nadu. 10. Chhau dance was recognized as UNESCO Intangible Heritage in 2010. 11. Guru Chemancheri Kunhiraman Nair was associated with Kathakali. 12. The Tanjore Quartet codified Bharatanatyam in the 19th century. 13. Kathakali is derived from 'Balarama Bharatam' and 'Hastalakshana Deepika'. 14. Kathakali integrates four aspects of Abhinaya and 'Nritta', 'Nritya', 'Natya'. 15. Rukmini Devi Arundale is associated with Bharatanatyam. 16. Popir dance is performed by the Galo tribe of Arunachal Pradesh. 17. Mayurbhanj Chhau is a tribal dance of Odisha. 18. ‘Ladaladi’ is a Bhil folk dance featuring a bride and groom lifted on shoulders. 19. Yamini Krishnamurthy was 'Asthana Narthaki' of Bharatanatyam & Kuchipudi. 20. Sangeet Natak Akademi decided to give 9 dance awards in 2011. 21. Kelucharan Mohapatra is not associated with Kathakali. 22. Thanjavur Quartet revived and codified Bharatanatyam. 23. Kathak is the principal classical dance of Northern India. 24. Rigveda mentions dance (Nrti) and danseuse (Nrtu). 25. Ishira & Maulik Shah received the Sangeet Natak Akademi award in 2018 for Kathak. 26. Rajashree Shirke was awarded for Kathak. 27. T Balasaraswati performed Bharatanatyam. 28. Sattriya dance developed in Assam monasteries. 29. Sonal Mansingh received Padma Vibhushan in 2003. 30. Kunbi tribal dance is performed in Goa. 31. Narthaki Nataraj is India's first transgender Bharatanatyam dancer, Padma Shri 2019. 32. Srimanta Sankardev introduced Sattriya dance in Assam. 33. Sankardev was the founder of Sattriya dance. 34. Kathak dancers Kamalini & Nalini Asthana (Padma Shri 2022) belong to Uttar Pradesh. 35. Rukmini Devi Arundale founded Kalakshetra Institute in Chennai. 36. Sattriya dancer Oli Jerang belongs to Arunachal Pradesh. 37. T Balasaraswati, a Padma Vibhushan awardee, was a Bharatanatyam dancer. 38. Bharati Shivaji, a Padma Shri recipient, was associated with Mohiniyattam. 39. Villu Pattu is a folk dance of Tamil Nadu. 40. Birju Maharaj received Padma Vibhushan in 1986. 41. 'Abhinaya Darpana' by Nandikesvara is a key text for Bharatanatyam. 42. Mohiniattam belongs to Kerala. 43. Saroja Vaidyanathan (Padma Shri & Padma Bhushan) was a Bharatanatyam dancer. 44. Sarayu Sai won the Natya Kalajyoti Award (2006) for Bharatanatyam. 45. CV Chandrasekhar (Padma Bhushan) performed Bharatanatyam. 46. Nritya Chudamani Award is given by Sri Krishna Gana Sabha. 47. The Kinnauris of Himachal Pradesh perform Losar Shona Chuksam dance. 48. Hampi Dance Utsav is celebrated in Karnataka. 49. Mudiyettu, a ritual dance drama of Kerala, was listed as UNESCO Intangible Heritage in 2010. 50. Kalamandalam Gopi, a Padma Shri awardee, is famous for Kathakali. 51. Giddha is a folk dance of Punjab. 52. Raas-Leela symbolizes Manipuri dance based on Radha-Krishna love. 53. Mohiniattam evolved under King Swathi Thirunal of Travancore. 54. Puru Dadheech received the Sangeet Natak Akademi Award in 2018 for Kathak. 55. Kathak belongs to Northern India. 56. Mrinalini Sarabhai won a gold medal in 1968 for choreography from Mexico. 57. Swimmer Srihari Nataraj belongs to Karnataka. 58. Kalamandalam Kshemavathy Pavithran, a Mohiniyattam dancer, belongs to Kerala. 59. Tapan Kumar Patnaik won the Sangeet Natak Akademi Award in 2018 for Chhau dance. 60. Andhra Pradesh presents the Nandi Award for best choreographer annually. 61. Sangeet Natak Akademi Award includes ₹1,00,000, an Angavastram, and a Tamrapatra.

Music related Questions asked in SSC GD 1. Lakshmi Vishwanathan – Bharatanatyam dancer, Natya Kalanidhi Awardee. 2. 'Natyashastra' – Ancient text on performing arts by Sage Bharata. 3. Sangeet Natak Akademi – Established in 1953 for music, dance, and drama. 4. Ustad Bismillah Khan Yuva Puraskar awarded in Dance, theatre and Music 5. Lalgudi Gopala Jayaraman – Carnatic music maestro, Padma Bhushan awardee. 6. Muthuswami Dikshitar – Carnatic music composer and poet. 7. RD Burman – Introduced Rock 'n' Roll to Hindi music. 8. Yella Venkateswara Rao – Indian mridangam percussionist. 9. Mukund Nayak – Sangeet Natak Akademi Award 2017 for Folk Music. 10. Ramnad V. Raghavan – Mridangam exponent. 11. Jagjit Singh – Renowned Ghazal singer. 12. Sikkil Mala Chandrasekhar – Flute artist. 13. Pt. Ravi Shankar – Sitar player, collaborated with The Beatles. 14. RD Burman – First to introduce Brazilian Bossa Nova in Hindi music. 15. Bholanath Prasanna – Flute maestro. 16. Zakir Hussain – Tabla player from Punjab Gharana. 17. Rashid Khan – Classical vocalist, Rampur-Sahaswan Gharana. 18. Arnab Chakrabarty – Sarod artist. 19. Bombay Jayashri – Carnatic singer, honored by Tamil Nadu. 20. Dakshinamurthy Pillai – Mridangam player. 21. Emani Sankara Sastry – Carnatic Veena player, innovator of contact microphones. 22. Muthuswami Dikshitar – Composer of Carnatic music. 23. Shankar Mahadevan – 'Breathless' song released in 1998. 24. Bhupinder Singh – Sangeet Natak Akademi Award 2015 for Sugam Sangeet. 25. Rattan Mohan Sharma – Mewati Gharana artist. 26. AR Rahman – Music composer of Slumdog Millionaire. 27. Anil Srinivasan – Indian pianist. 28. Balakrishnabuwa Ichalkaranjikar – Gwalior Gharana exponent. 29. Ustad Asad Ali Khan – Rudra Veena maestro. 30. Kumar Sanu – Guinness record for 28 songs recorded in a day (1993). 31. MM Keeravani – Composer of Naatu Naatu (RRR). 32. Kishore Kumar – Did not sing Yaari Hai Imam Mera Yaar Meri Zindagi. 33. Badshah – Stage name of rapper Aditya Prateek Singh Sisodia. 34. Neha Kakkar – Female singer of London Thumakda. 35. Neeti Mohan – Rose to fame with Ishq Wala Love (2012). 36. Rahul Sipligunj & Kalabhairava – Singers of Naatu Naatu, Golden Globe-winning song. 37. Dalchand Sharma – Pakhawaj exponent, Nathdwara Gharana. 38. Pt. Ishwari Prasad – Associated with Lucknow Kathak Gharana. 39. Shruti Sadolikar – Jaipur-Atrauli Gharana classical singer. 40. MS Subbulakshmi – Carnatic singer, performed at the UN. 41. Ananda Shankar – Known for Streets of Calcutta & Dancing Drums. 42. Bismillah Khan – Shehnai maestro, born in Dumraon, Bihar. 43. Ustad Ali Akbar Khan – Composer of Raga Laswanti. 44. Begum Akhtar – Titled Queen of Ghazals. 45. Bismillah Khan – Performed at Red Fort on India’s Independence (1947). 46. SP Balasubrahmanyam – Recipient of Padma Shri, Padma Bhushan & Padma Vibhushan. 47. Pt. Birju Maharaj – Filmfare Best Choreography Award (2016) for Bajirao Mastani. 48. VP & Shanta Dhananjayan – Sangeetha Kala Vibhushan awardees (2020). 49. Sankirtana – Manipur's traditional dance and singing form, UNESCO-listed in 2013.

PYQ (Discoveries and Inventions in Science) 1. Henry's Law (C = KPgas) was formulated in 1803 by William Henry. 2. The principle of holography was developed in 1947 by Dennis Gabor. 3. The composition of water was discovered in 1784 by Henry Cavendish. 4. Philipp Lenard observed radiation from a low-pressure gas tube under voltage. 5. Bose-Einstein Condensate (BEC) was predicted in 1924 by Albert Einstein. 6. Satyendra Nath Bose provided the quantum formulation for BEC. 7. The VSEPR model was redefined in 1957 by Nyholm and Gillespie. 8. Urea was synthesized from ammonium cyanate by Friedrich Wöhler. 9. The positron was discovered by Carl Anderson. 10. John Dalton published Atomic Theory in 1808. 11. The role of oxygen in combustion and respiration was discovered by Lavoisier. 12. Argon was discovered in 1894 by William Ramsay and Lord Rayleigh. 13. Nucleophilic substitution reactions were proposed in 1937 by Ingold and Hughes. 14. The nebular hypothesis was revised in 1950 by Otto Schmidt. 15. Molecular chirality was discovered in 1848 by Louis Pasteur. 16. The relationship between molecular geometry and valence electrons was explained by Sidgwick and Powell. 17. Pauling scale was introduced in 1932. 18. Ether was discovered accidentally in 1850 by Alexander W. Williamson. 19. Mendelevium was discovered in 1955 by Glenn T. Seaborg. 20. "A New System of Chemical Philosophy" was published in 1808 by John Dalton. 21. The first Bose-Einstein Condensate (BEC) of Rb-87 atoms was produced in 1995 by Eric Cornell and Carl Wieman. 22. The ring structure of benzene was visualized in 1865 by Friedrich August Kekulé 23. Peter Debye won the 1936 Nobel Prize for studies on molecular structure and dipole moments. 24. Neon was discovered in 1898 by William Ramsay and Morris Travers. 25. Benzene was discovered by Michael Faraday. 26. The first scientist to observe trends in element properties was Johann Döbereiner. 27. The first reliable gas property measurements were made in 1662 by Robert Boyle. 28. The Hückel rule (4n+2) for aromaticity was proposed by Erich Hückel. 29. Diborane reactions with aldehydes and ketones were discovered by H.C. Brown. 30. The first Bose-Einstein condensate was produced by Eric Cornell and Carl Wieman. 31. The Law of Octaves was propounded in 1865 by John Newlands.

PYQ (Discoveries and Inventions in Science) 1. Neutron was discovered by James Chadwick in 1932. 2. Geiger and Nuttall formulated the empirical relationship between alpha decay half-life and energy of emitted alpha particles in 1911. 3. Frederick Soddy discovered Isotopes. 4. Lise Meitner coined the term nuclear fission. 5. Vladimir Prelog won the Nobel Prize in 1975 for research in stereochemistry of organic molecules. 6. John Dalton proposed the atomic theory in 1808. 7. Antoine Lavoisier published Methods of Chemical Nomenclature in 1787. 8. Glenn T. Seaborg discovered Plutonium in 1940. 9. Hermann Kolbe developed a method for acetic acid synthesis in 1845. 10. Friedrich Wöhler was the first to isolate pure beryllium. 11. Edwin McMillan & Glenn T. Seaborg discovered Transuranium elements. 12. Joseph Priestley discovered Oxygen in 1774. 13. Gay Lussac proposed the Law of Gaseous Volumes in 1808. 14. Paul Dirac introduced the concept of antiparticles in 1930. 15. Alfred Werner first understood the molecular structures of inorganic substances in 1893. 16. Sir William Ramsay discovered Helium in 1895. 17. Jacob Berzelius discovered Cerium, Thorium, and Selenium. 18. Georg Wittig & Herbert C. Brown developed Boron & Phosphorus-based reagents for organic synthesis. 19. MS Livingston & Ernest Lawrence co-invented the Cyclotron in 1934. 20. Harold C. Urey discovered Heavy Hydrogen (Deuterium). 21. Robert Boyle made the first reliable measurement of gas properties in 1662. 22. Charles Janet developed the Left-Step Periodic Table (LSPT) in the 1920s. 23. Joseph Proust proved the Law of Definite Proportions. 24. Ernest Rutherford published the Gold Foil Experiment results in 1911. 25. John Dalton proposed Dalton’s Law of Partial Pressures for gases. 26. Friedrich Wöhler synthesized Urea from inorganic compounds. 27. Sir J.J. Thomson proposed the Plum Pudding Model. 28. Antoine Lavoisier published Method de nomenclature for modern chemical naming. 29. Frederick Sanger & Barry Sharpless won the Nobel Prize in Chemistry twice. 30. Lithium was discovered in 1817. 31. Marie Curie discovered Radium. 32. John Dalton provided the basic theory of matter. 33. Henry Moseley proved that atomic number is more fundamental than atomic mass. 34. John Dalton proposed the Law of Conservation of Mass & Definite Proportions. 35. Johann Wolfgang Döbereiner grouped elements into Triads in 1817. 36. Daniel Rutherford discovered Nitrogen in 1772. 37. Henry Cavendish discovered Hydrogen in 1766. 38. Antoine Lavoisier formulated two laws of chemical combination. 39. Satyendra Nath Bose contributed to Bose-Einstein Condensate (fifth state of matter). 40. John Newlands proposed the Law of Octaves in 1865. 41. Robert Brown discovered Brownian Motion in 1827. 42. Johann Wolfgang Döbereiner observed Platinum as a catalyst and Triads of elements. 43. Dr. Soren Sorensen developed the pH scale. 44. Ernest Rutherford discovered the atomic nucleus. 45. MS Livingston co-invented the Cyclotron with Ernest Lawrence. 46. Harold C. Urey discovered the Hydrogen Isotope and won the Nobel Prize in 1934. 47. Technetium was the first artificially produced element. 48. Arthur Holmes used radioactivity to calculate Earth’s age in 1910. 49. Lothar Meyer plotted atomic volume against atomic weight. 50. Charles Goodyear discovered vulcanization of rubber. 51. Berthelot synthesized Methane in 1856. 52. Carl Anderson discovered the Positron in 1932. 53. Niels Bohr proposed the Quantum Model of the Hydrogen Atom in 1913

Chemistry One liners 1. Silver iodide (AgI) – Used for artificial rain. 2. Blue vitriol (CuSO₄·5H₂O) (Copper(II) sulfate pentahydrate) – Used as a fungicide for fruit trees. 3. Red ink – Prepared from eosin (C₂₀H₈Br₄O₅). 4. Zinc phosphide (Zn₃P₂) – Used as a rodenticide (rat poison). 5. Tape recorder tape – Polished by ferromagnetic powder (Fe₃O₄ - Magnetite or γ-Fe₂O₃ - Maghemite). 6. Main constituents of pearl – Aragonite (CaCO₃ - Calcium carbonate) and conchiolin. 7. Powerful eye irritant in smoke – Peroxyacetyl nitrate (PAN, C₂H₃NO₅). 8. Ethylene dibromide (C₂H₄Br₂) (1,2-Dibromoethane) in petrol – Helps in eliminating lead oxide (PbO). 9. Faraday constant – 96485.3329 C/mol. 10. Chemical formula of sapphire – Al₂O₃ (Aluminum oxide - Corundum). 11. Liquid Gold – Petroleum (CₙHₘ mixture - Crude oil). 12. 'Nobel Oil' explosive – Tetranitroglycerin (T.N.G, C₃H₅N₄O₁₂ - Similar to Nitroglycerin). 13. Mustard gas (C₄H₈Cl₂S) (Sulfur mustard) – Used in World War I. 14. Chemical formula of Gypsum – CaSO₄·2H₂O (Calcium sulfate dihydrate - Plaster of Paris precursor). 15. Macronutrients in inorganic fertilizers – Nitrogen (N), Phosphorus (P), Potassium (K) – (NPK fertilizers). 16. Composition of Nitrolim (fertilizer) – Calcium carbide (CaC₂) and nitrogen (N₂). 17. First artificial biological chemical – Urea (CH₄N₂O - Carbamide).

Chemistry One liners revision 1. Father of Modern Chemistry – Antoine Lavoisier 2. CNG – Compressed Natural Gas (Methane (CH₄) – Around 85-98%) 3. Acid rain is caused by – Nitrogen and Sulphur oxides 4. Most abundant inert gas in atmosphere – Argon 5. Uranium, Thorium, Radium – Radioactive fuels 6. Formula of Aluminium Oxide – Al₂O₃ 7. Formula of Hydrogen Sulphide – H₂S 8. Purity of Primary Gold – 24 carat 9. Most abundant element in universe – Hydrogen 10. Water vapour, CO₂, Methane – Greenhouse gases 11. Primary constituent of Pearl – Calcium Carbonate 12. Bhopal Gas Tragedy cause – Methyl isocyanate 13. Ozone layer depletion cause – Chlorofluorocarbons (CFCs) 14. Methane gas is formed by – Anaerobic fermentation of biomass 15. Kidney stone compound – Calcium Oxalate (CaC₂O₄) 16. Cobalt-60 is used for – Cancer treatment 17. Black & white photography compound – Silver Bromide (AgBr) 18. Gas mixture used by deep-sea divers – Helium + Oxygen 19. Colour of Hydrogen gas – Colourless 20. Water molecules in CuSO₄ crystals – 5 21. Liquid for storing biological tissues – Liquid Nitrogen

Chemistry One liners for revision 1. The thinnest material in the world - Graphene. 2. Element used to treat Goitre - Iodine. 3. Temperature required to make Plaster of Paris from gypsum - 100°C. 4. Densest naturally occurring element - Osmium. 5. WHO recommends less than 5g of salt intake per day to prevent hypertension & cardiovascular diseases. 6. Browning of paper in old books - Foxing. 7. Heavy water contains - Deuterium. 8. Heaviest isotope of Hydrogen - Tritium. 9. RDX is an explosive - Royal Demolition eXplosive. 10. Indian scientists developed Poly-oxime gel in October 2018. 11. Poly-oxime gel protects farmers from toxic pesticides. 12. Attraction between molecules of the same substance - Cohesive force. 13. Boiling point of liquid nitrogen - (-196°C). 14. Fuels used in cryogenic engines - Liquid oxygen & liquid hydrogen. 15. NPK stands for - Nitrogen, Phosphorus, Potassium. 16. Firemen’s uniforms are coated with - Melamine plastic. 17. Cobalt isotope is used in cancer treatment. 18. Mixture used to purify gold - Aqua regia. 19. Preservatives for pickles - Sodium benzoate, Sodium metabisulphite. 20. India's first synthetic drug - Methaqualone was developed by CSIR. 21. Hydrogen has the highest calorific value - 150,000 kJ/kg. 22. Heat energy produced by 1 kg of fuel on complete combustion - Calorific value. 23. Chocolates can be harmful due to high Nickel content. 24. Largest component of natural gas - Methane. 25. Major pollutant in photochemical smog - Ozone (O3). 26. Drying of milk of lime (whitewashing) occurs due to CO2 in air. 27. Quantity of substance containing same number of particles as in 12g of C-12 - Mole. 28. Mass of one mole of a substance - Molar mass. 29. Alkali is a base that dissolves in water. 30. Adding electrons to an atom forms an - Anion. 31. Chemical used to control algae - Copper sulfate. 32. Cation and anion in NaCl - Na+ & Cl−. 33. Chemically, rust is - Hydrated ferric oxide. 34. Iodine turns a peeled potato - Black. 35. Electronegativity measures an atom’s ability to - Attract electrons. 36. Transition metals are paramagnetic due to - Unpaired electrons. 37. Rate of evaporation increases with - Surface area & temperature. 38. Froth floatation process is based on - Wetting of ore particles 39. Butter is separated from cream using - Centrifugation. 40. Highly toxic, odorless, tasteless, colorless gas - Carbon monoxide. 41. Ammonium ion (NH4+) is a - Cation. 42. Molecular mass of Ammonia (NH3) - 17 g/mol. 43. Biogas contains - Methane, Hydrogen sulfide, Carbon dioxide. 44. Chemical formula of Calcium phosphide - Ca3P2.

Chemistry One liners revision 1. First man-made plastic & bad conductor of heat – Bakelite 2. Chemical formula of sucrose – C₁₂H₂₂O₁₁ 3. Sucrose is a – Natural sweetener 4. Fibre used to make rayon cloth – Cellulose 5. Pectin is mainly composed of – Galacturonic acid 6. Examples of monosaccharides – Fructose & Glucose 7. Examples of polysaccharides – Starch, Cellulose & Glycogen 8. Examples of oligosaccharides – Sucrose, Lactose & Maltose 9.Pyruvate is generated through – Glycolysis (formed by glucose breakdown) 10. Examples of natural fibres – Linen, Cotton & Jute 11. Amino acids link together to form – Proteins 12. Process of converting sugar into alcohol – Fermentation 13. Sugar responsible for sweetening in fruits – Fructose 14. Major sugars in sugarcane – Glucose & Fructose 15. Examples of synthetic fibres – Nylon & Polyester 16. Rayon is an example of – Man-made fibre, Man-made fibre obtained from wood pulp 17. First fully synthetic fibre – Nylon 18. Rayon is also known as – Artificial silk 19. Bakelite is a – Thermosetting plastic 20. Polymer that undergoes permanent change when heated – Thermosetting plastic 21. Polymer that does not undergo permanent change when heated – Thermoplastic plastic 22. Examples of thermoplastics – Polythene & PVC 23. Full form of PVC – Poly Vinyl Chloride 24. Monomer used for the synthesis of Nylon 6 – Caprolactam 25. Fibre used to make bulletproof jackets – Kevlar

⭐ The Reserve Bank of India has raised the maximum ATM withdrawal fee banks from 21 to Rs 23, starting May 1, 2025. ~ ATM Withdrawals to Get Costlier from May 1 as RBI Approves Fee Hike Changes ATM Withdrawal ₹19 per transaction (up from ₹17) & Fee for Cash New Fee for Balance Inquiry ₹7 per transaction (up from ₹6)