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  Which of these sounds would you associate with the heart? A Tring Tring B Tap Tap C Click Click D Dhak Dhak In 2013, where did the natural calamity known as Himalayan tsunami occur? A Uttrakhand B Arunachal Pradesh C Jammu and Kashmir D Sikkim In the Ramayana, Which demon impersonated Rama's voice, screaming, 'Lakshman! Help me'? A Surpanakha B Khara C Maricha D Dushana Who is the only leader to be elected Prime Minister of Pakistan three times? A Syed Yousaf Raza Gillani B Benazir Bhutto C Liaqat Ali Khan D Nawaz Sharif The black widow, which eats the male counterpart after mating, as a female species of which animal? A Sloth B Ant C Spider D Termite Answer all these 5 questions and comment down in comment box

  The vaquita is a species of porpoise endemic to the northern end of the Gulf of California in Baja California, Mexico. Averaging 150 cm or 140 cm in length, it is the smallest of all living cetaceans. Vaquita, the world's rarest marine mammal, is on the edge of extinction. The plight of cetaceans—whales, dolphins, and porpoises—as a whole is exemplified by the rapid decline of the vaquita in Mexico, with about 10 individuals remaining. This little porpoise wasn't discovered until 1958 and a little over half a century later, we are on the brink of losing them forever. Vaquita are often caught and drowned in gillnets used by illegal fishing operations in marine protected areas within Mexico's Gulf of California. The population has dropped drastically in the last few years. The vaquita has a large dark ring around its eyes and dark patches on its lips that form a thin line from the mouth to the pectoral fins. Its top—the dorsal surface—is dark gray, its sides are pale gray, ...

The ear is a complex and intricate sensory organ responsible for both hearing and balance. It plays a crucial role in our daily interactions with the world around us. Comprising three main parts - the outer ear, middle ear, and inner ear - it converts sound waves into electrical signals that our brain interprets as sound, while also helping us maintain equilibrium and spatial orientation. Outer Ear: The outer ear consists of the visible part known as the pinna or auricle and the ear canal. The pinna helps in collecting and directing sound waves into the ear canal. Sound waves travel through the ear canal, where they eventually reach the eardrum (tympanic membrane). Middle Ear : Beyond the eardrum lies the middle ear, an air-filled cavity. Three tiny bones called the ossicles, are housed here: the malleus (hammer), incus (anvil), and stapes (stirrup). These bones amplify and transmit sound vibrations from the eardrum to the fluid-filled inner ear. The Eustachian tube, another important...

 OPTICAL ILLUSIONS The brain's task is to make sense of what the eyes see, and it usually gets it right. However, optical illusions can play tricks on the brain as it tries to fill any gaps in the visual information it receives.

 Cells are the basic building blocks of all living things. The human body is composed of trillions of cells. They provide structure for the body, take in nutrients from food, convert those nutrients into energy, and carry out specialized functions. Cells have many parts, each with a different function.

 The theory of relativity usually encompasses two interrelated theories by Albert Einstein: special relativity and general relativity, proposed and published in 1905 and 1915, respectively. Special relativity applies to all physical phenomena in the absence of gravity.   Physics, Special relativity, Principle of relativity Einstein's Theory of General Relativity states that ________________. Correct answer gravity and acceleration are equivalent.

 Kinematics is the branch of classical mechanics that describes the motion of points, objects and systems of groups of objects, without reference to the causes of motion (i.e., forces ). The study of kinematics is often referred to as the “geometry of motion.”

 Neutron, neutral subatomic particle that is a constituent of every atomic nucleus except ordinary hydrogen. It has no electric charge and a rest mass equal to 1.67493 × 10−27 kg—marginally greater than that of the proton but nearly 1,839 times greater than that of the electron. Mass: 1.67492749804(95)×10−27 kg; 939.56542052(54) MeV/c2; 1.00866491588(49) Da Electric charge: 0 e; (−2±8)×10−22 e (experimental limits) Interactions: gravity, weak, strong, electromagnetic Composition: 1 up quark, 2 down quarks Statistics: fermionic Classification: baryon Antiparticle: antineutron

 Antiparticle, subatomic particle having the same mass as one of the particles of ordinary matter but opposite electric charge and magnetic moment. Thus, the positron (positively charged electron) is the antiparticle of the negatively charged electron. Every type of particle has a corresponding antiparticle, for example; the positron is the antiparticle of the electron. the antiproton is the antiparticle of the proton. the antineutron is the antiparticle of the neutron. the antineutrino is the antiparticle of the neutrino.

 Electron revolves around the nucleus of an atom  The electron is a subatomic particle, whose electric charge is negative one elementary charge. Electrons belong to the first generation of the lepton particle family, and are generally thought to be elementary particles because they have no known components or substructure. Discovered: J. J. Thomson (1897) Symbol: e−, β− Magnetic moment: −1.00115965218091(26) μB Electric charge: −1 e; −1.602176634×10−19 C; −4.80320451(10)×10−10 esu Generation: First Family: Lepton Antiparticle: Positron

 A proton is a subatomic particle, symbol p or p⁺ , with a positive electric charge of +1e elementary charge and a mass slightly less than that of a neutron. Protons and neutrons, each with masses of approximately one atomic mass unit, are jointly referred to as "nucleons".  Mass: 1.67262192369(51)×10−27 kg; 938.27208816(29) MeV/c2; 1.007276466621(53) Da Symbol: p, p+, N+, 1; 1H+ Electric charge: +1 e; 1.602176634×10−19 C Charge radius: 0.8414(19) fm Composition: 2 up quarks (u), 1 down quark (d) Electric dipole moment: < 5.4×10−24 e⋅cm Electric polarizability: 1.20(6)×10−3 fm3

 Atomic nucleus  The atomic nucleus is the small, dense region consisting of protons and neutrons at the center of an atom, discovered in 1911 by Ernest Rutherford based on the 1909 Geiger–Marsden gold foil experiment.  They are in middle of an atom

 A nucleus is a membrane-bound organelle that contains the cell's chromosomes. Pores in the nuclear membrane allow for the passage of molecules in and out of the nucleus.

 An atom is a particle of matter that uniquely defines achemical element. An atom consists of a central nucleus that is usually surrounded by one or more electrons. Each electron is negatively charged. The nucleus is positively charged, and contains one or more relatively heavy particles known as protons and neutrons. Atom is the smallest particle  It can't be break down or destroyed

 Carbonization is the conversion of organic matters like plants and dead animal remains into carbon through destructive distillation.  Coal is formed from it

 Coal is a fossil fuel formed from decomposition of dead plants and animals  The process is called carbonization Coal is a combustible black or brownish-black sedimentary rock, formed as rock strata called coal seams. Coal is mostly carbon with variable amounts of other elements, chiefly hydrogen, sulfur, oxygen, and nitrogen.

 A fossil fuel is a fuel formed by natural processes, such as anaerobic decomposition of buried dead organisms, containing organic molecules originating in ancient photosynthesis that release energy in combustion.

Petroleum, also called crude oil, is  a fossil fuel . Like coal and natural gas, petroleum was formed from the remains of ancient marine organisms, such as plants, algae, and bacteria. Today, petroleum is found in vast underground reservoirs where ancient seas were located.

 An RDBMS, or relational database management system, is the software that gives users the ability to update, query and administer a relational database. Structured Query Language (SQL) is typically the standard programming language used to access the database. Example- MS Access

 Investment To invest is to allocate money with the expectation of a positive benefit/return in the future. In other words, to invest means owning an asset or an item with the goal of generating income from the investment or the appreciation of your investment which is an increase in the value of the asset over a period of time. 

 A cryptocurrency, crypto-currency, or crypto is a collection of binary data which is designed to work as a medium of exchange wherein individual coin ownership records are stored in a ledger which is a computerized database using strong cryptography to secure transaction records, to control the creation of additional coins, and to verify the transfer of coin ownership.

 Water pollution is the release of substances into bodies of water that makes water unsafe for human use and disrupts aquatic ecosystems. Water pollution can be caused by a plethora of different contaminants, including toxic waste, petroleum, and disease-causing microorganisms.

 Water is very useful and important  It's the essential for survival  There are soamy uses of water including drinking, washing, bathing, cooking, cleaning, construction etc  It's limitless  Water is very important 

 Water 💧  water, a substance composed of the chemical elements hydrogen and oxygen and existing in gaseous, liquid, and solid states. It is one of the most plentiful and essential of compounds. A tasteless and odourless liquid at room temperature, it has the important ability to dissolve many other substances. It's about 71% of earth's surface  97% is saline water that's unfit for human consumption  3% is freshwater In that only 1% is available for our uses in form of lakes, rivers Water is very precious, use it properly 

 Landfills  They are places far away from places where people live  A landfill site, also known as a tip, dump, rubbish dump, garbage dump, or dumping ground, is a site for the disposal of waste materials. Landfill is the oldest and most common form of waste disposal, although the systematic burial of the waste with daily, intermediate and final covers only began in the 1940s.

 Land Land is the solid surface of Earth that is not permanently submerged in water. Most but not all land is situated at elevations above sea level and consists mainly of crustal components such as rock, sand, soil, and sometimes ice.

 Terrestrial animals are animals that live predominantly or entirely on land, as compared with aquatic animals, which live predominantly or entirely in the water, or amphibians, which rely on a combination of aquatic and terrestrial habitats.

 Harmful effects of plastic   Plastics are very harmful because it's non degredable  Harmful effects of plastic Chemicals in plastic-like lead, cadmium and mercury directly can come in contact with the humans. These toxins can cause cancers, congenital disabilities, immune system problems and childhood development issues. The other toxins like BPA or health-bisphenol-A are found in plastic bottles and food packaging materials. they can harm aquatic and terrestrial life also,  they pollute the environment  Even they can't be decomposed by microorganisms   So they stay as it is for long time Thus plastics are harmful

 Plastics is the term commonly used to describe a wide range of synthetic or semi-synthetic materials that are used in a huge and growing range of applications. The raw materials used to produce plastics are natural products such as cellulose, coal, natural gas, salt and, of course, crude oil. FAQ  What are plastics made of? Plastics are made from natural materials such as cellulose, coal, natural gas, salt and crude oil through a polymerisation or polycondensation process. Plastics are derived from natural, organic materials such as cellulose, coal, natural gas, salt and, of course, crude oil. What are the 7 types of plastic? The Basics On 7 Common Types of Plastic 1) Polyethylene Terephthalate (PET or PETE) 2) High-Density Polyethylene (HDPE) 3) Polyvinyl Chloride (PVC or Vinyl) 4) Low-Density Polyethylene (LDPE) 5) Polypropylene (PP) 6) Polystyrene (PS or Styrofoam) 7) Other.

 Endangered species are those whose number are diminishing and facing danger of extinction   We should save them Examples - Bengal tiger, panda  etc An endangered species is a species that is very likely to become extinct in the near future, either worldwide or in a particular political jurisdiction. Endangered species may be at risk due to factors such as habitat loss, poaching and invasive species

 The species whose none of their species is left and vanished are extinct species  Extinction is the termination of a kind of organism or of a group of kinds, usually a species. The moment of extinction is generally considered to be the death of the last individual of the species, although the capacity to breed and recover may have been lost before this point.

 How did the passenger pigeon go extinct? People ate passenger pigeons in huge amounts, but they were also killed because they were perceived as a threat to agriculture. As Europeans migrated across North America, they thinned out and eliminated the large forests that the pigeons depended on forest.  The last passenger pigeon died in the Cincinnati Zoo in 1914.

 Dodo Birds The dodo is an extinct flightless bird that was endemic to the island of Mauritius, east of Madagascar in the Indian Ocean. The dodo's closest genetic relative was the also-extinct Rodrigues solitaire, the two forming the subfamily Raphinae of the family of pigeons and doves.

  The Taj Mahal, is an ivory-white marble mausoleum on the right bank of the river Yamuna in the Indian city of Agra. It was commissioned in 1632 by the Mughal emperor Shah Jahan to house the tomb of his favourite wife, Mumtaz Mahal; it also houses the tomb of Shah Jahan himself.

  Australia Country in Oceania Description Description Australia, officially the Commonwealth of Australia, is a sovereign country comprising the mainland of the Australian continent, the island of Tasmania, and numerous smaller islands. It is the largest country by area in Oceania and the world's sixth-largest country.

  France Country in Europe Description Description France, in Western Europe, encompasses medieval cities, alpine villages and Mediterranean beaches. Paris, its capital, is famed for its fashion houses, classical art museums including the Louvre and monuments like the Eiffel Tower. The country is also renowned for its wines and sophisticated cuisine. Lascaux’s ancient cave drawings, Lyon’s Roman theater and the vast Palace of Versailles attest to its rich history.

  Germany Country in Europe Description Description Germany is a Western European country with a landscape of forests, rivers, mountain ranges and North Sea beaches. It has over 2 millennia of history. Berlin, its capital, is home to art and nightlife scenes, the Brandenburg Gate and many sites relating to WWII. Munich is known for its Oktoberfest and beer halls, including the 16th-century Hofbräuhaus. Frankfurt, with its skyscrapers, houses the European Central Bank.  

  United Kingdom Country in Europe Description Description The United Kingdom, made up of England, Scotland, Wales and Northern Ireland, is an island nation in northwestern Europe. England – birthplace of Shakespeare and The Beatles – is home to the capital, London, a globally influential centre of finance and culture. England is also site of Neolithic Stonehenge, Bath’s Roman spa and centuries-old universities at Oxford and Cambridge.  

  Canada Country in North America Description Description Canada is a country in North America. Its ten provinces and three territories extend from the Atlantic to the Pacific and northward into the Arctic Ocean, covering 9.98 million square kilometres, making it the world's second-largest country by total area.

  United States Country in North America Description Description The U.S. is a country of 50 states covering a vast swath of North America, with Alaska in the northwest and Hawaii extending the nation’s presence into the Pacific Ocean. Major Atlantic Coast cities are New York, a global finance and culture center, and capital Washington, DC. Midwestern metropolis Chicago is known for influential architecture and on the west coast, Los Angeles' Hollywood is famed for filmmaking.  

  India Country in South Asia Description Description India, officially the Republic of India, is a country in South Asia. It is the seventh-largest country by area, the second-most populous country, and the most populous democracy in the world.  Capital :  New Delhi President :  Ram Nath Kovind Population :  138 crores (2020)   World Bank Prime minister :  Narendra Modi Gross domestic product :  2.62 lakh crores USD (2020)  

  Maurya Empire Description Description The Maurya Empire was a geographically extensive Iron Age historical power in South Asia based in Magadha, founded by Chandragupta Maurya in 322 BCE, and existing in loose-knit fashion until 185 BCE.

  Medicine Description Description Medicine is the science and practice of caring for a patient, managing the diagnosis, prognosis, prevention, treatment, palliation of their injury or disease, and promoting their health

  Oncology Branch of medicine Description Description Oncology is a branch of medicine that deals with the prevention, diagnosis, and treatment of cancer. A medical professional who practices oncology is an oncologist. The name's etymological origin is the Greek word ὄγκος, meaning 1. "burden, volume, mass" and 2. "barb", and the Greek word λόγος, meaning "study"

  Ladakh Region in India Description Description Ladakh is a region administered by India as a union territory, and constitutes a part of the larger Kashmir region, which has been the subject of dispute between India, Pakistan, and China since 1947.

  Delhi Sultanate Empire Description Description The Delhi Sultanate was an Islamic empire based in Delhi that stretched over large parts of the Indian subcontinent for 320 years. Five dynasties ruled over the Delhi Sultanate sequentially: the Mamluk dynasty, the Khalji dynasty, the Tughlaq dynasty, the Sayyid dynasty, and the Lodi dynasty.