SSC CHSL Tier 1 2016 General Awareness Questions with Solutions

Explanation

Under perfect competition, firms face a U-shaped average cost curve in the short run, meaning average total costs first decrease and then increase as output expands, rather than decreasing continually. Continually decreasing average total costs are a characteristic of natural monopolies or significant economies of scale, where a single large firm can produce more efficiently than many small competitive firms, which directly contradicts the definition of a perfectly competitive market.

Explanation

Mutualism is a positive biological interaction between individuals of different species in which both partners derive benefit from the association. In this mutually cooperative relationship, both organisms provide resources, protection, or services that are essential for each other's survival and growth, thereby enhancing the fitness of both species. Classic examples of mutualism include the relationship between mycorrhizal fungi and plant roots, or the interaction between flowering plants and their animal pollinators.

Explanation

Keoladeo Ghana National Park, situated in the Bharatpur district of Rajasthan, was formerly known as the Bharatpur Bird Sanctuary. Originally created as a private duck-shooting reserve for the Maharajas of Bharatpur in the late 19th century, the wetland was declared a protected sanctuary in 1971. It was subsequently designated as a National Park in 1982 and recognized as a UNESCO World Heritage Site in 1985, serving as a critical wintering ground for thousands of migratory birds, including the rare Siberian crane.

Explanation

Leonardo da Vinci painted the Mona Lisa on a poplar wood panel. During the High Renaissance in Italy, painting on wood panels made of poplar, oak, or walnut was a common and preferred technique before canvas became the dominant support. Leonardo applied coats of gesso to prepare the smooth surface of the white poplar plank before painting with oil, allowing him to achieve the delicate transitions of light and shadow characteristic of his sfumato technique.

Explanation

Selenology is the scientific study of the Moon, focusing on its physical features, geology, structure, and origin. The term is derived from Selene, the ancient Greek goddess of the Moon, combined with the suffix -logy, which means the study of a subject. It constitutes a branch of planetary science that deals specifically with lunar characteristics and mapping.

Explanation

The Pacific Ocean is the largest and deepest ocean basin on Earth. It covers more than 30% of the Earth's surface, spanning approximately 165 million square kilometers, which is larger than the total land area of all the continents combined. Its average depth is about 4,280 meters, and it contains the deepest point on Earth, the Mariana Trench, which plunges to a maximum depth of nearly 11,034 meters at the Challenger Deep.

Explanation

Chanakya, an ancient Indian teacher, philosopher, economist, jurist, and royal advisor, is widely identified as Kautilya or Vishnugupta. He authored the ancient Indian political treatise, the Arthashastra, which is a comprehensive guide on statecraft, economic policy, and military strategy. His guidance and political strategies were instrumental in the establishment of the Maurya Empire under Chandragupta Maurya.

Explanation

Jawaharlal Nehru, the first Prime Minister of independent India, was born on 14 November 1889 in Allahabad. His birthday is celebrated across the country as Children's Day because of his deep love and affection for children, who affectionately called him Chacha Nehru.

Explanation

The International Olympic Committee awarded the hosting rights for the 2020 Summer Olympic Games to Tokyo during the 125th IOC Session in Buenos Aires, Argentina, on September 7, 2013. Tokyo secured the majority of votes in the final round of balloting to become the official host city, making it the first city in Asia to host the Summer Games twice, after its first hosting in 1964.

Explanation

Radiocarbon dating, also referred to as carbon-14 dating, is a scientific method used to determine the age of organic materials and fossils. This technique relies on the decay of carbon-14, a radioactive isotope of carbon that is absorbed by living organisms from the atmosphere during their lifetime. Once an organism dies, it stops accumulating carbon-14, and the existing isotope begins to decay at a known, constant rate. By measuring the remaining concentration of carbon-14 in a fossil and comparing it to its half-life of approximately 5730 years, researchers can accurately estimate the elapsed time since the organism died.

Explanation

Hooke's law states that, within the elastic limit of a material, the strain produced in a body is directly proportional to the stress applied to it. Mathematically, this relationship is expressed as:

Stress ∝ Strain

Stress = E × Strain

where E is the constant of proportionality known as the modulus of elasticity or Young's modulus. Formulated by the English scientist Robert Hooke in 1676, this fundamental principle of mechanics describes the linear elastic behavior of materials under load.

Explanation

Article 356 of the Constitution of India provides for the imposition of President's Rule in a state. This provision is invoked if the President, upon receiving a report from the Governor of a State or otherwise, is satisfied that a situation has arisen in which the government of the State cannot be carried on in accordance with the provisions of the Constitution. Upon the proclamation of President's Rule under this article, the state government is suspended, and the central government directly administers the state through the Governor.

Explanation

The Planning Commission of India, established in March 1950 by a resolution of the Government of India, was headed by the Prime Minister of India as its ex-officio Chairman. The Prime Minister presided over the meetings of the Commission, which was responsible for formulating India's Five-Year Plans and directing national development strategies. Even after the Planning Commission was replaced by the NITI Aayog in January 2015, the Prime Minister continues to serve as the ex-officio Chairperson of the successor body.

Explanation

Subbaraman Vijayalakshmi became India's first Woman Grandmaster (WGM) in 2001. Representing India on the global stage, she also became the first female Indian player to hold the FIDE title of International Master (IM) in the same year. Throughout her career, she won the Indian Women's Chess Championship six times and won multiple medals for India in the Chess Olympiads, establishing herself as a pioneering figure in Indian women's chess.

Explanation

William Shakespeare wrote the famous tragedy Romeo and Juliet, which is estimated to have been written between 1591 and 1595 and published in 1597. It is one of his most popular and frequently performed plays, telling the story of two young star-crossed lovers whose deaths ultimately reconcile their feuding families, the Montagues and Capulets.

Explanation

Dynamic Data Exchange is an interprocess communication protocol developed by Microsoft that allows different applications running in a computer system to share data and send commands to one another. Under this protocol, when data changes in one application, the update is dynamically transmitted and automatically reflected in the linked application, enabling seamless real-time data transfer and integration between separate programs.

Explanation

Hanaoka Seishū was a Japanese physician and surgeon of the Edo period who is credited with the formulation of the first effective general anesthetic. In 1804, he successfully performed a partial mastectomy for breast cancer on a patient under general anesthesia using an herbal compound he created called Tsūsenkan. This herbal anesthetic, made from plants such as Datura metel and Aconitum, induced a state of general anesthesia, allowing for pain-free surgical procedures decades before the introduction of western anesthetics like ether or chloroform.

Explanation

Pneumonia is an inflammatory infection that primarily targets the lungs, specifically affecting the microscopic air sacs called alveoli. When a infection occurs, these air sacs become inflamed and fill with pus and fluid, which severely impairs gas exchange. This accumulation of fluid makes breathing difficult and painful, and it limits the amount of oxygen that can be absorbed into the bloodstream. The condition can be caused by a variety of infectious agents, including bacteria, viruses, and fungi.

Explanation

Gregor Mendel is recognized as the Father of Genetics for his pioneering hybridization experiments conducted on pea plants (Pisum sativum) between 1856 and 1863. Through his methodical research, he discovered the fundamental laws of inheritance, which include the Law of Dominance, the Law of Segregation, and the Law of Independent Assortment. His work established that traits are passed down from parents to offspring through discrete units, which are today known as genes, laying the entire foundation for the modern science of genetics.

Explanation

Lysosomes are membrane-bound organelles containing powerful digestive and hydrolytic enzymes capable of breaking down all types of biological polymers, including proteins, nucleic acids, lipids, and carbohydrates. When a cell becomes damaged, senescent, or infected, the lysosomes can rupture, releasing these digestive enzymes directly into the cytoplasm. The released enzymes then digest the entire host cell in a process known as autolysis, leading to cell death. Because of this self-destructive mechanism that removes damaged or worn-out cells, lysosomes are commonly referred to as the suicidal bags of the cell.

Explanation

The stratosphere contains the ozone layer, which is located in its lower portion between approximately 15 and 35 kilometers above the Earth's surface. This layer contains high concentrations of ozone (O₃) molecules that absorb the majority of the Sun's harmful ultraviolet (UV-B and UV-C) radiation, protecting life on Earth from its damaging effects.

Explanation

Kevlar is a high-strength, synthetic aramid fiber known for its exceptional tensile strength-to-weight ratio, which is about five times stronger than steel on an equal weight basis. Its molecular structure contains strong inter-chain hydrogen bonds and aromatic rings, which allow it to absorb and disperse the impact energy of high-velocity projectiles. This outstanding impact resistance and durability make Kevlar the primary material used in the manufacturing of bulletproof vests, combat helmets, and other ballistic protective gear.

Explanation

India Gate, originally known as the All India War Memorial, was designed by the prominent British architect Sir Edwin Lutyens. He was the chief architect responsible for designing the layout and major administrative buildings of New Delhi. The memorial, built to honor the Indian soldiers who died in the First World War and the Third Anglo-Afghan War, was designed as a triumphal arch reminiscent of the Arch of Constantine in Rome and the Arc de Triomphe in Paris.

Explanation

The lotus, scientifically known as Nelumbo nucifera, is the national flower of India. It occupies a unique and sacred position in Indian art, mythology, and culture, symbolizing purity, beauty, wealth, knowledge, and grace. Despite growing in muddy water, the lotus remains clean and untouched by its surroundings, representing a state of spiritual detachment and triumph over adversity.

Explanation

The relationship between average cost components is given by the formula:

Average Total Cost = Average Fixed Cost + Average Variable Cost

Substituting the given values into the formula:

54 = Average Fixed Cost + 36

Average Fixed Cost = 54 - 36 = 18

Total Fixed Cost is calculated by multiplying the Average Fixed Cost by the total quantity produced:

Total Fixed Cost = Average Fixed Cost × Quantity

Total Fixed Cost = 18 × 2500 = 45000

Explanation

Cyclical unemployment is directly related to the macroeconomic business cycle. During a general economic downturn or recession, the overall demand for goods and services in an economy falls. To cope with declining sales and reduced production needs, businesses lay off workers and freeze hiring. This creates a surplus of labor where the number of job seekers exceeds the number of available jobs, characterizing cyclical unemployment.

Explanation

Mesothelioma is a malignant tumor that develops in the mesothelium, which is the thin layer of tissue covering many of the body's internal organs. The most common form of this cancer is pleural mesothelioma, which specifically targets the pleura, the protective lining surrounding the lungs and chest cavity. This pleural type accounts for approximately 70% to 80% of all mesothelioma cases, primarily linked to the inhalation of asbestos fibers.

Explanation

Manganite is a manganese oxide-hydroxide mineral with the chemical formula MnO(OH). It is an important mineral source of manganese, crystallizing in the monoclinic system and typically occurring alongside other manganese oxides such as pyrolusite in hydrothermal veins or replacement deposits.

Explanation

The International Day of Yoga is celebrated annually on 21st June. This date was officially designated by the United Nations General Assembly in December 2014 following an initiative proposed by India. June 21st coincides with the summer solstice, which is the longest day of the year in the Northern Hemisphere and holds great significance in yogic science as it marks the beginning of Dakshinayana, a period considered highly supportive for spiritual practices.

Explanation

Sirius is colloquially known as the Dog Star because it is the brightest star in the constellation Canis Major, which translates to the Greater Dog in Latin. In ancient times, the rising of Sirius in the morning sky just before sunrise coincided with the hottest period of summer, leading to the term dog days of summer.

Explanation

Jupiter is the largest planet in our Solar System, with a mean radius of approximately 69,911 kilometers, which is about 11 times wider than Earth. Its volume is so immense that more than 1,300 Earths could fit inside it, placing it at the very top of the size rankings among all the planets orbiting the Sun.

Explanation

Vasco da Gama, a Portuguese explorer, successfully discovered the direct sea route from Europe to India. Commissioned by King Manuel I of Portugal to find a maritime passage to the East, he departed Lisbon in July 1497. Sailing around the Cape of Good Hope at the southern tip of Africa, he crossed the Indian Ocean and landed at Calicut (present-day Kozhikode) on the southwestern coast of India on May 20, 1498. This historic voyage bypassed overland trade routes and initiated the era of global maritime trade between Europe and Asia.

Explanation

Subhas Chandra Bose, one of the most prominent leaders of the Indian independence movement, was born on January 23, 1897, in Cuttack, Odisha. He went on to become a key figure in India's struggle against British rule, famously leading the Indian National Army (Azad Hind Fauj) and raising the slogan Jai Hind. His birth anniversary is celebrated annually across the nation as Parakram Diwas to honor his immense courage and selfless service to the country.

Explanation

Major Dhyan Chand, celebrated as one of the greatest field hockey players of all time, has not been conferred with the Bharat Ratna. He was awarded the Padma Bhushan in 1956, which is India's third-highest civilian award. Despite repeated demands and recommendations over the decades to posthumously award him the nation's highest civilian honor for his monumental contribution to Indian sports, he remains a recipient of the Padma Bhushan but not the Bharat Ratna. His birthday on August 29 is observed as National Sports Day in India.

Explanation

Angular momentum is a vector quantity because it possesses both magnitude and direction. It is defined as the cross product of the position vector r and the linear momentum vector p, mathematically represented as L = r × p. Because it is a cross product, the resulting vector has a direction perpendicular to the plane containing r and p, which is determined by the right-hand rule.

Explanation

Water exhibits a unique property known as anomalous expansion. When water is cooled from room temperature, it contracts and its density increases, just like most other liquids. However, this contraction continues only until the temperature reaches 4 °C. Below 4 °C, the hydrogen bonds between water molecules begin to form a highly ordered, open crystalline lattice structure. This structural arrangement pushes the molecules slightly further apart, causing the water to expand and its density to decrease until it freezes at 0 °C. Consequently, water achieves its minimum volume and maximum density at 4 °C.

Explanation

According to Article 80 of the Constitution of India, the representatives of each State in the Rajya Sabha are elected by the elected members of the Legislative Assembly of that State. This election is held in accordance with the system of proportional representation by means of the single transferable vote. This indirect election method ensures that the state legislative assemblies have direct participation in determining the composition of the upper house of India's Parliament, reflecting the federal structure of the nation.

Explanation

In the Indian political system and Constitution, MLA stands for Member of Legislative Assembly. Under Article 168 of the Constitution of India, every state has a state legislature, which includes a Legislative Assembly (Vidhan Sabha). The members of this assembly are directly elected by the citizens of that state from individual territorial constituencies through adult suffrage. An MLA represents their specific electoral constituency in the state legislature, participating in the lawmaking process, discussing state policies, and raising issues of public interest for a standard term of five years.

Explanation

India finished in the 67th position in the final medal tally of the Rio Olympics 2016. The nation won a total of two medals at the Games. This included a silver medal won by P. V. Sindhu in the women's singles badminton event and a bronze medal secured by Sakshi Malik in the women's freestyle 58 kg wrestling category. This performance placed India in a joint 67th position alongside Mongolia in the official medal table.

Explanation

Amish Tripathi is the author of The Secret of the Nagas, which is the second novel of his popular Shiva Trilogy. Released in 2011, the book continues the mythological fantasy story of Shiva, picking up where the first book, The Immortals of Meluha, left off, as the protagonist travels south in search of the mysterious Nagas.

Explanation

In computer architecture, word length refers to the number of bits processed by the CPU as a single unit, which is typically measured in bits (such as 16-bit, 32-bit, or 64-bit systems). Thus, the fundamental unit of measurement for a computer's word length is the bit.

Explanation

VA Shiva Ayyadurai, an Indian-American scientist, is credited with the invention of the email system. In 1978, at the age of 14, while working as a research fellow at the University of Medicine and Dentistry of New Jersey, he developed a computer program that replicated the paper-based interoffice mail system. This software system integrated familiar features such as the inbox, outbox, folders, memo, attachments, and address book, which he named EMAIL. On August 30, 1982, the United States government officially registered his copyright for the software, establishing his recognition as the creator of the email system.

Explanation

Ammonia is a crucial compound in biological nitrogen fixation, which is the key function of microbial bio-fertilizers. Soil microorganisms such as Rhizobium, Azotobacter, Azospirillum, and blue-green algae convert atmospheric nitrogen gas into ammonia in the plant rhizosphere. Ammonia occupies a unique biochemical position as the only inorganic form of nitrogen that is directly incorporated into organic compounds, such as amino acids and proteins, making it an essential, obligate intermediate in the natural fertilization process facilitated by these beneficial microbes.

Explanation

Utricularia, commonly known as bladderworts, is a genus of carnivorous plants consisting of aquatic, terrestrial, and epiphytic species. These plants are insectivorous and thrive in nutrient-deficient environments, such as waterlogged soils or shallow water bodies. They have highly specialized, bladder-like traps that operate under negative internal pressure. When small aquatic organisms or insects touch the sensitive trigger hairs on the bladder door, the trap snaps open rapidly, drawing the prey inside with a rush of water. Once trapped, the prey is digested by enzymes secreted by the plant, allowing it to absorb essential nutrients like nitrogen and phosphorus.

Explanation

Glycogen is a highly branched polysaccharide of glucose that functions as the primary energy storage macromolecule in animals and fungi. In vertebrates, it is synthesized and stored mainly in the liver and skeletal muscle cells to provide a quick source of glucose during metabolic demand. Its highly branched structure, featuring alpha-1,4-glycosidic chains with alpha-1,6-glycosidic branches, allows for rapid mobilization by enzymes. Fungi similarly store energy as glycogen within their cells.

Explanation

The Bhopal gas tragedy, which occurred on the night of December 2–3, 1984, at the Union Carbide India Limited pesticide plant in Bhopal, Madhya Pradesh, was caused by the leakage of highly toxic methyl isocyanate (CH₃NCO) gas. This industrial disaster is considered one of the world's worst chemical accidents, exposing over 500,000 people to the deadly gas and causing thousands of immediate and long-term fatalities as well as severe chronic health complications.

Explanation

Vinegar is an aqueous solution of acetic acid and trace compounds. It typically contains 5% to 8% acetic acid by volume. Acetic acid, also known as ethanoic acid, is produced through the fermentation of ethanol or sugars by acetic acid bacteria. This acid is responsible for the characteristic sour taste and pungent odor of vinegar.

Explanation

Rabindranath Tagore founded the school and cultural center of Shantiniketan in Bolpur, West Bengal. Although his father, Debendranath Tagore, had originally purchased the land and built an ashram there in 1863, Rabindranath Tagore transformed the area on 22 December 1901 by establishing an experimental open-air school known as the Brahmacharya Ashram. He envisioned a system of education that combined traditional Indian values with modern Western sciences in a natural setting. This institution was expanded significantly over the decades and eventually grew into the world-renowned Visva-Bharati University in 1921.

Explanation

Gautama Buddha preached his teachings in the common tongue of the masses to ensure they were accessible to everyone, irrespective of social background. While he spoke in Magadhi and other local Prakrit dialects of northeastern India, his teachings were systematically compiled, preserved, and recorded in Pali. Pali served as the literary and liturgical language of early Buddhism, and the entire Theravada Buddhist canon, known as the Tripitaka, is written in this language, cementing its status as the primary language associated with the Buddha's preachings.

Explanation

Average total cost is the sum of average fixed cost and average variable cost:

ATC = AFC + AVC

Average fixed cost is obtained by dividing total fixed cost by the quantity produced:

AFC = TFC / Q

Substitute TFC = 45000 and Q = 2500:

AFC = 45000 / 2500 = 18

Average variable cost is the difference between average total cost and average fixed cost:

AVC = ATC - AFC

Substitute ATC = 54 and AFC = 18:

AVC = 54 - 18 = 36