SSC CHSL Tier 1 2016 General Awareness Questions with Solutions

Explanation

Asthma is a chronic respiratory disease characterized by the inflammation and narrowing of the airways in the lungs, which causes breathing difficulties, wheezing, chest tightness, and coughing. It is primarily triggered by environmental factors such as air pollution, allergens like pollen and dust mites, chemical fumes, tobacco smoke, cold air, or genetic factors, rather than pathogens or contaminants found in polluted water.

Explanation

The acronym BRICS represents five major emerging national economies: Brazil, Russia, India, China, and South Africa. Originally formed as BRIC in 2009, the association expanded to include South Africa in late 2010, which led to the addition of the letter S to the acronym.

Explanation

On June 21, the Southern Hemisphere of the Earth is tilted furthest away from the Sun, receiving the least direct sunlight and experiencing its shortest day and longest night of the year. This astronomical phenomenon marks the arrival of winter in the Southern Hemisphere and is known as the winter solstice.

Explanation

The United States detonated two nuclear weapons over the Japanese cities of Hiroshima and Nagasaki on August 6 and August 9, 1945, respectively, during the final stage of World War II. This action, approved by US President Harry S. Truman, remains the only use of nuclear weapons in armed conflict. The devastating impact of the atomic bombs led directly to the unconditional surrender of Japan on August 15, 1945, bringing an end to the global conflict of World War II.

Explanation

John Pemberton, an American pharmacist, invented Coca-Cola in May 1886 in Atlanta, Georgia. He formulated the original recipe, which was a combination of coca leaf extract and kola nut syrup, in his laboratory as a patent medicine intended to relieve headaches and fatigue. The beverage was first sold as a soda fountain drink at Jacob's Pharmacy in Atlanta.

Explanation

Sound waves are longitudinal mechanical waves because they require a material medium to propagate, and the particles of the medium vibrate parallel to the direction of the wave's travel. When a sound wave travels through a gas, it causes the gas molecules to compress and decompress, creating alternating regions of high pressure (compressions) and low pressure (rarefactions). Since gases do not possess shear elasticity to support transverse mechanical waves, sound propagates through them strictly as a longitudinal wave.

Explanation

In projectile motion on a level plane, the total time of flight (T) and the time taken to reach the maximum height (t) are given by the standard kinematic formulas:

T = 2u sin θ / g

t = u sin θ / g

where u is the initial velocity of projection, θ is the angle of projection, and g is the acceleration due to gravity.

Comparing these two equations directly yields the relation:

T = 2t

This formula shows that the total flight time is twice the time required to reach the maximum height. This symmetry exists because, in the absence of air resistance, the time taken for the projectile to ascend to its highest point is equal to the time taken to descend back to the launch level.

Explanation

The Indian Constitution currently recognizes six fundamental rights, which are the Right to Equality, Right to Freedom, Right against Exploitation, Right to Freedom of Religion, Cultural and Educational Rights, and Right to Constitutional Remedies. Originally there were seven, but the Right to Property was deleted by the 44th Amendment Act in 1978.

Explanation

The Lok Sabha, constitutionally designated as the House of the People, is the lower house of the bicameral Parliament of India. Its members are directly elected by the citizens of India on the basis of universal adult suffrage through first-past-the-post voting in single-member constituencies. It represents the popular will of the nation and holds significant legislative powers, particularly in financial matters and the accountability of the executive, as the Council of Ministers is collectively responsible to it.

Explanation

In badminton, a standard game is played to 21 points. If both sides reach a score of 20-20, the game enters a deuce situation. To win the game from a deuce, a player or team must gain a lead of two clear points, such as 22-20 or 23-21. Play continues until a two-point margin is achieved, up to a maximum score of 30 points, where the first side to reach 30 wins the game.

Explanation

The work function of a material is defined as the minimum thermodynamic work or energy required to remove a free electron from the surface of a solid to a point in the vacuum immediately outside the solid surface. It is a fundamental property of the material, typically measured in electronvolts (eV), and determines the threshold energy required for electronic emission processes such as the photoelectric effect and thermionic emission.

Explanation

Bhopal is the capital city of the central Indian state of Madhya Pradesh. It was established as the state capital in 1956 following the reorganization of states in India, and it serves as the administrative, political, and judicial center of the state.

Explanation

In 1615, Sir Thomas Roe was sent by King James I of England as a royal ambassador to the Mughal court of Emperor Jahangir. He remained at the court for several years and successfully negotiated trade concessions. In 1617, Jahangir issued a royal farman granting the British East India Company permission to trade and establish factories in various parts of the Mughal Empire, which significantly expanded British commercial influence in India.

Explanation

Shri Shri Ravi Shankar was awarded the Padma Vibhushan in 2016, which is India's second-highest civilian award, in recognition of his outstanding contributions to spiritualism, yoga, and humanitarian services globally. The announcement of this prestigious honour was made on the eve of India's 67th Republic Day, on January 25, 2016, celebrating his extensive efforts in promoting peace and stress-free living through the Art of Living Foundation.

Explanation

When an ant bites, it injects formic acid into the victim's skin. Formic acid, also known systematically as methanoic acid, is a simple carboxylic acid with the chemical formula HCOOH. The injection of this acidic substance triggers an immediate localized inflammatory response, leading to the characteristic burning sensation, itching, pain, and swelling at the site of the bite.

Explanation

Random Access Memory (RAM) is a volatile form of computer data storage that allows data items to be read or written in almost the same amount of time irrespective of the physical location of data inside the memory. It acts as a high-speed temporary workspace where the operating system, active application programs, and frequently used instructions are kept so that the central processing unit can access them quickly. By retrieving active data from RAM instead of slower secondary storage devices, the system minimizes latency and significantly enhances its overall processing speed.

Explanation

Malayalam is the official language of the Union Territory of Lakshadweep. The archipelago has close cultural, historical, and geographical ties with the neighboring state of Kerala. Malayalam is the primary language spoken by the vast majority of the population across the islands, and it serves as the official medium for administrative purposes and educational instruction in the union territory.

Explanation

The audible range of sound for human beings is 20 Hz to 20,000 Hz. This frequency range represents the vibrational limits that the human ear can detect and process. Sound waves within this range enter the ear canal, cause the tympanic membrane to vibrate, and are subsequently transmitted through the ossicles to the cochlea. Inside the cochlea, these vibrations stimulate hair cells which send electrical signals to the brain via the auditory nerve, allowing us to perceive the sound. Frequencies lower than 20 Hz are classified as infrasound, while those higher than 20,000 Hz are classified as ultrasound, both of which are generally imperceptible to the human ear.

Explanation

Uttar Pradesh has the highest representation in the Lok Sabha, the Lower House of Parliament, with 80 parliamentary seats allocated to the state. Under the provisions of the Constitution of India, the allocation of seats in the Lok Sabha is based on the population of each state, which makes Uttar Pradesh, being the most populous state in the country, the holder of the largest number of constituencies.

Explanation

A standard Kabaddi match is played between two teams, each consisting of 7 active players on the court at any given time. While a full squad includes a total of 12 players, only 7 players from each side take the field to play, with the remaining 5 serving as substitutes.

Explanation

India: From Midnight to the Millennium is a highly acclaimed book written by Shashi Tharoor, first published in 1997 to commemorate the 50th anniversary of India's independence. In this book, Tharoor provides a comprehensive analysis of the political, economic, and social landscape of post-independence India. He explores critical issues such as democratic governance, poverty, caste division, religious pluralism, and the shift towards economic liberalization, arguing that India's diversity and democratic institutions are its greatest strengths.

Explanation

Alkanes are saturated acyclic hydrocarbons that follow the general chemical formula CₙH₂ₙ₊₂. The prefix dec- indicates the presence of ten carbon atoms, meaning n = 10 for decane. Substituting this value into the formula gives the number of hydrogen atoms:

Number of hydrogen atoms = 2n + 2 = 2 × 10 + 2 = 22

This yields the molecular formula C₁₀H₂₂ for decane.

Explanation

The pale yellow color of normal urine is due to the presence of a pigment called urochrome, also known as urobilin. This pigment is produced as a byproduct of the breakdown of hemoglobin, the iron-containing protein in red blood cells that carries oxygen. When senescent red blood cells are broken down in the body, the heme group is processed by the liver and spleen into bilirubin, which is subsequently converted into urobilinogen and then oxidized into urobilin. The kidneys filter urobilin from the bloodstream and excrete it in the urine, resulting in its characteristic yellow color.

Explanation

Atal Bihari Vajpayee, the former Prime Minister of India, was conferred with the Bharat Ratna, India's highest civilian award, in the year 2015. President Pranab Mukherjee presented the prestigious award to him on March 27, 2015, in recognition of his decades-long distinguished service to the nation as an exemplary political leader, orator, and statesman.

Explanation

Beta-blockers are a class of medications widely used to treat high blood pressure and other cardiovascular conditions. They work by blocking the effects of the hormone epinephrine, also known as adrenaline. By binding to beta receptors on cardiac cells, these drugs cause the heart to beat more slowly and with less force. This reduction in heart rate and contractile strength decreases the overall workload of the heart and lowers blood pressure throughout the cardiovascular system.

Explanation

Ocimum tenuiflorum is the botanical name for holy basil, commonly known as tulsi in India. It is an aromatic perennial plant belonging to the Lamiaceae family. Native to the Indian subcontinent, tulsi is highly revered in Hinduism and is widely cultivated for its religious, spiritual, and traditional medicinal uses in Ayurveda.

Explanation

The liver is the primary organ and gland responsible for the synthesis and secretion of bile, a vital digestive fluid. Once produced by the hepatocytes in the liver, bile is transported through the hepatic ducts and can be stored and concentrated in the gallbladder. During digestion, bile is released into the duodenum of the small intestine, where its bile salts emulsify large fat globules into smaller droplets. This emulsification process significantly increases the surface area of the lipids, allowing lipase enzymes to efficiently break down and digest the dietary fats.

Explanation

Ammonium chloride is an inorganic compound formed by the combination of ammonium cations and chloride anions. The ammonium ion is a polyatomic ion represented as NH₄⁺, which carries a charge of +1. The chloride ion is represented as Cl⁻, which carries a charge of -1. To achieve electrical neutrality, one ammonium ion combines with one chloride ion in a 1:1 ratio, resulting in the chemical formula NH₄Cl.

Explanation

Nitrogen exists as a diatomic molecule (N₂) held together by strong covalent triple bonds internally, but the individual molecules interact only via weak London dispersion forces. Because these weak intermolecular forces require very little thermal energy to overcome, nitrogen has an extremely low melting point of -210 °C (63 K).

Explanation

Transmission Control Protocol is a core communication protocol of the Internet Protocol Suite, operating at the transport layer. It is designed to establish and maintain a reliable, connection-oriented network conversation between host computers, ensuring that data packets are delivered in the correct order without errors or loss.

Explanation

Maithili is an Indo-Aryan language predominantly spoken in the Mithila region, which encompasses northern and eastern parts of Bihar in India, as well as the adjoining eastern Terai region of Nepal. Geographically, its speakers are concentrated in the northern and eastern parts of the Indian subcontinent, making it a language that is not spoken in the southern part of India. Maithili is officially recognized under the Eighth Schedule of the Indian Constitution as one of India's scheduled languages.

Explanation

At market equilibrium, the quantity demanded equals the quantity supplied, which means D = S.

Equating the demand and supply equations: 230000 - 19P = 180000 + 6P

Rearranging the terms to solve for the equilibrium price, P: 230000 - 180000 = 6P + 19P 50000 = 25P P = 2000

Substituting P = 2000 back into the supply equation to find the equilibrium quantity: S = 180000 + 6 × 2000 S = 180000 + 12000 S = 192000 units

Explanation

Under monopolistic competition, many firms sell differentiated products that serve as close substitutes for one another. Since consumers can easily switch to a substitute if one firm raises its price, each firm faces a highly price-elastic demand curve.

In a pure monopoly, there is a single seller with no close substitutes. As the sole producer in the market, the firm has significant market power and decides both its output level and price to maximize profits, which is achieved by setting output at the point where marginal revenue equals marginal cost.

Explanation

Indravati Tiger Reserve is located in the Bijapur district of Chhattisgarh. It is named after the Indravati River, which flows nearby and forms the northern boundary of the reserve. The reserve was declared a national park in 1981 and subsequently designated as a Tiger Reserve in 1983 under Project Tiger. It is highly regarded for its diverse wildlife populations, particularly as one of the last remaining habitats for the endangered wild Asian buffalo, which is also the state animal of Chhattisgarh.

Explanation

Pyrolusite is a mineral consisting essentially of manganese dioxide (MnO₂). It is the most common manganese-bearing mineral and serves as the primary commercial ore for the extraction of manganese. It typically occurs as a black, amorphous, or granular mass, and is extensively used in steelmaking, the manufacturing of dry cell batteries, and various chemical applications.

Explanation

The International Monetary Fund is a major global financial institution established in 1944 at the Bretton Woods Conference. It consists of 190 member countries working together to foster global monetary cooperation, secure financial stability, facilitate international trade, promote high employment and sustainable economic growth, and reduce poverty around the world. The organization achieves this by providing financial assistance, policy advice, and capacity development to help member states manage their balance of payments and maintain overall economic stability.

Explanation

Dublin is the capital and largest city of Ireland. Situated at the mouth of the River Liffey in the province of Leinster, it has been the country's primary urban center since the medieval period. It serves as the political, administrative, economic, and cultural heart of the Republic of Ireland, housing the national parliament, Oireachtas, and the official residence of the President.

Explanation

An atlas is a bound collection of maps, traditionally in book form, which provides detailed geographical information, political boundaries, and thematic data about different regions of the Earth or other celestial bodies. The term originates from the mythological Greek giant Atlas, who was traditionally depicted holding up the celestial spheres on his shoulders, an image commonly placed on the covers of early map collections.

Explanation

India gained independence from the United Kingdom on August 15, 1947. This historic transition was formalized through the Indian Independence Act of 1947, passed by the British Parliament, which ended nearly two centuries of British colonial rule and partitioned British India into two independent dominions, India and Pakistan.

Explanation

Vint Cerf, along with Bob Kahn, co-designed the Transmission Control Protocol and the Internet Protocol, known as TCP/IP, in the 1970s. This suite of protocols became the foundational communication language of the internet, defining how packets of data are addressed, routed, and transmitted across interconnected networks to reach their destination. For this pioneering work, they are widely recognized as the fathers of the internet.

Explanation

By applying the lens formula:

1/f = 1/v - 1/u

According to the sign convention for a convex lens, the object is placed on the left side, so the object distance u is -40 cm. The image is formed on the other side (right side) of the lens, so the image distance v is +10 cm.

Substituting these values into the lens formula:

1/f = 1/10 - 1/(-40) 1/f = 1/10 + 1/40 1/f = (4 + 1)/40 1/f = 5/40 = 1/8 cm⁻¹

Thus, the focal length f of the lens is 8 cm, which is equal to 0.08 m.

The power P of a lens in diopters is the reciprocal of its focal length in meters:

P = 1/f = 1/0.08 = 100/8 = 12.5 diopters

Explanation

Tungsten is used to make the filament of an electric bulb because of its exceptionally high melting point of approximately 3422°C, which is the highest of all metals in their pure form. This property allows the filament to remain stable and glow intensely at extremely high temperatures without melting or breaking. Additionally, tungsten has high electrical resistivity, high tensile strength, and very low vapor pressure at elevated temperatures, which minimizes evaporation and ensures a longer lifespan for the bulb.

Explanation

The Green Climate Fund (GCF) is a global fund established by the United Nations Framework Convention on Climate Change (UNFCCC) in 2010 to support developing countries in limiting or reducing their greenhouse gas emissions and adapting to climate change. The headquarters of the GCF is located in the Songdo district of Incheon, South Korea, and became fully operational there in December 2013.

Explanation

Anjum Chopra is a prominent former captain of the Indian women's national cricket team. She represented India in six World Cups and was the first Indian woman to score an One Day International (ODI) century, as well as the first to play 100 ODIs. Her outstanding contributions to the sport earned her the Arjuna Award in 2007 and the Padma Shri in 2014. After retiring from playing, she transitioned into a well-known cricket commentator and analyst.

Explanation

Yann Martel is the Canadian author of the adventure novel Life of Pi, published in 2001. The story revolves around Piscine Molitor Pi Patel, an Indian boy from Pondicherry who survives a shipwreck and spends 227 days stranded on a lifeboat in the Pacific Ocean with a Bengal tiger named Richard Parker. The book achieved major critical and commercial success, winning the prestigious Man Booker Prize for Fiction in 2002 and later being adapted into an Academy Award-winning feature film.

Explanation

Humayun's Tomb, located in Delhi, is recognized as the first grand garden-tomb on the Indian subcontinent. Commissioned in the 1560s by his chief consort, Empress Bega Begum, and designed by the Persian architect Mirak Mirza Ghiyas, the monument integrated Persian and Indian architectural elements. It is famous for introducing the Charbagh layout on a monumental scale to the region, featuring a highly symmetrical four-quadrant garden divided by causeways and water channels that represent the rivers of paradise described in Islamic tradition. This design served as a major milestone and a direct inspiration for subsequent Mughal architectural masterpieces.

Explanation

The Rock Shelters of Bhimbetka are situated in the Raisen District of Madhya Pradesh, nestled in the foothills of the Vindhya Range on the southern edge of the Central Indian Plateau. This archaeological site features ancient cave paintings that date back to the Paleolithic and Mesolithic periods, showcasing some of the earliest traces of human life on the Indian subcontinent. The site was recognized for its immense cultural and historical value and was declared a UNESCO World Heritage Site in 2003.

Explanation

Udit Narayan was honoured with the Padma Bhushan in 2016 by the Government of India for his outstanding contributions to music and playback singing. This is the third-highest civilian award in India and remains the highest civilian honour he has received. Prior to this, he was awarded the Padma Shri, which is the fourth-highest civilian honour, in 2009.

Explanation

Sumatriptan is a triptan medication specifically developed for the acute treatment of migraine attacks. It acts as a selective agonist at the 5-hydroxytryptamine receptors, specifically the 5-HT₁B and 5-HT₁D receptor subtypes. Migraines are associated with the dilation of blood vessels in the brain and neurogenic inflammation. By stimulating these specific serotonin receptors, Sumatriptan causes the constriction of these dilated cranial blood vessels and inhibits the release of inflammatory neuropeptides from the trigeminal nerve, thereby alleviating the headache and associated symptoms.

Explanation

In Bryophytes, the dominant, main plant body is haploid and produces gametes, which is known as the gametophyte. This gametophytic phase is multicellular, free-living, photosynthetic, and highly conspicuous. The diploid sporophyte generation is physically attached to, less prominent, and nutritionally dependent on the gametophyte for its survival.