SSC CHSL Tier 1 2016 General Awareness Questions with Solutions

Explanation

Calcium carbide (CaC₂) is widely used for the artificial ripening of fruits such as mangoes. When calcium carbide reacts with moisture, it produces acetylene gas (C₂H₂). Acetylene functions similarly to ethylene, the natural plant hormone that regulates fruit ripening. This gas triggers and accelerates the ripening process, causing the mangoes to soften and change color rapidly.

Explanation

The Yellow River, also known as the Huang He, is the second-longest river in China and the sixth-longest river system in the world. Originating in the Bayan Har Mountains of Qinghai province in western China, it flows through nine Chinese provinces before emptying into the Bohai Sea. It is historically referred to as the cradle of Chinese civilization because its basin was the birthplace of ancient Chinese civilizations and the most prosperous region in early Chinese history.

Explanation

Naypyidaw is the official capital city of Myanmar, serving as the country's administrative and political center since November 2005. It is a planned city situated in the central part of the country, specifically within the Naypyidaw Union Territory, and hosts all branches of the national government, including the parliament, presidential palace, ministries, and supreme court.

Explanation

Buenos Aires is the capital and largest city of Argentina. Located on the western shore of the estuary of the Rio de la Plata on the southeastern coast of South America, it serves as the political, financial, and cultural hub of the nation.

Explanation

The Panchsheel Pact, officially known as the Agreement on Trade and Intercourse between Tibet Region of China and India, was signed on April 29, 1954. The agreement was signed by Prime Minister Jawaharlal Nehru of India and Premier Zhou Enlai of China. It established the Five Principles of Peaceful Coexistence, which aimed to guide relations between the two nations through mutual respect for sovereignty, non-aggression, non-interference, equality, and peaceful coexistence.

Explanation

The Jallianwala Bagh tragedy, also known as the Amritsar massacre, occurred on 13 April 1919 in Amritsar, Punjab. On this day, which coincided with the Punjabi festival of Baisakhi, a large crowd gathered at the Jallianwala Bagh ground to peacefully protest the arrest of nationalist leaders Dr. Saifuddin Kitchlew and Dr. Satyapal under the Rowlatt Act. Brigadier-General Reginald Dyer ordered British troops to block the only exit of the public garden and open fire on the unarmed gathering, resulting in hundreds of deaths and leaving over a thousand people injured. This brutal event became a major turning point in the Indian national movement.

Explanation

Ted Nelson coined the terms hypertext and hypermedia in 1963, publishing them in 1965. He envisioned hypertext as a model for non-linear writing and reading, where text, graphics, and other media could be linked dynamically. This foundational work was developed through Project Xanadu, his computer network project, which laid the conceptual groundwork for modern digital information linking and the World Wide Web.

Explanation

According to the first equation of motion under gravity, the final velocity v of a freely falling object is given by the formula:

v = u + gt

For an object in a free fall, the initial velocity u is 0 m/s. The standard acceleration due to gravity g is approximately 9.8 m/s², and the time of fall t is 1 s. Substituting these values into the formula:

v = 0 + 9.8 × 1 = 9.8 m/s

Explanation

Orbital motion occurs when an object moves along a circular or elliptical path around a central point or body that is external to it. In this type of motion, the axis of rotation lies outside the boundary of the moving object and does not pass through it. A typical example is the revolution of the Earth around the Sun, where the axis of this revolutionary or orbital motion is centered at the Sun.

Explanation

The Constitution of India is the longest written constitution of any sovereign nation in the world. At the time of its adoption in 1949, it contained 395 articles in 22 parts and 8 schedules, comprising about 145,000 words. The exceptional length of the Indian Constitution is attributed to India's vast geographical and cultural diversity, the inclusion of detailed administrative provisions, the incorporation of both central and state government structures, and extensive safeguards for vulnerable and minority communities. Over the decades, subsequent amendments have further added to its size, solidifying its status as the most comprehensive and detailed written constitution globally.

Explanation

Under the provisions of the Constitution of India and the Delimitation Act, the state of Karnataka is represented by 28 members of Parliament in the Lok Sabha. These members are elected directly by the registered voters of Karnataka across 28 territorial constituencies during the Lok Sabha elections.

Explanation

Cricket originated in England and is traditionally recognized as the country's national summer sport. Having developed from its early origins in the late medieval period, cricket grew in popularity during the 17th and 18th centuries to become deeply integrated into English culture and social history, with the establishment of formal rules and governing bodies like the Marylebone Cricket Club (MCC) cementing its status.

Explanation

Rudyard Kipling wrote The Jungle Book, a classic collection of stories first published in 1894. The stories are mostly set in an Indian forest and feature iconic characters such as Mowgli, a boy raised by wolves, Baloo the bear, and Bagheera the black panther. Kipling, an English novelist, poet, and journalist, drew heavy inspiration from his years living in India to write these famous tales.

Explanation

The garden inside the Taj Mahal complex is built in the classic Mughal Garden style, which follows the traditional Persian Charbagh layout. Meaning four gardens, a Charbagh is characterized by a highly symmetrical square design divided by central walkways and channels of flowing water into four smaller quadrants. This layout is rich in Islamic symbolism, designed to represent the gardens of Paradise described in the Quran, complete with flowing rivers. In the Taj Mahal, these quadrants are further subdivided by secondary paths into sixteen sunken flowerbeds, integrating water fountains, pools, and manicured greenery to create a harmonious and aesthetically precise landscape.

Explanation

Latanoprost is a prostaglandin analog medication used to treat open-angle glaucoma and ocular hypertension. It works by promoting the drainage of aqueous humor, the natural fluid inside the eye, specifically through the uveoscleral pathway. This increased outflow lowers intraocular pressure, which is crucial for preventing progressive damage to the optic nerve and preserving vision.

Explanation

Cytokinins are a major class of plant growth regulators (phytohormones) that are primarily known for stimulating cytokinesis, which is the process of cell division. These hormones are synthesized in actively growing tissues, particularly in the root tips, and are transported to other organs through the xylem. In addition to regulating cell division, cytokinins play a fundamental role in organogenesis and shoot differentiation. In plant tissue culture, the balance between different phytohormones is key to directing development; a high ratio of cytokinins to auxins specifically promotes shoot initiation and growth, making cytokinins essential for shoot formation.

Explanation

Lungs are the primary organs of the respiratory system in humans and most other animals. They facilitate the process of respiration by enabling gas exchange, where oxygen from the inhaled air is transferred into the bloodstream to be delivered to body tissues, and carbon dioxide, a metabolic waste product, is filtered out of the blood and exhaled into the atmosphere.

Explanation

Carl Wilhelm Scheele, a Swedish-German pharmaceutical chemist, discovered oxygen in 1772. He produced the gas by heating mercuric oxide, silver carbonate, and various nitrates, referring to it as fire air due to its ability to support combustion. Although Joseph Priestley independently discovered the gas and published his findings first in 1774, historical records show that Scheele had successfully isolated it two years prior.

Explanation

Valence electrons are the electrons located in the outermost shell, or the highest energy level, of an atom. These electrons determine the chemical properties of an element and participate directly in the formation of chemical bonds with other atoms.

Explanation

The standard binary system of data measurement defines relations between different units of digital information in powers of 2.

1 Gigabyte (GB) is equal to 1024 Megabytes (MB).

1 Megabyte (MB) is equal to 1024 Kilobytes (KB).

To calculate the number of Kilobytes in 1 Gigabyte, we multiply these two conversion factors:

1 GB = 1024 × 1024 KB

This is mathematically represented as 2¹⁰ × 2¹⁰ = 2²⁰ Kilobytes, which equals 1024 × 1024 KB.

Explanation

Queen Mary I of England, who ruled from 1553 to 1558, earned the nickname Bloody Mary due to her aggressive attempts to reverse the English Reformation and restore Roman Catholicism. During her five-year reign, she persecuted hundreds of Protestants, leading to the executions of nearly three hundred religious dissenters who were burned at the stake for heresy. This brutal campaign against religious reform cemented her infamous moniker in historical accounts.

Explanation

Arc elasticity of demand measures the elasticity of demand at the midpoint between two selected points on a demand curve. The formula is:

Arc Elasticity = (ΔQ / Average Quantity) / (ΔP / Average Price)

Given the following values: Initial quantity (Q₁) = 4600 Final quantity (Q₂) = 4200 Initial price (P₁) = 960 Final price (P₂) = 1000

First, calculate the change in quantity (ΔQ) and change in price (ΔP): ΔQ = Q₂ - Q₁ = 4200 - 4600 = -400 ΔP = P₂ - P₁ = 1000 - 960 = 40

Next, calculate the average quantity and average price: Average Quantity = (Q₁ + Q₂) / 2 = (4600 + 4200) / 2 = 4400 Average Price = (P₁ + P₂) / 2 = (960 + 1000) / 2 = 980

Substitute these values into the formula: Arc Elasticity = (-400 / 4400) / (40 / 980) Arc Elasticity = (-1 / 11) / (2 / 49) Arc Elasticity = (-1 / 11) × (49 / 2) Arc Elasticity = -49 / 22 ≈ -2.23

Explanation

An oligopoly market structure is characterized by a small number of large firms and significant barriers to entry. One of the primary barriers is economies of scale, where existing firms operate at a high volume that minimizes average costs, making it highly difficult for new competitors to enter the market.

In pure competition, firms are price takers because they sell homogeneous products and represent a tiny fraction of the total market. Because the demand curve faced by an individual firm is perfectly elastic, the firm can sell any quantity of goods it produces at the prevailing market price without affecting that price.

Explanation

West Bengal has the largest area of mangrove forest in India, largely due to the presence of the Sundarbans, which is the largest contiguous mangrove forest ecosystem in the world. According to the India State of Forest Report, West Bengal accounts for nearly half of the country's total mangrove cover, spanning over 2,100 square kilometers. This region is home to a rich biodiversity of mangrove species, famously including the Heritiera fomes (locally known as Sundari trees), which thrive in the deltaic region formed by the confluence of the Ganges, Brahmaputra, and Meghna rivers in the Bay of Bengal.

Explanation

Manas Tiger Reserve is situated in the state of Assam, along the foothills of the Eastern Himalayas. It is a highly biodiverse region designated as a UNESCO World Heritage Site, a Project Tiger reserve, an elephant reserve, and a biosphere reserve. The reserve is contiguous with the Royal Manas National Park in Bhutan and is famous for sheltering rare and endangered endemic species such as the pygmy hog, golden langur, and hispid hare, with the Manas River flowing through it.

Explanation

Major Yuri Gagarin, a Soviet cosmonaut, became the first human to travel into outer space on April 12, 1961. His spacecraft, Vostok 1, completed one orbit of the Earth in a historic flight lasting approximately 108 minutes, launching humanity into the era of human spaceflight.

Explanation

India currently has 28 states and 8 Union Territories, following the bifurcation of Jammu and Kashmir into two Union Territories in October 2019. Although India had 29 states in 2016 when the exam was conducted, the present correct number of states is 28.

Explanation

China is the leading producer of wheat in the world, consistently ranking first globally. According to the Food and Agriculture Organization of the United Nations, China produced over 130 million metric tonnes of wheat in 2016, which accounts for approximately 17% of total global wheat production. The primary wheat-producing areas in the country are situated in the temperate plains of the north, particularly the North China Plain, where optimal soil conditions, intensive farming techniques, and extensive irrigation facilities support high-yielding crops.

Explanation

Noor Jahan, born Mehr-un-Nissa, was the chief consort and twentieth wife of the Mughal Emperor Jahangir, whom she married in 1611. She was highly influential, wielding significant administrative power and political influence, and is often regarded as the real power behind the throne during Jahangir's reign.

Explanation

The First Battle of Tarain was fought in the year 1191 near Taraori, which is in modern-day Haryana, India. The conflict took place between the Chahamana ruler Prithviraj Chauhan and the Ghurid ruler Mu'izz al-Din Muhammad Ghori, resulting in a decisive victory for the Rajput forces led by Prithviraj Chauhan.

Explanation

Benjamin Franklin invented the lightning rod in 1749 as part of his pioneering research into electricity. He hypothesized that lightning was an electrical phenomenon and designed a pointed iron rod to be mounted on the tops of buildings. This rod would attract the electrical discharge from lightning storms and channel it safely into the ground through a connected wire, thereby preventing fires and structural damage to the buildings below. His successful experiments in the early 1750s confirmed this theory and led to the widespread adoption of lightning rods globally.

Explanation

Static equilibrium refers to a physical state where an object is completely at rest. For an object to be in static equilibrium, two conditions must be met: the vector sum of all external forces acting on the object must be zero, ensuring no translational acceleration, and the sum of all external torques acting on it must be zero, ensuring no rotational acceleration. Since the object has zero velocity and zero acceleration, it remains stationary.

Explanation

Magnetic flux is defined as the total magnetic field passing through a given surface. Mathematically, the magnetic flux Φ through a plane surface of area A is the product of the component of the magnetic flux density B perpendicular (normal) to the surface and the area of the surface itself. This relation is expressed by the formula Φ = B × A when the magnetic field is perpendicular to the plane.

Explanation

The United States of America is the first country in the world to frame a modern written constitution. Drafted during the Philadelphia Convention in 1787 and officially signed on September 17, 1787, the U.S. Constitution went into effect in 1789. It established the framework for a federal democratic republic with a clear separation of powers among the legislative, executive, and judicial branches, setting a historical precedent that influenced many democratic nations globally.

Explanation

Chandigarh is a Union Territory in India and is represented by a single constituency in the Lok Sabha, the lower house of the Indian Parliament. The entire territory of Chandigarh forms one parliamentary constituency, electing one Member of Parliament to represent it at the national level.

Explanation

The 2016 ICC Under-19 Cricket World Cup was held in Bangladesh from January 27 to February 14, 2016. In the final match played at the Sher-e-Bangla National Cricket Stadium in Mirpur, West Indies secured their first-ever Under-19 World Cup title. Led by captain Shimron Hetmyer, West Indies successfully chased down India's total of 145 runs to win the match by five wickets, with Keacy Carty scoring an unbeaten half-century to guide his team to victory.

Explanation

Malgudi Days is a renowned collection of short stories written by R. K. Narayan and published in 1943. The stories are set in the fictional town of Malgudi in South India, portraying the daily lives, struggles, and simple joys of its eccentric and relatable inhabitants. R. K. Narayan is celebrated as one of India's greatest English-language novelists, known for his simple, elegant prose and keen observation of human nature.

Explanation

The tomb of Iltutmish, built in 1235 CE by the ruler himself, is located within the Qutub Minar complex in New Delhi. The entire complex, which includes the iconic Qutub Minar, the Quwwat-ul-Islam Mosque, and the Alai Darwaza, was designated as a UNESCO World Heritage Site in 1993. The tomb of Iltutmish is famous for its elaborate carvings, beautiful Arabic calligraphy, and early Indo-Islamic architectural style, particularly the transition from corbelled arches to true arches.

Explanation

Mary Kom was awarded the Padma Bhushan, India's third-highest civilian award, in 2013 for her outstanding contributions to boxing and sports. Prior to this, she was honoured with the Padma Shri in 2006. Therefore, as of 2016, the Padma Bhushan remained the highest civilian honour she had received.

Explanation

Tramadol is a synthetic, centrally acting opioid analgesic prescribed for the management of moderate to moderately severe pain. It exerts its therapeutic effect through a dual mechanism of action. It binds to the mu-opioid receptors in the brain and spinal cord to block pain signals. Additionally, it inhibits the reuptake of neurotransmitters, specifically norepinephrine and serotonin, which enhances the activation of the descending pain-inhibitory pathways in the central nervous system. This dual action makes it highly effective in relieving both acute and chronic pain.

Explanation

Sugarcane belongs to the genus Saccharum, which is a member of the Poaceae family, commonly known as the grass family. It is a tall, perennial grass characterized by robust, jointed, fibrous stalks that are rich in sucrose. Like other members of the Poaceae family, such as wheat, rice, and maize, sugarcane features typical grass characteristics, including hollow or pithy stems and narrow, elongated leaves.

Explanation

Antonie van Leeuwenhoek is widely recognized as the Father of Microbiology due to his pioneering work in microscopy and his groundbreaking discoveries of microscopic life. In the late seventeenth century, using highly powerful single-lens microscopes of his own design and construction, he became the first person to observe and describe single-celled organisms, which he initially referred to as animalcules. His meticulous observations of bacteria, protozoa, spermatozoa, and red blood cells laid the essential foundations for the scientific discipline of microbiology.

Explanation

Neoprene, chemically known as polychloroprene, is a synthetic rubber produced by the polymerization of chloroprene (2-chloro-1,3-butadiene). It exhibits excellent chemical stability, outstanding resistance to degradation from heat, weathering, and ozone, and maintains its flexibility over a wide range of temperatures. These properties make it ideal for demanding applications such as manufacturing wet suits, electrical insulation, hoses, gaskets, and automotive belts.

Explanation

Sodium (Na) is an alkali metal with one valence electron, while chlorine (Cl) is a halogen with seven valence electrons. To achieve a stable octet configuration, sodium transfers its single valence electron to chlorine. This transfer creates a positively charged sodium cation (Na⁺) and a negatively charged chloride anion (Cl⁻). The strong electrostatic force of attraction between these oppositely charged ions binds them together, forming an ionic bond.

Explanation

In computer architecture and memory systems, storage capacities are calculated based on the binary system (base 2). A kilobyte is defined as 2¹⁰ bytes, which equals exactly 1024 bytes. This binary representation is standard in computing because it aligns with the power-of-two addressing used by computer hardware.

Explanation

Dadra and Nagar Haveli, located adjacent to the state of Maharashtra, has a significant portion of its population speaking Marathi. Due to this linguistic and cultural connection, Marathi is recognized as one of the official languages of the Union Territory, alongside Hindi, Gujarati, and English, for administrative and communication purposes.

Explanation

At market equilibrium, the quantity demanded equals the quantity supplied: D = S

Substituting the given equations: 59600 - 6P = 29600 + 4P

Rearranging the terms to solve for the equilibrium price P: 59600 - 29600 = 4P + 6P 30000 = 10P P = 3000

Substituting the equilibrium price P = 3000 back into the demand equation gives the equilibrium quantity Q: Q = 59600 - 6 × 3000 Q = 59600 - 18000 Q = 41600

Alternatively, using the supply equation: Q = 29600 + 4 × 3000 Q = 29600 + 12000 Q = 41600

Explanation

In economics, scarcity and opportunity costs are fundamentally linked to the limitation of resources. Scarcity arises because human wants are unlimited while the resources to satisfy them are limited. Opportunity cost represents the value of the next-best alternative foregone when a choice is made under constraint.

If resources were unlimited, scarcity would completely disappear because all wants could be met simultaneously. Consequently, because no choices or trade-offs would need to be made, opportunity costs would also cease to exist. Therefore, the assertion that there would be no scarcity but there would still be opportunity costs is incorrect.

Explanation

Phytoplankton are microscopic, single-celled photosynthetic organisms that drift in both freshwater and marine environments. Because they contain chlorophyll, they use sunlight, carbon dioxide, and water to synthesize organic compounds through the process of photosynthesis. This capability makes them the primary producers of the aquatic ecosystem, converting solar energy into chemical energy. They serve as the foundation of the aquatic food web, directly or indirectly providing the fundamental source of food and energy for a vast majority of aquatic organisms.

Explanation

Carbon monoxide (CO) binds to the active iron sites of hemoglobin with an affinity that is approximately 200 to 250 times greater than that of oxygen. When inhaled, carbon monoxide readily displaces oxygen to form a highly stable compound called carboxyhemoglobin. This strong binding prevents the transport and release of oxygen to the bodily tissues, leading to oxygen deprivation at the cellular level.