SSC CGL Tier 1 2012 General Awareness Questions with Solutions

Explanation

The life cycle of the malaria parasite, Plasmodium, begins in humans when an infected female Anopheles mosquito bites an individual to take a blood meal. During this process, the mosquito inoculates the parasite into the human host's bloodstream in the form of sporozoites. These sporozoites are the specific infective stage for humans. Upon entry, they travel through the circulatory system to reach the liver, where they invade hepatic cells to initiate the pre-erythrocytic or exo-erythrocytic phase of the infection.

Explanation

The Treaty of Versailles, signed in 1919 at the conclusion of World War I, formally mandated the return of Alsace-Lorraine to France. These territories had been annexed by the German Empire in 1871 following the Franco-Prussian War under the terms of the Treaty of Frankfurt. Article 51 of the Versailles treaty explicitly restored these provinces to French sovereignty, with the restoration retroactively effective from the date of the armistice on November 11, 1918. This provision was a key objective for the French government to reverse the territorial loss suffered decades earlier.

Explanation

James Prinsep, an officer in the Calcutta Mint and secretary of the Asiatic Society of Bengal, successfully deciphered the Brahmi script in 1837. By decoding the inscriptions found on various pillars and rocks throughout the Indian subcontinent, he identified that the king referred to as Devanampiya Piyadassi was the Mauryan Emperor Ashoka. This breakthrough provided the first definitive historical evidence of Ashoka's reign and his propagation of Dhamma. Prinsep's work in deciphering both the Brahmi and Kharosthi scripts allowed for the translation of ancient edicts, which fundamentally transformed the understanding of early Indian political and social history.

Explanation

Ex-situ conservation involves the maintenance and breeding of endangered species under artificial conditions outside their natural habitats. A germplasm bank is a type of gene bank that stores the genetic material of plants and animals to preserve their biodiversity for the long term. In these facilities, genetic resources are kept in the form of seeds, pollen, tissue cultures, or frozen embryos and gametes under controlled environmental conditions. This method ensures that the genetic variability of various species is protected against extinction, habitat destruction, or environmental changes, providing a reservoir of biological material for future breeding programs and restoration efforts.

Explanation

Diatom Ooze is a deep-sea siliceous deposit consisting of the microscopic skeletal remains of diatoms, which are a major group of single-celled photosynthetic algae. These organisms thrive in nutrient-rich, cold waters of the high latitudes and upwelling zones. Their cell walls are composed of opaline silica, and as they die, their remains accumulate on the ocean floor to form a fine-grained organic sediment. Because diatoms are classified within the algal kingdom, the resulting ooze is specifically identified as an algae-derived biogenic deposit.

Explanation

Chromatophores are specialized membrane-bound vesicles or lamellar structures found in photosynthetic bacteria, such as purple bacteria and cyanobacteria. Because prokaryotic organisms lack complex membrane-bound organelles like chloroplasts, their photosynthetic apparatus is localized within these internal membrane invaginations derived from the plasma membrane. Chromatophores contain the necessary light-harvesting pigments, including bacteriochlorophylls and carotenoids, along with the electron transport chain components required to convert light energy into chemical energy during the process of photosynthesis.

Explanation

Convex mirrors are used as rear-view or view-finding mirrors in vehicles because they produce an erect, virtual, and diminished image of objects behind the vehicle. The primary advantage of using a convex mirror is its ability to provide a much wider field of view than other mirror types. Since the reflected light rays diverge, the mirror can capture images from a broader area, allowing the driver to see a larger portion of the traffic and the road behind them in a relatively small mirror surface.

Explanation

M-commerce, or mobile commerce, refers to the buying and selling of goods and services through wireless handheld devices such as cellular phones and personal digital assistants. It is considered a subset of e-commerce that leverages mobile telecommunications networks to allow users to conduct commercial transactions, including mobile banking, ticket bookings, and digital content purchases, from any location without the need for a physical wired connection.

Explanation

Professor K.T. Shah, a prominent member of the Constituent Assembly of India, famously described the Directive Principles of State Policy as a cheque on a bank, payable only when the resources of the bank permit. This critique was aimed at the non-justiciable nature of these principles, which are contained in Part IV of the Indian Constitution. Unlike Fundamental Rights, the Directive Principles cannot be enforced by any court of law if the state fails to implement them. Shah argued that without legal teeth or a mandatory timeframe for implementation, these provisions remained mere pious superfluities or moral precepts whose fulfillment was entirely dependent on the convenience and financial capacity of the government of the day.

Explanation

Wheat, barley, rye, and pearl millet are all members of the family Poaceae, which is also commonly referred to as the Gramineae or grass family. These are monocotyledonous plants that are fundamental to global agriculture as primary cereal crops. Lemon and orange are members of the genus Citrus and belong to the family Rutaceae, commonly known as the rue or citrus family. These plants are dicotyledonous and are characterized by the presence of fragrant oil glands in their leaves and fruits. Consequently, the six plants listed are categorized into exactly two plant families.

Explanation

Bal Gangadhar Tilak proposed the Arctic Home theory in his seminal work titled The Arctic Home in the Vedas, published in 1903. He reached this conclusion by analyzing various astronomical references and hymns in the Rigveda and the Zend Avesta. Tilak argued that the descriptions of a dawn lasting for many days, long periods of continuous light and darkness, and specific stellar positions mentioned in the ancient texts could only be observed from the North Pole or the Arctic region. He posited that the Aryans lived in the Arctic circle during the pre-glacial period and were forced to migrate southward to Europe and the Indian subcontinent due to the onset of the last Ice Age around 8000 BCE.

Explanation

A cultigen is a plant that has been significantly altered or selected by humans and is known to exist only in cultivation, having no known wild counterpart of the same form. The term was introduced by Liberty Hyde Bailey to distinguish these domesticated plants from indigens, which are plants found growing naturally in the wild. Cultigens represent species or varieties that have emerged through the process of domestication, selective breeding, or human-induced hybridization, resulting in genetic and morphological traits that make them distinct from their wild ancestors and often dependent on human intervention for survival and reproduction.

Explanation

Article 312 of the Indian Constitution empowers the Rajya Sabha to initiate the creation of one or more All India Services common to both the Union and the States. For such a proposal to be considered, the Rajya Sabha must pass a resolution supported by not less than two-thirds of the members present and voting, declaring that the creation of such a service is necessary or expedient in the national interest. Once this resolution is passed, Parliament may by law provide for the creation of the service. This specific power is granted to the Rajya Sabha because it represents the interests of the States in the federal structure, and All India Services significantly impact state administration.

Explanation

Pyroligneous acid, commonly known as wood vinegar, is a dark, aqueous liquid produced through the destructive distillation of wood in the absence of air. During this process, the thermal decomposition of wood components like cellulose, hemicellulose, and lignin yields a variety of volatile compounds. The resulting condensed liquid is a complex mixture containing water and several organic substances, the most prominent of which is acetic acid (CH₃COOH). In typical wood distillation processes, acetic acid constitutes approximately 8% to 10% of the pyroligneous acid, making it the primary acidic component. Other minor constituents include methanol, often called wood spirit, and acetone, but the high concentration of acetic acid defines the chemical nature and industrial utility of the substance.

Explanation

Union Carbide India Limited (UCIL) was a pioneer in the development of the petrochemical industry in India. The company established the country's first integrated petrochemical complex at Trombay, Mumbai, which became operational in 1966. This facility utilized naphtha as a primary feedstock to produce a variety of petrochemical products, including ethylene, propylene, and polyethylene. These outputs served as essential raw materials for the burgeoning plastics and industrial chemical sectors in India, marking a significant milestone in the nation's industrial diversification and chemical manufacturing capabilities.

Explanation

The Bokaro Steel Plant was established in the Bokaro district, which was a part of Bihar prior to the reorganization of the state in November 2000. It was the fourth integrated public sector steel plant in India, built with technical and financial assistance from the Soviet Union. The plant was incorporated as a limited company in 1964 and later merged with the Steel Authority of India Limited (SAIL). Due to its historical location and significance to the region's industrial development, it is frequently associated with the undivided state of Bihar in administrative and academic contexts. The plant utilizes iron ore from the Kiriburu and Meghahatuburu mines and coal from the Jharia coalfields, making it a critical hub for heavy industry in the eastern plateau region.

Explanation

Alara Kalama was a distinguished ascetic and philosopher who became the first spiritual teacher of Siddhartha Gautama after he renounced his princely life. At his hermitage near Rajgir, Siddhartha studied the Samkhya philosophy and mastered the meditative stage known as the Sphere of Nothingness (akincannayatana) under Alara Kalama's guidance. Although Siddhartha quickly equaled his teacher's level of realization, he found that this state did not lead to ultimate liberation from suffering, which prompted him to continue his quest for enlightenment.

Explanation

Ram Sharan Sharma was a pioneering historian and Indologist who specialized in the socio-economic history of Ancient India. He was a leading proponent of the Marxist school of historiography, introducing a rigorous ideological framework to the study of Indian antiquity by focusing on class structure, social stratification, and the modes of production. His scholarship shifted the focus of Indian history from traditional dynastic narratives to the evolution of social and economic institutions. As the founding Chairman of the Indian Council of Historical Research (ICHR), his seminal works, such as Indian Feudalism and Shudras in Ancient India, fundamentally reshaped the ideological landscape of academic research in India.

Explanation

The 34th National Games of India were held in the state of Jharkhand from February 12 to February 26, 2011. The events were organized across three major cities: Ranchi, Jamshedpur, and Dhanbad. The opening and closing ceremonies were conducted at the Birsa Munda Athletics Stadium in Ranchi. The mascot for the games was a baby forest deer named Chhauua, representing the state's rich wildlife and the local Chhau dance tradition. These games were significant as they marked the first time Jharkhand hosted the National Games since its formation in 2000.

Explanation

The principle of eye for an eye and tooth for a tooth is the fundamental basis of the Retributive theory of Justice, historically known as lex talionis. This theory asserts that punishment is a morally acceptable response to crime, where the severity of the penalty should be proportional to the gravity of the offense. It operates on the logic of desert, maintaining that an offender must suffer a harm equivalent to what they inflicted to restore the moral balance of society. Retributive justice focuses on the past act of the criminal rather than the future consequences of the punishment.

Explanation

Merit wants, a concept introduced by economist Richard Musgrave, refer to goods and services that the government considers socially desirable and beneficial for the consumer, often leading to positive externalities. Low cost housing is classified as a merit want because it provides essential shelter and improved living standards for lower-income groups, which would otherwise be under-provided by the free market mechanism. By subsidizing or providing housing, the government ensures a minimum standard of living, reduces homelessness, and promotes social welfare, as the social benefits of a stable and healthy population exceed the private benefits to the individual inhabitants.

Explanation

The Torah, also referred to as the Tohra, is the central and most sacred text of Judaism. It consists of the first five books of the Hebrew Bible: Genesis, Exodus, Leviticus, Numbers, and Deuteronomy. These books are believed by Jewish tradition to have been revealed by God to Moses on Mount Sinai. The Torah serves as the foundational legal and ethical framework for the Jewish faith, containing the 613 mitzvot (commandments) and the Ten Commandments which guide all aspects of religious and daily life. It is traditionally written by a scribe on a parchment scroll and is housed in the Holy Ark of the synagogue, where it is read during public worship services.

Explanation

The 98th edition of the Indian Science Congress was hosted by SRM University in Chennai from January 3 to 7, 2011. The event was inaugurated by the then Prime Minister of India, Dr. Manmohan Singh. The focal theme of this session was Quality Education and Excellence in Scientific Research in Indian Universities, which aimed to address the critical need for improving the standards of scientific research and education across the Indian higher education landscape to foster innovation.

Explanation

Drying oils are liquid fats that harden into a tough, solid film after being exposed to air for a period of time. This hardening process, known as drying or curing, is a result of a chemical reaction called oxidative polymerization. The presence of a high proportion of unsaturated fatty acids, particularly polyunsaturated fatty acids like linolenic or linoleic acid, is essential for this process. These unsaturated fatty acids contain multiple carbon-carbon double bonds that react with atmospheric oxygen. The reaction creates cross-links between the triglyceride chains, transforming the liquid oil into a stable, solid polymer network. This characteristic makes drying oils highly valuable as binders in oil paints, varnishes, and printing inks.

Explanation

Conspicuous consumption is a term introduced by the sociologist and economist Thorstein Veblen in his 1899 work, The Theory of the Leisure Class. It describes the act of spending money on luxury goods and services specifically to publicly display economic power and social status. The primary motivation behind this behavior is to gain social acknowledgement and prestige rather than to satisfy a practical or functional need. By consuming highly visible and expensive items, an individual signals their wealth to others, thereby reinforcing or elevating their position within the social hierarchy.

Explanation

Carotenoids are a class of accessory pigments, including carotenes and xanthophylls, that are present in the plastids of plant cells. These pigments are responsible for absorbing light energy in the blue-violet and blue-green regions of the visible spectrum and reflecting longer wavelengths, which appear to the human eye as yellow, orange, and red. During the spring and summer, the high concentration of green chlorophyll masks these colors. However, as chlorophyll decomposes in the autumn due to changes in temperature and light, the more stable carotenoids become visible, leading to the bright coloration of autumn leaves.

Explanation

The first automated banking machine, a precursor to the modern ATM known as the Bankograph, was installed by the First National City Bank (now known as Citibank) in New York City in 1961. Invented by Luther George Simjian, the Bankograph was an automated envelope deposit machine that allowed customers to deposit cash, checks, and coins without the assistance of a teller. While the first cash-dispensing ATM was later introduced by Barclays in 1967, Citibank's 1961 installation is recognized as the earliest implementation of automated teller technology in the world. The bank's early adoption of this technology laid the groundwork for the global expansion of automated banking services.

Explanation

Due to the vast distance between the Sun and the Earth, the light rays originating from the Sun are effectively parallel by the time they reach the Earth's surface. In optics and physics, light from a distant source is always treated as a parallel beam.

Explanation

In the 2001 Census of India, Nagaland recorded the highest decadal population growth rate among all states in the country. During the period between 1991 and 2001, Nagaland experienced a population increase of 64.53 percent. This was exceptionally high compared to the national average decadal growth rate of 21.54 percent for the same period. The significant rise in population during this decade made Nagaland the leader in demographic growth for that census cycle.

Explanation

The Earth's magnetic field lines originate near the geographic South Pole (where the magnetic north pole is located) and travel toward the geographic North Pole (where the magnetic south pole is located). Thus, relative to the Earth's geographic axis, the external magnetic field extends from south to north.

Explanation

Alfred Marshall is widely regarded as the master of partial analysis, specifically through his development of Partial Equilibrium Analysis. This method involves studying the behavior of a single market, individual consumer, or firm in isolation by assuming that all other external factors remain constant. Marshall popularized the use of the ceteris paribus (all other things being equal) clause to simplify the complexities of the overall economy, allowing for a detailed investigation of how supply and demand interact to determine prices and quantities within a specific sector. His approach, detailed in his influential 1890 work Principles of Economics, provided the analytical tools such as demand curves and price elasticity that form the bedrock of modern microeconomics. By focusing on specific variables while holding the broader economic environment fixed, Marshall made economic theory more manageable and applicable to real-world market scenarios.

Explanation

Under Article 341 of the Constitution of India, the President is empowered to specify the castes, races, or tribes that shall be deemed to be Scheduled Castes for the purposes of the Constitution. While the President acts in consultation with the Governor of a state, the final authority to issue the public notification rests with the President.

Explanation

Polar bears provide a unique biological model for studying metabolic health because they can accumulate immense amounts of body fat—often reaching levels that would be morbidly obese in humans—without developing insulin resistance. During their active feeding periods, they consume a diet extremely high in saturated fats from seals, yet their bodies possess genetic adaptations that prevent the chronic inflammation and metabolic syndrome typically seen in humans. By investigating how polar bears maintain high insulin sensitivity and manage lipid metabolism under these extreme conditions, scientists aim to identify genetic and molecular pathways that could be used to treat or cure Type II diabetes in humans.

Explanation

In a vacuum, the speed of all electromagnetic waves is a fundamental physical constant, approximately c = 299,792,458 m/s. According to the principles of classical electromagnetism and special relativity, a vacuum is a non-dispersive medium. This means that the velocity of light is independent of its frequency or wavelength. Since different colors such as blue, red, and green are simply electromagnetic waves of varying frequencies within the visible spectrum, they all travel at the exact same speed when no matter is present to interact with them. Dispersion, which causes different colors to travel at different velocities, only occurs when light passes through a refractive medium like glass, water, or air.

Explanation

Hydroelectric power generation depends on the gravitational potential energy possessed by water stored at a high elevation, typically in a reservoir behind a dam. This potential energy is determined by the mass of the water and its vertical distance from the turbines, represented by the formula Eₚ = mgh. When the gates are opened, this stored energy is converted into kinetic energy as the water flows downward through penstocks. This kinetic energy subsequently rotates the turbine blades, which are connected to a generator to produce electrical energy. Consequently, the elevation and storage of water provide the essential energy source that is transformed within the power station.

Explanation

Mamta Sharma was appointed as the Chairperson of the National Commission for Women in August 2011, succeeding Girija Vyas. A veteran politician from Rajasthan and a former MLA from the Bundi constituency, she served a three-year tenure leading the statutory body. Her role involved advising the government on policy matters affecting women and looking into complaints related to the deprivation of women's rights and the non-implementation of laws enacted to provide protection to women.

Explanation

Double Taxation Avoidance Agreements (DTAA) are tax treaties signed between two or more countries to ensure that a taxpayer is not taxed twice on the same income in different jurisdictions. By providing clarity on taxing rights and offering relief through tax credits or exemptions, these agreements eliminate fiscal barriers that discourage international business operations. This reduction in the tax burden and the increased certainty regarding tax liabilities make cross-border commerce more attractive, thereby directly promoting bilateral trade and strengthening economic cooperation between the signatory nations. DTAAs also provide a framework for the exchange of information and the prevention of tax evasion, which further stabilizes the environment for international trade.

Explanation

The High Court of Kerala was established on November 1, 1956, following the States Reorganisation Act, with its seat located at Ernakulam in Kochi. It serves as the apex court for the state of Kerala and the Union Territory of Lakshadweep. The court functions from a building complex situated in the city of Kochi, which is part of the Ernakulam district, and it exercises original, appellate, and revisional jurisdiction over the territories mentioned.

Explanation

Emphysema is a chronic respiratory disease characterized by the progressive destruction of the alveoli, the tiny air sacs in the lungs where gas exchange occurs. Exposure to air pollutants, such as sulfur dioxide, nitrogen oxides, and fine particulate matter, causes persistent inflammation and oxidative stress in the lung tissue. This leads to the breakdown of elastin, a protein that maintains the structural integrity of the alveolar walls, resulting in permanent damage and reduced lung elasticity. As the surface area for oxygen absorption diminishes, the heart and lungs must work significantly harder, often leading to respiratory failure or related cardiac strain. Environmental health data indicates that the widespread prevalence of such chronic obstructive conditions leads to a higher total mortality rate compared to lung cancer, as emphysema affects a larger demographic over a longer duration of exposure.

Explanation

West Bengal is characterized by a very high population density due to its location in the fertile Indo-Gangetic plains and the Ganges-Brahmaputra delta, which support intensive agriculture and large human settlements. According to the 2001 Census, West Bengal was the most densely populated state in India with 903 persons per square kilometer. By the 2011 Census, the state's population density increased to 1,028 persons per square kilometer. The high concentration of people is sustained by the state's rich alluvial soil, favorable climatic conditions for multiple cropping, and significant urban-industrial development along the Hooghly river. Among the states listed, West Bengal maintains the highest number of inhabitants per unit of land area.

Explanation

Lack of employment opportunities serves as a primary push factor in the phenomenon of brain drain. In many developing nations, there is a significant discrepancy between the output of the higher education system and the capacity of the local economy to absorb specialized talent. When a country produces a high volume of skilled professionals, such as scientists, engineers, and doctors, but lacks the industrial base, research facilities, or corporate infrastructure to provide them with suitable roles, those individuals face chronic underemployment or unemployment. This absence of professional avenues effectively compels the domestic workforce to seek international markets where their expertise can be effectively applied and rewarded.

Explanation

The Human Development Index (HDI) was created by the United Nations Development Programme (UNDP) and first featured in the 1990 Human Development Report. It was developed by a team of economists led by Mahbub ul Haq and Amartya Sen with the objective of shifting the focus of development economics from national income accounting to people-centered policies. The index is a composite statistic that measures average achievement in three basic dimensions of human development: a long and healthy life, knowledge, and a decent standard of living. By using this metric, the UNDP provides a broader perspective on a country's level of development than traditional economic indicators like GDP.

Explanation

Jupiter is the largest planet in our solar system, both in terms of mass and volume. It is a gas giant with a mean radius of approximately 69,911 kilometers, which is about 11 times the radius of Earth. Its mass is more than 300 times that of Earth and is approximately 2.5 times the mass of all the other planets in the solar system combined. Composed primarily of hydrogen and helium, Jupiter's immense gravitational pull and massive size make it the dominant planetary body in the solar system.

Explanation

Red and yellow soil is the most extensive zonal soil group found in the Peninsular plateau of India. It develops primarily on crystalline igneous rocks in areas of low rainfall, particularly in the eastern and southern parts of the Deccan Plateau. These soils cover vast tracts of Tamil Nadu, Karnataka, southeast Maharashtra, Andhra Pradesh, Chhattisgarh, and Odisha. The characteristic red color of this soil is attributed to the wide diffusion of iron in crystalline and metamorphic rocks, whereas it appears yellow when it exists in a hydrated form. As a zonal soil, its formation is heavily influenced by the long-term climatic conditions and the parent rock material of the ancient Gondwana landmass.

Explanation

The Samhitas represent the most ancient layer of Vedic literature and function as the primary collections of hymns, prayers, and liturgical formulas. Within this category, the Yajurveda Samhita is specifically distinguished as the collection of prose mantras and sacrificial formulas. While other Vedas like the Rigveda are composed in verse, the Yajurveda provides the necessary prose structure for the ritualistic application of these poems. As the fundamental collections of Vedic material, the Samhitas organize the poetic and formulaic elements into a systematic framework for recitation and ceremonial use.

Explanation

Demography is the scientific study of human populations, focusing on their size, structure, and distribution across space and time. It utilizes statistical analysis to track changes in population dynamics through the measurement of vital processes such as fertility, mortality, and migration. By examining demographic data like age, gender, and birth rates, researchers can understand how populations evolve and predict future trends, which is critical for government planning, economic forecasting, and social policy development. The term is derived from the Greek words demos, meaning people, and graphein, meaning to describe or write.

Explanation

Salt petre, also known as nitre or Indian saltpetre, is the common name for the chemical compound potassium nitrate (KNO₃). It is a naturally occurring mineral salt that is highly soluble in water and acts as a strong oxidizing agent. Historically, it has been an essential ingredient in the manufacture of gunpowder and continues to be extensively used in the production of fertilizers, fireworks, and as a food preservative.

Explanation

Pakistan: Beyond the Crisis State is a comprehensive collection of essays edited by Maleeha Lodhi, first published in 2011. Maleeha Lodhi is a prominent Pakistani diplomat, academic, and journalist who has served as Pakistan's Ambassador to the United States and High Commissioner to the United Kingdom. The book features contributions from various experts and scholars who analyze the historical and contemporary challenges facing Pakistan, covering themes such as governance, the economy, security, and foreign policy, while providing a roadmap for the country to move past its perpetual state of crisis.

Explanation

Ganesh Vasudev Mavlankar, popularly known as Dadasaheb, was the first Speaker of the Lok Sabha, serving from May 15, 1952, until his death in February 1956. He played a foundational role in establishing the rules, procedures, and traditions of the Indian parliamentary system. Prior to the first general elections, he served as the Speaker of the Constituent Assembly (Legislative) from 1947 to 1952 and had also been the President of the Central Legislative Assembly since 1946. Due to his significant contributions to the development of the lower house, Jawaharlal Nehru often referred to him as the Father of the Lok Sabha.

Explanation

The world's first cloned camel, named Injaz, was born on April 8, 2009, at the Camel Reproduction Centre in Dubai, United Arab Emirates. This breakthrough was achieved by a team of researchers led by Dr. Nisar Ahmad Wani using the somatic cell nuclear transfer technique. Injaz was cloned from the ovarian cells of a camel slaughtered for its meat in 2005. The project was significant for the region as it demonstrated advanced biotechnological capabilities aimed at preserving the genetics of high-value racing and milk-producing camels. This achievement established Dubai as a pioneer in camelid cloning and reproductive science.