SSC CHSL Tier 1 2010 General Awareness Questions with Solutions

Explanation

The ionic product of water (Kw) is defined as the product of the molar concentrations of hydrogen ions and hydroxide ions in water.

Kw = [H⁺][OH⁻]

Since concentration is measured in moles per liter (mol L⁻¹), the unit of the ionic product of water is obtained by multiplying the units of both concentration terms.

Kw unit = (mol L⁻¹) × (mol L⁻¹) = mol² L⁻²

In this notation, L is represented as let, making the unit mol² let⁻².

Explanation

Fort William was built by the British East India Company in Calcutta on the eastern banks of the Hooghly River. Construction of the original fort began in 1696 under the supervision of John Goldsborough and was completed in the early 18th century. It was named in honor of King William III of England and served as a key administrative and military stronghold for the British in India.

Explanation

National income comprises the total monetary value of all final goods and services produced within a country during a financial year. The construction of a new house is classified as capital formation or investment expenditure in the national income accounting identity Y = C + I + G + NX. This process generates new physical assets and involves active production, which directly contributes to the flow of goods and services in the economy. The payments made for resources, materials, and labor during the construction process generate factor incomes such as wages, interest, and profits, making it a productive economic activity that is included in the calculation of national income.

Explanation

Forests play a vital role in maintaining the geological balance of the Earth. The extensive root systems of trees bind the soil particles together, thereby preventing soil erosion, landslides, and the degradation of hilly terrains. By regulating the runoff of rainwater, forests facilitate groundwater recharge and stabilize river banks, preventing river course shifts and silting of riverbeds. This conservation of the physical structure of the landscape, soil, and water resources is essential for preserving the overall geological and environmental stability of a region.

Explanation

The Shipra Path Police Station is located in Mansarovar, Jaipur, Rajasthan. In 2007, it was adjudged as the top police station in the world in an international survey conducted by Altus Global Alliance, a Netherlands-based organization. The survey evaluated police stations globally across various parameters, including community policing, infrastructure, response time, and citizen-friendliness.

Explanation

Guru Gobind Singh was the tenth and the last human Sikh Guru. He assumed the leadership of the Sikhs at the young age of nine following the martyrdom of his father, Guru Tegh Bahadur. In 1699, he founded the Khalsa warrior community, introducing the five Ks as symbols of faith for initiated Sikhs. Before his passing in 1708, he declared the sacred scripture, the Guru Granth Sahib, as the eternal living Guru of the Sikh community, effectively ending the succession of human Gurus.

Explanation

The Swaraj Party was established in January 1923 following the suspension of the Non-Cooperation Movement by Mahatma Gandhi in February 1922 after the Chauri Chaura incident. Leaders like Chittaranjan Das and Motilal Nehru advocated for entering the legislative councils to oppose British policies from within, rather than boycotting them. When their proposal for council entry was rejected at the Gaya session of the Indian National Congress in December 1922, they resigned from their posts and formed the Congress-Khilafat Swarajya Party, commonly known as the Swaraj Party, with C.R. Das as president and Motilal Nehru as one of the secretaries.

Explanation

The break-even point is the specific level of operations where total revenue equals total cost. At this juncture, a business generates zero net profit, experiencing neither a gain nor a loss. Mathematically, it is represented by the equation:

Total Revenue = Total Cost

Achieving this point indicates that all fixed and variable costs have been fully recovered from sales revenues. It serves as a critical threshold in financial analysis, marking the transition from operating at a loss to generating profit on subsequent units sold.

Explanation

When two ice cubes are pressed against each other, the high pressure applied at the contact interface lowers the melting point of the ice, causing a thin layer of ice at the surface to melt into liquid water. When the pressure is released, the melting point returns to normal, and this thin layer of water refreezes. During this refreezing process, the water molecules at the interface of both cubes interact and form strong intermolecular hydrogen bonds with each other. These hydrogen bonds pull the water molecules of both surfaces together and hold them in a rigid lattice structure, uniting the two separate ice cubes into a single block.

Explanation

When milk is churned in a cream separator, it is subjected to rapid rotation. This circular motion generates centrifugal force, which acts outwards from the axis of rotation. Because different components of milk have different densities, the heavier skimmed milk experiences a greater outward force and is thrown towards the outer walls of the container. Consequently, the lighter cream particles are displaced towards the center of rotation, enabling their separation from the milk.

Explanation

An electric charge at rest produces only an electric field in its surroundings. When the charge is in motion, it constitutes an electric current. According to electromagnetism, this moving charge or electric current generates a magnetic field in the surrounding space. This relationship is established by Oersted's experiment and quantified by the Biot-Savart law and Ampere's law, which show that moving charges are the fundamental source of magnetic fields.

Explanation

Rice is the staple food crop for a majority of the Indian population and occupies the largest cultivated area in the country. It is grown extensively under diverse climatic and soil conditions across India, covering over 43 million hectares of the net sown area, which is approximately one-fourth of the total cropped area of the nation. This extensive cultivation makes it the leading crop in terms of agricultural area in India.

Explanation

The SI unit of electric charge is the coulomb, represented by the symbol C. It is defined as the amount of electric charge transported by a constant current of one ampere in one second. This relationship is given by the formula:

Q = I × t

where Q is the electric charge in coulombs, I is the current in amperes, and t is the time in seconds. This means one coulomb is equivalent to one ampere-second (1 C = 1 A s). Additionally, one coulomb represents the magnitude of charge of approximately 6.242 × 10¹⁸ electrons or protons.

Explanation

Under perfect competition, an individual firm is a price taker because it contributes a negligible fraction of the total market supply and sells a homogeneous product. The market price is determined solely by the intersection of market demand and market supply. Since the firm can sell any quantity of its product at this established market price, it faces a perfectly elastic demand curve. Graphically, this is represented as a horizontal straight line parallel to the ox-axis (the quantity axis) at the level of the ruling market price, where price, average revenue, and marginal revenue are all equal and constant.

Explanation

Rajendra Chola I, who reigned from 1014 to 1044 CE, conducted a famous military expedition to North India between 1019 and 1021 CE. During this campaign, his forces marched up to the Ganges river, defeating several rulers, including the Pala king Mahipala of Bengal. To commemorate this monumental victory, he brought the sacred water of the Ganges to the south and assumed the title Gangaikonda Chola, meaning the Chola who conquered the Ganges. He established a new capital named Gangaikonda Cholapuram and constructed a massive artificial lake called Chola Gangam to store the holy water.

Explanation

The writ of Habeas Corpus, which literally translates to "to have the body of", is an essential constitutional remedy used to protect individual liberty against illegal and arbitrary confinement. Under Article 32 and Article 226 of the Constitution of India, the Supreme Court and High Courts can issue this writ to any authority or person who has detained another. It commands the detaining authority to produce the detained person before the court so that the court can examine the validity and legality of the detention. If the court finds the detention to be unlawful or without legal justification, as in the case of wrongful police detention, it orders the immediate release of the individual.

Explanation

A laser (Light Amplification by Stimulated Emission of Radiation) produces a light beam that is highly directional. This characteristic is a result of the stimulated emission process, where all the emitted photons travel in the exact same direction as the stimulating photons. Consequently, the resulting beam is extremely narrow and maintains its focus with very little divergence even over immense distances.

Explanation

Nitrogen is the most abundant constituent of the Earth's atmosphere, making up approximately 78.08% of dry air by volume. It is a diatomic gas that remains chemically inert under normal surface temperatures and pressures, playing a fundamental role in diluting oxygen to prevent rapid combustion and supporting life through the nitrogen cycle.

Explanation

Putrajaya is the federal administrative center of Malaysia. It was established in 1995 to serve as the new administrative capital, and the seat of government was moved there in 1999 to ease congestion in the official national capital, Kuala Lumpur, which remains the legislative capital of the country.

Explanation

Cellulose is a complex carbohydrate and the primary structural component of the cell walls in green plants. In human nutrition, cellulose is classified as an insoluble dietary fiber because the human digestive system lacks the enzyme cellulase required to break its beta-glycosidic bonds. As a result, cellulose passes through the gastrointestinal tract largely intact, where it absorbs water, adds bulk to the stool, and stimulates peristalsis to facilitate smooth digestion and regular bowel movements.

Explanation

Tuberculosis is an infectious disease caused by the bacterium Mycobacterium tuberculosis. This pathogenic bacterium primarily targets the lungs, resulting in pulmonary tuberculosis, but it can also spread to and damage other organs such as the kidneys, spine, and brain. The transmission of Mycobacterium tuberculosis occurs when an individual with active pulmonary disease expels infectious aerosol droplets through coughing, sneezing, speaking, or singing, which are then inhaled by a susceptible host.

Explanation

The Ministry of Agriculture, through the Indian Council of Agricultural Research under the National Agricultural Research Project, classified India into 127 agro-climatic zones. This micro-level classification was conceptualized to conduct location-specific, need-based agricultural research targeted at regional ecological situations. The division is based on critical parameters such as soil type, temperature, rainfall, water resources, topography, and cropping patterns to optimize agricultural planning and productivity across the country.

Explanation

South America is the wettest continent on Earth, receiving the highest average annual precipitation of any continent. This is primarily because a massive portion of its landmass lies within the equatorial and tropical regions, situated under the Intertropical Convergence Zone (ITCZ). In this zone, intense solar heating leads to rapid evaporation, convective updrafts, and frequent, heavy rainfall.

Furthermore, the continent is home to the Amazon River basin, which contains the largest tropical rainforest in the world. The vast dense vegetation contributes to a continuous water cycle through transpiration, regenerating atmospheric moisture and triggering recurrent rainfall. Additionally, the Andes mountain range acts as a colossal geographic barrier, forcing moisture-laden trade winds from the Atlantic Ocean to rise, cool, and condense. This orographic effect results in immense precipitation along the eastern slopes of the Andes and the vast lowlands of the Amazon.

Explanation

Sanitary landfilling is a controlled method of solid waste disposal where waste is deposited in thin, compacted layers in low-lying land areas or excavations. At the end of each day's operation, or more frequently, the waste is covered with a layer of compacted earth or soil. This soil cover acts as a barrier that prevents the breeding of flies and rodents, minimizes windblown litter, controls odors, reduces fire hazards, and limits rainwater infiltration, ensuring safe and hygienic waste management.

Explanation

Under the Noise Pollution (Regulation and Control) Rules, 2000, formulated by the Central Pollution Control Board of India, ambient noise standards are specified for different zones to prevent adverse effects on human health. For residential areas, the permissible noise level during the night time, which is defined from 10:00 PM to 6:00 AM, is set at 45 dB (A) to ensure a quiet environment that supports uninterrupted sleep and well-being.

Explanation

Bimal Jalan, the former Governor of the Reserve Bank of India, authored the book "The Future of India: Politics, Economics and Governance", which was published in 2005. The book examines the critical economic, political, and governance challenges confronting India, drawing on his extensive experience in public policy and administration to propose key structural reforms necessary for the country's progress.

Explanation

The Contingency Fund of India is established under Article 267(1) of the Constitution of India as an imprest placed at the disposal of the President of India. This fund is designed to meet urgent, unforeseen expenditures pending authorization by Parliament. Because the primary purpose of this fund is to enable the executive to act swiftly during emergencies, expenditures from it do not require prior budgetary approval or parliamentary authorization every year. Instead, any amount withdrawn from this fund is subsequently recouped from the Consolidated Fund of India after obtaining parliamentary approval.

Explanation

The Baisakhi Festival of 1999 is historically significant because it marked the tercentenary, or 300th anniversary, of the foundation of the Khalsa Panth. The Khalsa order was established by the tenth Sikh Guru, Guru Gobind Singh Ji, on Baisakhi day in 1699 at Anandpur Sahib. Because the event in 1999 commemorated 300 years of the Khalsa rather than 100 years, the centenary description is incorrect.

Explanation

Albumin is a major plasma protein synthesized by the liver. In a healthy kidney, the glomerular filtration membrane prevents large proteins like albumin from filtering into the renal tubule, ensuring that it remains in the bloodstream. The presence of albumin in urine, a condition known as albuminuria, indicates glomerular damage or filtration barrier impairment, making it an abnormal constituent of urine.

Explanation

Value added is calculated by subtracting the value of intermediate consumption from the total value of output. Therefore, knowing the value of intermediate consumption allows one to distinguish between the value of output and the value added.

Explanation

The common cold is a viral infectious disease of the upper respiratory tract. It is most frequently caused by rhinoviruses, which account for a majority of all cases. Other viruses such as coronaviruses, adenoviruses, respiratory syncytial virus, and enteroviruses can also cause this infection. The virus enters the body through the mouth, eyes, or nose and spreads easily through airborne droplets from coughing or sneezing, as well as through direct contact with contaminated surfaces.

Explanation

The 3rd Commonwealth Youth Games were hosted in Pune, Maharashtra, India, from October 12 to October 18, 2008. The multi-sport event was conducted at the Shiv Chhatrapati Sports Complex in Balewadi, Pune. It saw participation from 71 Commonwealth nations and territories, competing across nine different sports disciplines, and served as a major preparatory event for the 2010 Commonwealth Games held in Delhi.

Explanation

The term PC-XT stands for Personal Computer Extended Technology. It was a line of personal computers introduced by IBM in March 1983 as the successor to the original IBM PC. The XT designation denoted the extended technology because it offered enhanced hardware capabilities, including a built-in 10 megabyte hard disk drive, more expansion slots, and increased system memory compared to its predecessor.

Explanation

Transfer payments refer to unilateral, one-way payments or receipts made without any corresponding exchange of goods, services, or factor inputs. Because no productive service or contribution to current output is rendered in return for these transactions, they are classified as non-factor incomes and are excluded from national income estimates. A gift received from a friend is a personal transaction with no reciprocal productive economic activity, perfectly defining a transfer payment.

Explanation

For a monopolist, the demand curve is downward-sloping, meaning the price must be lowered to sell additional units. The total revenue is TR = P × Q, where P is the price and Q is the quantity. The marginal revenue is the derivative of total revenue with respect to quantity:

MR = d(TR)/dQ = P + Q × (dP/dQ)

Since the demand curve slopes downward, the change in price with respect to quantity, dP/dQ, is negative. Consequently, the term Q × (dP/dQ) is negative for any positive quantity. This mathematical relationship ensures that MR < P, making the marginal revenue of a monopolist less than the price of the good.

Explanation

Indian agriculture is deeply dependent on seasonal monsoonal rainfall, which is why it is historically described as a gamble on the monsoon. Since a major portion of the agricultural land in India lacks perennial irrigation facilities, the timing, distribution, and volume of rainfall directly determine the success of crop cultivation, sowing cycles, and overall agricultural productivity across the country.

Explanation

Chandragupta II assumed the title of Vikramaditya, meaning "Sun of Valor", to commemorate his military victories, particularly his decisive conquest of the Shaka Kshatrapas of western India. This title associated him with the legendary, benevolent ruler Vikramaditya of Ujjain, who was celebrated in Indian folklore for his courage, justice, and patronage of art and literature.

Explanation

The United Nations General Assembly adopted a resolution on June 15, 2007, to establish October 2nd as the International Day of Non-Violence. This date commemorates the birthday of Mahatma Gandhi, who led the Indian independence movement and pioneered the philosophy and strategy of non-violence. The global observance aims to disseminate the message of non-violence, peace, and tolerance through public education and awareness.

Explanation

Water absorption by root hairs occurs primarily through osmosis. The cell sap inside the root hair cells contains a higher concentration of solutes, which means it has a lower water potential compared to the surrounding soil water. Since the cell membrane of the root hair acts as a semi-permeable membrane, water molecules spontaneously move from the region of higher water potential in the soil to the region of lower water potential inside the root hair cell. This passive movement of water across a semi-permeable membrane down a concentration gradient is the process of osmosis.

Explanation

Nitrogen is an essential macronutrient that plants require in the greatest quantity compared to any other mineral nutrient. It is absorbed from the soil primarily in the form of nitrate ions (NO₃⁻), and in smaller amounts as nitrite (NO₂⁻) or ammonium (NH₄⁺) ions.

This element is vital for all plant parts, especially meristematic tissues and metabolically active cells. It serves as a major structural and functional constituent of fundamental organic compounds, including amino acids, proteins, nucleic acids, chlorophyll, vitamins, and various plant hormones, which are indispensable for plant growth, development, and photosynthesis.

Explanation

Badrinath Temple, situated along the Alaknanda River in Uttarakhand, is dedicated to Lord Vishnu, who is worshipped in the sanctum as Badrinarayan in the form of a self-manifested black stone Shaligram statue. Kedarnath Temple, located near the Mandakini River, is dedicated to Lord Shiva and houses a natural rock lingam which is worshipped as one of the twelve sacred Jyotirlingas.

Explanation

The Peru Current, also known as the Humboldt Current, is a cold, low-salinity eastern boundary current that flows northwards along the western coast of South America in the South Pacific Ocean. It is a major component of the South Pacific subtropical gyre and is not located in the Atlantic Ocean.

Explanation

The Drafting Committee was appointed by the Constituent Assembly on August 29, 1947, to prepare the draft of the Constitution of India. Dr. B. R. Ambedkar served as the Chairman of this committee. Under his leadership, the committee examined various constitutional proposals and drafted the foundational document of independent India, which was adopted on November 26, 1949. His monumental role in steering the drafting process earned him recognition as the father of the Indian Constitution.

Explanation

The energy of a photon of light is determined by the formula E = hν, where h is Planck constant and ν is the frequency of the electromagnetic wave. When a light wave undergoes reflection, its frequency and wavelength remain constant, and only the direction of propagation changes. Since the frequency of the light is not affected by the angle at which it strikes the reflecting surface, the energy of the photons in the reflected light does not depend on the angle of incidence.

Explanation

Vegetable oils are unsaturated organic compounds containing carbon-to-carbon double bonds. The process of converting these liquid vegetable oils into solid saturated fats is known as hydrogenation. In this chemical reaction, hydrogen gas (H₂) is passed through the heated vegetable oil in the presence of a metal catalyst such as finely divided nickel, platinum, or palladium. The hydrogen atoms add directly across the double bonds of the unsaturated fatty acid chains, converting them into single bonds. This chemical reduction increases the melting point of the substance, transforming the liquid oil into a semi-solid or solid saturated fat like vanaspati ghee.

Explanation

Carbohydrates are the primary source of energy for the human body. During digestion, complex carbohydrates are broken down into simple sugars, mainly glucose. Glucose is absorbed into the bloodstream and transported to cells throughout the body, where it undergoes cellular respiration to produce adenosine triphosphate (ATP), the main energy currency of cells. This process provides the immediate and most efficient energy required for all physical activities, metabolic functions, and brain operations.

Explanation

Both cockroach and silverfish are insects belonging to the phylum Arthropoda. Arthropods typically possess an open circulatory system, where the circulatory fluid, known as hemolymph, is not enclosed within a continuous network of blood vessels. Instead, the heart pumps the hemolymph directly into large body cavities and sinuses called the hemocoel. Within the hemocoel, the internal organs are suspended and directly bathed in the hemolymph, allowing for the direct exchange of nutrients, hormones, and metabolic wastes.

Explanation

Bleaching powder is chemically known as calcium hypochlorite, represented by the chemical formula Ca(OCl)₂. It is produced industrially by treating slaked lime, which is calcium hydroxide Ca(OH)₂, with chlorine gas. Calcium hypochlorite serves as the primary active ingredient in commercial bleaching powder, acting as a powerful oxidizing agent widely used for disinfecting drinking water, treating swimming pool water, and bleaching textiles and paper pulp.

Explanation

The Fundamental Duties of Indian citizens were incorporated into the Constitution of India in 1976 through the 42nd Constitutional Amendment Act. This amendment was enacted based on the recommendations of the Swaran Singh Committee, which had been set up to suggest the inclusion of duties to remind citizens of their responsibilities while enjoying their fundamental rights. This addition introduced Part IVA and Article 51A to the Constitution, which initially listed ten fundamental duties.

Explanation

The esterification test is used to identify the alcoholic (-OH) group, where the alcohol reacts with a carboxylic acid in the presence of concentrated sulfuric acid to produce a sweet, fruity-smelling ester. The FeCl3 test is specifically used to identify the phenolic -OH group, not the aliphatic alcoholic -OH group.