SSC CHSL Tier 1 2012 General Awareness Questions with Solutions

Explanation

Open Market Operations (OMOs) refer to the conduct of sale and purchase of government securities and treasury bills by the Reserve Bank of India (RBI) to and from the market. This mechanism serves as an important quantitative monetary policy tool. By buying government securities, the RBI injects liquidity into the banking system, thereby increasing the cash reserves of banks and encouraging credit creation. Conversely, by selling government securities, the RBI absorbs excess liquidity from the economy, which helps in controlling inflationary pressures.

Explanation

Disguised unemployment refers to a situation where more people are engaged in a job than are actually required. It is highly prevalent in the agricultural sector of developing nations, where family members work on a small plot of land because of a lack of alternative employment opportunities. Since the same level of output can be produced with fewer workers, the contribution of the surplus labor is redundant, meaning their marginal productivity is zero. Removing these surplus workers from the land does not cause any decline in total agricultural production.

Explanation

The Indian economy has historically faced a significant structural imbalance rather than a balance between heavy industry and wage goods. During the planning era, particularly starting with the Second Five-Year Plan, India adopted the Mahalanobis model of development. This strategy heavily prioritized capital-intensive heavy and basic industries over the wage goods sector, which produced essential consumer items. This structural bias led to persistent shortages of essential goods, inflationary pressures, and an overall lack of balance between heavy industries and wage goods production in the country.

Explanation

Professor K.T. Shah, an active member of the Constituent Assembly of India, made this famous observation regarding the Directive Principles of State Policy contained in Part IV of the Constitution. He criticized their non-justiciable nature, pointing out that because they cannot be legally enforced in a court of law, they function essentially as a bank cheque that can only be cashed when the bank has sufficient resources and finds it convenient to do so. This analogy highlighted the concern that without legal backing, these principles might remain mere moral precepts depending entirely on the goodwill and financial capacity of the governing state.

Explanation

The word "Federal" is not mentioned anywhere in the Constitution of India. Instead, Article 1 of the Constitution describes India as a "Union of States." This terminology was deliberately chosen by the framers of the Constitution to indicate that the Indian polity is not the result of an agreement among sovereign states, and that no state has the right to secede from the Union. While the Indian administrative and political structure possesses several federal features, the text of the Constitution avoids the use of the term "federal" or "federation" entirely.

Explanation

The Balwant Rai Mehta Committee was appointed by the Government of India in January 1957 to examine the working of the Community Development Programme and the National Extension Service, and to suggest measures for their better functioning. In its report submitted in November 1957, the committee recommended the establishment of a scheme of democratic decentralisation, which came to be known as Panchayati Raj. The committee proposed a three-tier Panchayati Raj system consisting of Gram Panchayats at the village level, Panchayat Samitis at the block level, and Zilla Parishads at the district level. Rajasthan became the first state to establish Panchayati Raj when the system was inaugurated in Nagaur district on October 2, 1959, based on these recommendations.

Explanation

The Fourth Schedule of the Constitution of India contains provisions related to the allocation of seats in the Rajya Sabha (the Council of States) to the various States and Union Territories. Under Articles 4(1) and 80(2) of the Constitution, the representation of each state and union territory in the Rajya Sabha is determined on the basis of its population.

Explanation

Under the Seventh Schedule of the Constitution of India, Trade unions; industrial and labor disputes is placed under Entry 22 of List III, which is the Concurrent List. This means that both the Parliament and the State Legislatures have the legislative competence to make laws on this subject, allowing for nationwide uniformity in labor regulations while giving states the flexibility to address local labor issues.

Explanation

The 52nd Constitutional Amendment Act of 1985 introduced the Anti-Defection Law in India by inserting the Tenth Schedule into the Constitution. This amendment laid down the provisions for the disqualification of members of Parliament and State Legislatures on the grounds of defection from one political party to another, aiming to bring stability to the parliamentary form of government.

Explanation

James Prinsep, an English scholar, orientalist, and officer of the East India Company mint in Calcutta, successfully deciphered the ancient Brahmi and Kharosthi scripts in 1837. These scripts were used in the rock and pillar edicts of Emperor Ashoka. Prinsep's breakthrough allowed historians to read the inscriptions, identifying the ruler referred to as Devanampiya Piyadasi (Beloved of the Gods) as Emperor Ashoka, which laid the foundation for modern Indian historiography.

Explanation

Krishnadeva Raya, the prominent emperor of the Vijayanagara Empire who ruled from 1509 to 1529, was an accomplished scholar and writer in addition to being a great ruler. He composed the epic Telugu poem Amuktamalyada, which translates to "one who wears and gives away a garland." The work depicts the life story of Andal, the revered Tamil Alvar poet-saint, and her intense devotion to Lord Vishnu. Written in a highly ornate and classical style, Amuktamalyada is considered one of the Panchakavyas of Telugu literature, highlighting the emperor's profound religious devotion and literary genius.

Explanation

Srimanta Sankardev was a prominent fifteenth-sixteenth century saint, scholar, poet, and social-religious reformer who spearheaded the Bhakti movement in Assam. He popularized the Assamese language by using it as a primary medium for his extensive literary, devotional, and theatrical creations. His translation of the Bhagavata Purana into Assamese, along with his compositions of devotional songs called Borgeets and dance-dramas known as Ankia Naat, made religious and philosophical texts accessible to the common masses and laid the foundation for modern Assamese literature.

Explanation

The Mansabdari system was introduced by the Mughal Emperor Akbar in 1571. It served as the foundational administrative framework of the Mughal Empire, determining the rank, status, and salary of government officials and military commanders. The system graded officers into numerical ranks called mansabs, which were divided into two main components: zat, representing the personal status and salary of the noble, and sawar, representing the number of cavalrymen the noble was required to maintain for the imperial army. This system centralized administrative and military control, allowing the emperor to secure a large, disciplined force and ensure the loyalty of the nobility.

Explanation

The Pitt's India Act of 1784 established the Board of Control to represent the British Crown and exercise political supervision over the East India Company's affairs in India. This six-member body was tasked with directing and controlling all matters relating to the civil and military government, as well as the revenues of the British territories in India, effectively initiating a system of dual government.

Explanation

Granite is a plutonic igneous rock composed mainly of quartz and feldspar. Under high temperatures and pressures deep within the Earth's crust, granite undergoes dynamic metamorphism. This high-grade metamorphic process causes the mineral crystals to align and segregate into distinctive alternating light and dark bands, transforming the rock into gneiss.

Explanation

The Red Sea is the odd one out because it is a true marginal sea of the Indian Ocean, maintaining a direct and natural connection to the open world ocean via the Bab-el-Mandeb Strait and the Gulf of Aden. Geologically, it lies in a rift valley formed by the active tectonic separation of the Arabian and African plates, making it an integral part of the global oceanic system, whereas the other listed bodies are landlocked or semi-enclosed inland basins lacking direct open-ocean connections.

Explanation

Insolation is the term used to describe the solar radiation that reaches the Earth's atmosphere and surface. The word is derived from incoming solar radiation. It represents the amount of electromagnetic energy from the sun that is intercepted by a unit area of the Earth's surface over a specific time period.

Explanation

The sugar industry is a classic example of a raw-material-oriented industry because its primary raw material, sugarcane, is weight-losing and highly perishable. Once harvested, sugarcane begins to lose its sucrose content rapidly due to moisture loss and chemical inversion. Additionally, sugarcane is a bulky material, and the weight of the finished sugar produced is only about 9% to 12% of the weight of the raw cane. Transporting such a heavy, weight-losing, and perishable agricultural input over long distances is highly uneconomical. Therefore, processing facilities must be located in close proximity to the cultivation fields to ensure immediate crushing after harvest.

Explanation

Australia is the world's leading producer of wool, contributing approximately 25% of the total global wool supply. This dominant position is supported by massive populations of Merino sheep, which are highly regarded for producing fine, high-quality apparel wool. The industry is highly developed across Australia's agricultural belts, enabling it to lead both in production and global exports of greasy wool.

Explanation

Urease is an enzyme that catalyzes the hydrolysis of urea into carbon dioxide and ammonia. Red gram (Cajanus cajan, commonly known as pigeon pea) is a major plant source from which this enzyme is obtained and purified for biochemical research and various laboratory applications.

Explanation

Nerve cells, also known as neurons, are the longest cells in the human body. They are specialized for transmitting electrical impulses over long distances to facilitate communication between the brain, spinal cord, and the rest of the body. The long, thin projection of a neuron, called an axon, can extend significantly. For instance, the motor and sensory neurons within the sciatic nerve stretch from the lower spinal cord down to the feet, reaching lengths of up to 1 meter or more in an adult.

Explanation

Saffron is obtained from the flower of Crocus sativus, commonly known as the saffron crocus. The commercially valuable spice consists of the dried, vivid crimson stigmas and the styles, which are the thread-like female reproductive structures of the flower. Each flower yields only three stigmas, which must be carefully harvested by hand and dried, making saffron one of the most expensive spices in the world by weight.

Explanation

Graves' disease is an autoimmune disorder characterized by the hyperactivity of the thyroid gland, also known as hyperthyroidism. In this condition, the body's immune system mistakenly produces antibodies known as thyroid-stimulating immunoglobulins. These antibodies bind to the thyroid-stimulating hormone receptors on the thyroid gland, mimicking the action of thyroid-stimulating hormone from the pituitary gland and continuously stimulating the thyroid. This leads to an overproduction and excess secretion of thyroid hormones, specifically thyroxine and triiodothyronine, accelerating the body's metabolic rate and causing symptoms such as rapid heart rate, weight loss, and muscle weakness.

Explanation

The Sinoatrial (S.A.) node is known as the primary pacemaker of the heart because it possesses the highest rate of spontaneous depolarization among all cardiac cells. Located in the superior wall of the right atrium, it generates regular electrical impulses (action potentials) at an intrinsic rate of about 60 to 100 beats per minute. These electrical signals spread rapidly throughout the atria and the rest of the cardiac conduction system, initiating the rhythmic contraction and relaxation of the heart muscles that constitutes the heartbeat.

Explanation

Chiropterophily is the term used to describe the pollination of flowering plants by bats. The word originates from Chiroptera, the biological order to which bats belong. Plants adapted for this type of pollination, such as certain species of cacti, agave, and baobab trees, typically exhibit specific traits to attract nocturnal pollinators. These include large, sturdy, bell-shaped flowers that open at night, pale or white coloration to be visible in the dark, strong fruity or musty scents, and the production of copious amounts of nectar and pollen.

Explanation

The fraction of a radioactive substance remaining after n half-lives is given by the formula: N(t)/N₀ = (½)ⁿ

where N₀ is the initial quantity of the substance and N(t) is the quantity remaining at time t. The fraction of the substance that decays is: Decayed fraction = 1 - (½)ⁿ

Substituting the given decayed fraction of 3/4: 1 - (½)ⁿ = ¾ (½)ⁿ = ¼ (½)ⁿ = (½)²

This yields the number of half-lives as n = 2. Since the half-life of the substance is 4 months, the total time t is calculated as: t = n × half-life t = 2 × 4 = 8 months

Explanation

According to Rayleigh scattering, the intensity of scattered light is inversely proportional to the fourth power of its wavelength:

I ∝ 1/λ⁴

In the visible spectrum, red light has the longest wavelength. Because of this, red light undergoes the least amount of scattering by molecules and small particles in the atmosphere like dust, smoke, and moisture. Since it scatters the least, the light can travel much further through the air without losing its intensity, ensuring it remains highly visible from a long distance even in foggy or dusty weather.

Explanation

Polarization is a characteristic property of transverse waves. Light waves are transverse electromagnetic waves in which the oscillations of the electric and magnetic field vectors occur perpendicular to the direction of wave propagation. This allows the vibration of the wave to be restricted to a single plane. Sound waves in mediums like air are longitudinal waves, characterized by particles vibrating parallel to the direction of wave propagation, which makes them incapable of being polarized.

Explanation

Compact Discs (CDs) and Digital Versatile Discs (DVDs) store binary data digitally using microscopic features on a spiral track. The tiny physical indentations or depressions pressed into the reflective aluminum layer of the disc are referred to as pits. When a laser beam is focused on the spinning disc, the light reflects differently off these indented pits compared to the flat areas between them, allowing the optical drive to read the stored digital data as binary ones and zeros.

Explanation

In computer terminology, a vaccine is a program designed to prevent computer viruses from infecting files or storage disks. Much like medical vaccines provide immunity to the biological system, digital vaccines immunize files and boot sectors against malicious code. They run in the background, monitor system behavior, and block unauthorized writing or modifications to the disk, thereby safeguarding the storage medium from potential infection before a virus can take hold.

Explanation

MIPS, which stands for Million Instructions Per Second, is a standard unit of measurement used to quantify the performance and processing speed of a central processing unit. It represents the number of machine-level instructions that a CPU can execute in one second, providing a direct assessment of the processor's capability to handle computational tasks.

Explanation

Caustic soda, chemically known as sodium hydroxide (NaOH), is a highly deliquescent substance. When solid pellets or flakes of caustic soda are exposed to the atmosphere, they rapidly absorb water vapor and moisture from the surrounding air. The amount of absorbed water is sufficient to completely dissolve the solid, forming a concentrated aqueous solution. This characteristic ability to absorb atmospheric moisture and dissolve in it is termed deliquescence.

Explanation

Graphite is widely used as a solid lubricant due to its unique crystalline structure. It consists of flat, parallel layers of carbon atoms arranged in hexagonal rings. Within each layer, the carbon atoms are strongly bound by covalent bonds. However, the forces holding the individual layers together are weak van der Waals forces. This allows the layers to easily slide over one another, making graphite slippery to the touch and highly effective as a lubricant, especially under high-temperature and high-pressure conditions.

Explanation

Zinc carbonate is a white solid that undergoes thermal decomposition upon heating to produce zinc oxide and carbon dioxide gas:

ZnCO₃ → ZnO + CO₂

The liberated carbon dioxide gas turns lime water milky due to the formation of insoluble calcium carbonate. The residue left behind is zinc oxide, which has a characteristic property of appearing yellow when hot and turning white upon cooling. This color change is due to the reversible loss of oxygen at high temperatures, creating crystal defects that absorb light in the visible spectrum.

Explanation

Suspended colloidal particles in water carry similar electrical charges, usually negative, which cause them to repel one another and remain stable in suspension, preventing them from settling under gravity. The process of coagulation involves adding chemical agents, known as coagulants like alum or iron salts, to the water. These coagulants neutralize the electrical charges on the colloidal particles. Once these repulsive forces are neutralized, the colloidal particles collide and aggregate to form larger, heavier clumps called flocs, which can then easily settle down and be removed from the water.

Explanation

Acid rain contains sulphuric acid, which is formed when sulphur dioxide emissions react with water, oxygen, and other chemicals in the atmosphere. When acid rain falls on forests and vegetation, the sulphuric acid strips essential nutrients like calcium and magnesium from the soil. It also dissolves and releases toxic aluminium into the soil, which hinders water absorption by plant roots. Additionally, the acidic deposition directly damages the protective waxy coating of leaves, making plants highly vulnerable to diseases, extreme temperatures, and pest attacks.

Explanation

Aeration is highly effective in removing dissolved iron and manganese from groundwater. In natural groundwater, iron and manganese typically exist in their soluble, reduced divalent forms (Fe²⁺ and Mn²⁺).

When water undergoes aeration, it is brought into close contact with air to increase the concentration of dissolved oxygen. The oxygen acts as an oxidizing agent, chemically converting the soluble Fe²⁺ and Mn²⁺ ions into insoluble oxidized states: insoluble ferric hydroxide (Fe(OH)₃) and manganese dioxide (MnO₂).

The chemical oxidation of iron by dissolved oxygen during aeration is represented as:

4Fe²⁺ + O₂ + 8HCO₃⁻ + 2H₂O → 4Fe(OH)₃ + 8CO₂

Once precipitated into these solid insoluble particles, the iron and manganese can easily be removed by subsequent physical sedimentation and filtration.

Explanation

According to the Hardy-Schulze rule, the coagulating or flocculating power of an ion is directly proportional to the valency or charge of the active ion. For the coagulation of negatively charged colloidal particles, cations are the active coagulating agents. The coagulating power increases significantly with an increase in the positive charge of the cation. Aluminium chloride dissociates in water to yield trivalent aluminium ions (Al³⁺). Since Al³⁺ carries a high positive charge of +3, which is greater than the +2 charge of the divalent cations in the other compounds, it has the highest capacity to neutralize the negative charges on colloidal particles, causing them to aggregate and precipitate rapidly. This makes aluminium chloride the most effective and strongest coagulant.

Explanation

Activated sludge process is a biological wastewater treatment method because it relies on a diverse community of microorganisms, primarily aerobic bacteria, to decompose and metabolize biodegradable organic matter present in sewage. During this process, wastewater is thoroughly mixed with a concentrated suspension of active microorganisms in an aeration tank. The continuous supply of oxygen in the tank promotes the rapid growth of these aerobic organisms, which consume organic pollutants and convert them into carbon dioxide, water, and new biomass. The resulting biological solids, known as activated sludge, are subsequently separated from the treated effluent in a sedimentation tank, making it a fundamental secondary biological treatment technology.

Explanation

Roger Federer won his sixth Wimbledon men's singles title in 2009. In the final on July 5, 2009, he defeated Andy Roddick in an epic five-set match, winning the final set 16-14. This victory allowed him to reclaim the Wimbledon crown and secure his 15th Grand Slam singles title overall. His previous five Wimbledon titles were achieved in consecutive years from 2003 to 2007.

Explanation

World Series Hockey (WSH) was launched in late 2010 and early 2011 as a joint initiative of the Indian Hockey Federation and Nimbus Sport. Formatted on the lines of the Indian Premier League (IPL), this franchise-based league was introduced to promote, popularise, and revitalize field hockey in India by providing players with financial incentives and increased visibility.

Explanation

At the time of the exam in April 2012, there were three former cricketers who had represented India in Test matches serving as members of the 15th Lok Sabha. These three individuals are Navjot Singh Sidhu, Mohammad Azharuddin, and Kirti Azad.

Navjot Singh Sidhu played 51 Test matches for India and was elected to the Lok Sabha from the Amritsar constituency in Punjab. Mohammad Azharuddin, who captained the national side and played 99 Test matches, was a member representing the Moradabad constituency in Uttar Pradesh. Kirti Azad, a member of the 1983 World Cup-winning squad who played 7 Test matches, represented the Darbhanga constituency in Bihar. All three were active members of the lower house of India's Parliament during this period.

Explanation

South Africa is not a member of the Organization of the Petroleum Exporting Countries (OPEC). It is a net importer of crude oil and its economy is dominated by sectors like mining, manufacturing, and services rather than oil exports, making it ineligible for OPEC membership.

Explanation

Rajaji National Park is situated in the state of Uttarakhand. It spans across three districts of the state, namely Haridwar, Dehradun, and Pauri Garhwal, along the foothills of the Shivalik range of the Himalayas. Named after the prominent freedom fighter and independent India's first Governor-General, C. Rajagopalachari (Rajaji), the park was established in 1983 by amalgamating three existing wildlife sanctuaries: Rajaji, Motichur, and Chilla.

Explanation

The International Day of Non-Violence is observed on 2nd October, which marks the birth anniversary of Mahatma Gandhi, the leader of the Indian independence movement and a global pioneer of the philosophy and strategy of non-violence. On 15 June 2007, the United Nations General Assembly voted to establish this day to disseminate the message of non-violence, including through education and public awareness, securing a global desire for peace, tolerance, and understanding.

Explanation

Sri Lanka was designated as the host country for the 22nd Commonwealth Heads of Government Meeting (CHOGM) held in November 2013. The decision to hold the meeting in Colombo was formally agreed upon and confirmed by the Commonwealth heads of government during their previous summits in Port of Spain in 2009 and Perth in 2011. This event marked the first time Sri Lanka hosted this biennial summit of the leaders of the Commonwealth of Nations.

Explanation

The Lakshmibai National Institute of Physical Education (LNIPE) is located in Gwalior, Madhya Pradesh. Established in August 1957 by the Ministry of Education, Government of India, the institute was originally named the Lakshmibai College of Physical Education to commemorate the legendary warrior queen of Jhansi, Maharani Lakshmibai, who died fighting near Gwalior in 1858. The institute was later upgraded to a Deemed to be University in 1995 and functions as a premier center for physical education, research, and sports training.

Explanation

M. K. Narayanan, a retired Indian Police Service officer and former National Security Adviser of India, served as the 19th Governor of West Bengal from 24 January 2010 to 3 July 2014. Since his tenure spanned from 2010 to 2014, he was holding the gubernatorial office of West Bengal in April 2012.

Explanation

The concept of carbon credit originated from the Kyoto Protocol, which was adopted in 1997 and came into force in 2005. The protocol introduced market-based mechanisms designed to reduce greenhouse gas emissions. These mechanisms, including the Clean Development Mechanism (CDM), Joint Implementation, and International Emissions Trading, allowed countries or industries to earn, buy, and sell emission allowances. This effectively monetized carbon reduction efforts, establishing the international market for carbon credits to help nations meet their binding emission reduction targets.

Explanation

In economic theory, the short-run is a production period in which at least one input or factor of production is fixed. Technology upgradation requires substantial structural adjustments, long-term capital investments, and research and development, which cannot be implemented overnight. Therefore, technology is considered a fixed factor of production that can only be altered or upgraded in the long-run.