Search Previous Year Questions

The correct answer is Mawlid al-Nabi.

Key Points

• Mawlid al-Nabi, also referred to as Eid-e-Milad, is the festival dedicated to commemorating the birth anniversary of Prophet Muhammad, who was born in Mecca in approximately 570 CE.
• The celebration occurs during Rabi-ul-Awwal, which is the third month of the Islamic lunar calendar.
• The specific day of celebration varies by denomination: Sunni Muslims observe it on the 12^th of Rabi-ul-Awwal, while Shia Muslims generally observe it on the 17^th of Rabi-ul-Awwal.
• The term Mawlid is derived from the Arabic language and literally translates to birth or place of birth.
• The day is marked by processions, the recitation of Naats (poetry in praise of the Prophet), and Sira (biographical accounts of his life and teachings).
• It is observed as a public holiday in many Muslim-majority nations, where mosques and streets are often illuminated with colorful lights.

 Additional Information

• Eid-ul-Fitr:
• This is the Festival of Breaking the Fast, celebrated at the end of the holy month of Ramadan.
• It occurs on the first day of the month of Shawwal and involves Salat al-Eid (special prayers) and the mandatory act of Zakat al-Fitr (charity).
• Eid-ul-Adha:
• Known as the Festival of Sacrifice, it commemorates Prophet Ibrahim’s (Abraham) willingness to sacrifice his son as an act of obedience to Allah.
• It falls on the 10^th day of Dhu al-Hijjah and marks the culmination of the Hajj pilgrimage in Mecca.
• Shab-e-Barat:
• Referred to as the Night of Forgiveness or Night of Fortune, it is observed on the 15^th night of the month of Sha-ban.
• Devotees spend the night in vigil and prayer, asking for divine mercy and the writing of their destiny for the upcoming year.

The correct answer is This is an early Buddhist temple built entirely of bricks.

Key Points

• The Mahabodhi Temple, located in Bodh Gaya, Bihar, is one of the most significant sites in Buddhism as it marks the location where Siddhartha Gautama attained enlightenment.
• The structure is celebrated as one of the oldest and most imposing brick temples in India, representing a transition from wooden architecture to more permanent masonry.
• While Emperor Ashoka established the first temple at the site in the 3^rd century BCE, the current pyramid-shaped structure dates primarily to the late Gupta period (around the 5^th or 6^th century CE).
• The central shikhara (tower) rises approximately 55 meters (180 feet) and is constructed of bricks finished with stucco, featuring intricate carvings of Buddha images in niches.
• The architectural style influenced the development of temple designs throughout Southeast Asia, serving as a prototype for many later Buddhist structures.

 Additional Information

• UNESCO World Heritage Site:
• The temple complex was inscribed as a UNESCO World Heritage Site in 2002 due to its immense cultural and historical value.
• The complex includes the Bodhi Tree, the Vajrasana (Diamond Throne), and various votive stupas.
• Incorrect Architectural Features:
• Golden Tiles: While the dome was gilded with over 280 kilograms of gold donated by the King of Thailand in recent years, the primary architectural structure is not made of golden tiles.
• Marble Pillars: The temple core is brick and mortar; while Asokan pillars were made of sandstone, marble was not the primary building material for the temple edifice.
• Wooden Beams: Although early Indian architecture was predominantly wood-based, the Mahabodhi Temple is a landmark transition into monumental brick construction.

The correct answer is germination.

Key Points

• Germination is the biological process by which a seed develops into a seedling after being exposed to favorable conditions such as moisture, oxygen, and the right temperature.
• The process begins with imbibition, where the dry seed absorbs water, causing the seed coat to swell and rupture, which activates metabolic enzymes.
• The white shoots that emerge from pulses like mung bean or chana are the first signs of growth; the radicle (embryonic root) typically appears first, followed by the plumule (embryonic shoot).
• During this stage, complex carbohydrates are broken down into simple sugars, and the concentration of vitamins (specifically Vitamin C, Vitamin B, and Vitamin K) increases significantly.
• Sprouting or germination also reduces anti-nutritional factors like phytic acid and tannins, making the nutrients more bioavailable for human consumption.

 Additional Information

• Fermentation
• It is an anaerobic metabolic process where microorganisms like yeast and bacteria convert sugars into acids, gases, or alcohol.
• Common examples include the preparation of curd, bread, and vinegar.
• Pasteurization
• Named after Louis Pasteur, this process involves heating liquids (primarily milk) to a specific temperature (approx 72°C for 15 seconds) to kill harmful pathogens.
• It extends shelf life without significantly altering the nutritional value or taste of the product.
• Roasting
• A dry heat cooking method that uses convection or thermal radiation to cook food evenly on all sides.
• It is used to enhance the aroma and texture of pulses and nuts through the Maillard reaction.

The correct answer is Bihar.

Key Points

• According to the Census 2011, Bihar is the most densely populated state in India, recording a density of 1,106 persons per square kilometer.
• The state witnessed a significant increase in density from the 2001 Census, where the figure stood at 881 persons per square kilometer.
• The high population density in Bihar is largely attributed to the fertile Indo-Gangetic plains, which historically support high population concentrations due to agriculture.
• In comparison, the national average population density of India as per the 2011 Census was 382 persons per square kilometer.
• Prior to 2011, West Bengal held the top rank; however, it transitioned to the second position in 2011 with a density of 1,028 persons per square kilometer.

 Additional Information

• Contextual Data for Other States:
• Uttarakhand: This northern Himalayan state has a population density of 189 persons per square kilometer, constrained by its mountainous topography.
• Himachal Pradesh: Located in the Western Himalayas, it recorded a density of 123 persons per square kilometer during the 2011 Census.
• Rajasthan: Although it is the largest state in India by area, its density is relatively low at 200 persons per square kilometer due to the presence of the Thar Desert.
• National Comparison and Extremes:
• Among all Union Territories, NCT of Delhi holds the highest density at 11,320 persons per square kilometer.
• Arunachal Pradesh remains the state with the lowest population density in India, with only 17 persons per square kilometer.
• The Census 2011 was the 15^th National Census of India since 1872 and the 7^th after independence.

The correct answer is Photosynthesis.

Key Points

• Photosynthesis is the essential biochemical process by which photoautotrophs, such as green plants, convert solar energy into chemical energy stored in the bonds of sugar molecules.
• The process primarily occurs within the chloroplasts of plant cells, which house the green pigment chlorophyll that is responsible for capturing light energy.
• Plants utilize carbon dioxide (CO₂) obtained from the atmosphere through stomata and water (H₂O) absorbed from the soil via the xylem.
• The balanced chemical equation for this reaction is: 6CO₂ + 6H₂O + light energy → C₆H₁₂O₆ + 6O₂, where glucose is produced as food and oxygen is released as a vital byproduct.
• This process is divided into light-dependent reactions, which generate energy carriers, and the Calvin Cycle, which fixes carbon into organic compounds.

 Additional Information

• Transpiration:
• Refers to the process of water movement through a plant and its evaporation from aerial parts, such as leaves and stems.
• It helps in the transportation of minerals and maintains the turgidity of plant cells.
• Respiration:
• A metabolic process in which living cells break down glucose in the presence of oxygen to release energy in the form of ATP.
• Unlike photosynthesis, which builds food, respiration consumes food and occurs in the mitochondria.
• Germination:
• The biological process by which a seed develops into a young plant or seedling.
• It is triggered by environmental triggers such as optimal temperature, oxygen, and water availability.

The correct answer is Sarnath.

Key Points

• After attaining enlightenment at Bodhgaya, Gautam Buddha traveled to Sarnath, located near Varanasi in Uttar Pradesh, to deliver his first sermon.
• This pivotal event is historically and religiously referred to as Dharmachakra Pravartan, which translates to 'Turning of the Wheel of Dharma'.
• The sermon was preached in the Deer Park (Isipatana) to his five former companions: Kaundinya, Assaji, Bhaddiya, Vappa, and Mahanama.
• The Dhamek Stupa is a massive, cylindrical structure built at Sarnath to mark the exact spot where the Buddha is believed to have delivered this first discourse.
• This event laid the foundation for the Buddhist Sangha (monastic order) and introduced the core tenets of Buddhism, including the Four Noble Truths and the Eightfold Path.

 Additional Information

• Bodhgaya:
• Located in Bihar, it is the site where Siddhartha Gautama attained Enlightenment (Nirvana) under the Bodhi Tree (a Pipal tree) on the banks of the Falgu River at the age of 35.
• Lumbini:
• Situated in present-day Nepal, this is the birthplace of Prince Siddhartha in 563 BCE. The site is authenticated by the Ashokan Pillar inscription.
• Kushinagar:
• Located in Uttar Pradesh, it is the sacred site where Gautam Buddha attained Mahaparinirvana (death) in 483 BCE at the age of 80.
• Sarnath Landmarks:
• Apart from the Dhamek Stupa, Sarnath is home to the Ashoka Pillar. Its Lion Capital was adopted as the National Emblem of India in 1950.

The correct answer is The supreme test of Prophet Ibrahim's faith (iman) involving his sons.

Key Points

• Eid al-Adha, also known as the Festival of Sacrifice, is celebrated on the 10^th day of Dhu al-Hijjah, the final month of the Islamic lunar calendar. It coincides with the completion of the Hajj pilgrimage, which is one of the Five Pillars of Islam and is performed in the holy city of Mecca.
• The festival commemorates the devotion and Iman (faith) of Prophet Ibrahim (Abraham). According to Islamic theology, Ibrahim was commanded by Allah in a vision to sacrifice his son, Ismail (Ishmael), as an ultimate act of submission.
• As Ibrahim prepared to fulfill the divine command at Mina, Allah intervened, acknowledging his total obedience, and provided a ram to be sacrificed in place of his son. This event highlights the importance of Tawhid (monotheism) and self-sacrifice for the sake of the Creator.
• The celebration begins with a special congregational prayer called Salat al-Eid. Following the prayer, Muslims who are financially able perform Udhiya (Qurbani), the ritual slaughter of an animal, symbolizing Ibrahim's sacrifice.
• The meat from the sacrifice is traditionally divided into three parts: one for the poor and needy, one for relatives and friends, and one for the immediate family, fostering a sense of community and social justice.

 Additional Information

• First Revelation (Wahi)
• Refers to the descent of the Quran upon Prophet Muhammad in 610 CE via the Angel Jibril (Gabriel) in the Cave of Hira.
• This event is specifically commemorated during the month of Ramadan, particularly on Laylat al-Qadr (The Night of Power).
• The Hijrah (Migration)
• Marks the journey of Prophet Muhammad and his followers from Mecca to Medina in 622 CE.
• It denotes the beginning of the Islamic Hijri Calendar and the establishment of the first sovereign Islamic community (Ummah).
• Treaty of Hudaybiya
• A landmark 10-year peace agreement signed in 628 CE (6 AH) between the Muslims of Medina and the Quraysh tribe of Mecca.
• It paved the way for the eventual peaceful Conquest of Mecca and the spread of Islam across the Arabian Peninsula.

The correct answer is Malabar Coast.

Key Points

• The Western Coastal Plain of India is a narrow strip of land situated between the Western Ghats and the Arabian Sea, spanning from the Gulf of Kachchh in the north to Kanyakumari in the south.
• Physiographically, this coastline is divided into three distinct sections: the Konkan (north), the Kannad Plain (central), and the Malabar Coast (south).
• The Malabar Coast constitutes the southernmost stretch of the western coast, primarily encompassing the state of Kerala and extending approximately 550 kilometers in length.
• It is characterized by unique geographical features known as Kayals (backwaters), which are shallow lagoons or inlets running parallel to the shore, such as the famous Vembanad Lake.
• This region serves as the primary entry point for the South-West Monsoon in India, receiving heavy rainfall exceeding 250 cm annually, supporting dense tropical evergreen forests and plantations of coconut and rubber.

 Additional Information

• Kannad Plain:
• Located between the Konkan and Malabar coasts, it covers the coastal area of Karnataka.
• It is characterized by the presence of numerous small rivers that originate in the Western Ghats and flow into the Arabian Sea.
• Coromandel Coast:
• This forms the southern part of the Eastern Coastal Plain, extending between the Krishna River delta and Kanyakumari in Tamil Nadu.
• Unlike the western coast, it receives significant rainfall from the North-East Monsoon (Retreating Monsoon) during the winter months.
• Northern Circars:
• It refers to the northern part of the Eastern Coastal Plain, situated between the Mahanadi and Krishna rivers.
• This stretch covers parts of Odisha and Andhra Pradesh and is wider than the western coastal plains due to large delta formations.

The correct answer is The trait appears only when both alleles are recessive.

Key Points

• A recessive trait is a genetic feature that is expressed in the phenotype of an organism only when two copies of the recessive allele are present in its genotype.
• In Mendelian genetics, alleles are different versions of a gene found at the same locus on homologous chromosomes. A dominant allele typically masks the expression of a recessive allele.
• For a recessive trait to be visible, an individual must be homozygous recessive (e.g., 'aa'). If an individual is heterozygous (e.g., 'Aa'), the dominant trait will be expressed, and the recessive trait will remain latent.
• The concept of dominance and recessiveness was first systematically described by Gregor Mendel through his experiments with Pisum sativum (pea plants), where he observed that certain traits skipped generations only to reappear later.
• In humans, many physical characteristics and genetic disorders follow this autosomal recessive inheritance pattern, requiring both parents to contribute a recessive allele for the trait to appear in the offspring.

 Additional Information

• Genotypic Variations:
• Homozygous Dominant: Possessing two dominant alleles (e.g., 'AA'). The dominant trait is expressed.
• Heterozygous: Possessing one dominant and one recessive allele (e.g., 'Aa'). These individuals are often called genetic carriers because they carry the recessive gene but do not show the trait.
• Homozygous Recessive: Possessing two recessive alleles (e.g., 'aa'). This is the only condition where the recessive phenotype is manifested.
• Examples of Human Recessive Traits:
• Cystic Fibrosis: A severe respiratory and digestive disorder caused by mutations in the CFTR gene.
• Sickle Cell Anemia: A blood disorder where hemoglobin molecules are malformed, requiring two copies of the mutated gene for the full disease to occur.
• Albinism: A condition characterized by the lack of melanin pigment in the skin, hair, and eyes.
• Phenylketonuria (PKU): An inborn error of metabolism involving the breakdown of the amino acid phenylalanine.
• Inheritance Probability:
• If two heterozygous parents (Aa) have children, there is a 25% probability (1 in 4) that a child will inherit two recessive alleles (aa) and express the trait, as shown by a Punnett Square.

The correct answer is Insoluble in water, soluble in organic solvents.

Key Points

• Lipids are a diverse group of organic compounds that include fats, oils, hormones, and certain membrane components. They are characterized by their non-polar nature and lack of affinity for water.
• Solubility is governed by the principle of 'like dissolves like'. Water is a polar solvent characterized by partial charges and the ability to form hydrogen bonds. Because lipids consist mainly of long hydrocarbon chains, they lack the polarity required to interact with water molecules, making them hydrophobic and insoluble in water.
• Lipids readily dissolve in non-polar organic solvents such as ether, chloroform, benzene, and acetone. These solvents can break the weak van der Waals forces holding lipid molecules together and form new interactions with them.
• The molecular structure of most lipids contains high proportions of carbon and hydrogen with relatively little oxygen, resulting in a low dielectric constant and zero net charge for most fats.
• In biological systems, the insolubility of lipids in water allows them to form discrete structures such as micelles or bilayers, which are essential for creating compartmentalization within cells.

 Additional Information

• Classification and Composition:
• Simple Lipids: These are esters of fatty acids with glycerol (triglycerides). They serve as the primary energy reserve in living organisms.
• Compound Lipids: These include phospholipids and glycolipids. Phospholipids are amphipathic, meaning they possess both a hydrophilic head (polar) and a hydrophobic tail (non-polar).
• Steroids: Unlike other lipids, steroids have a four-ringed carbon structure. Examples include cholesterol and testosterone.
• Biological Functions:
• Energy Efficiency: Lipids provide approximately 9 kcal/g of energy, significantly higher than the 4 kcal/g provided by carbohydrates or proteins.
• Insulation: Subcutaneous adipose tissue acts as a thermal insulator, helping to maintain body temperature in mammals.
• Vitamin Transport: Lipids are necessary for the absorption of fat-soluble vitamins (A, D, E, and K) in the digestive tract.