Microscope, Telescope, and Periscope are all optical instruments that utilize lenses, mirrors, and light to magnify, view, or reflect distant and minute objects. In contrast, a Stethoscope is an acoustic medical diagnostic instrument used to auscultate internal bodily sounds (such as heartbeats and breathing). Therefore, Stethoscope is the odd one out.

Pattern analysis: S(+2)=U, P(-2)=N, R(+3)=U, I(-3)=F, N(+4)=R, G(-4)=C. Applying the alternating +/- 2, 3, 4 shifts to MOBILE: M(+2)=O, O(-2)=M, B(+3)=E, I(-3)=F, L(+4)=P, E(-4)=A -> OMEFPA.

Mukesh's son's wife's daughter is Mukesh's granddaughter. The mother of this granddaughter is Mukesh's son's wife (daughter-in-law). Thus, Rita is Mukesh's daughter-in-law, making Mukesh Rita's father-in-law.

Tracing Ram's path: Ram starts facing North; turning 90° right puts him facing East; turning 90° right again puts him facing South; finally, turning 90° left puts him facing East. Therefore, Ram is now facing East.

Alphabetical order of the names: 1. Mahendra, 2. Mahinder, 3. Mohender, 4. Mohinder. Therefore, 'Mohinder' appears last.

Joginder's rank from the end = 17th. Nitin is 7 ranks ahead (closer to rank 1), so Nitin's rank from the end = 17 + 7 = 24th from the bottom. In a class of 39, Nitin's rank from the start = (Total - Rank from end + 1) = 39 - 24 + 1 = 16th.

Substituting the operator meanings: 175 ÷ 25 + 5 x 20 - 3 x 10. Following BODMAS rules: Division: 175 ÷ 25 = 7; Multiplication: 5 x 20 = 100 and 3 x 10 = 30. Expression becomes: 7 + 100 - 30 = 107 - 30 = 77.

In 4 years Rahul will be 31, so Rahul's present age = 31 - 4 = 27 years. Rahul is 3 times as old as Seema, so Seema's age = 27 / 3 = 9 years. Four years ago, Rahul was 27 - 4 = 23. Laxmi was twice as old as Rahul 4 years ago = 23 x 2 = 46. Laxmi's present age = 46 + 4 = 50 years. Therefore, Seema is 9 and Laxmi is 50.

Row-wise mathematical relationship: In Row 1, (28 / 7) x 5 = 4 x 5 = 20. In Row 3, (45 / 9) x 5 = 5 x 5 = 25. Applying the identical pattern to Row 2: (84 / 12) x 5 = 7 x 5 = 35. Therefore, Option B (35) is the correct answer.

From the given codes: RAIN = 8%6 (R = 8, A =, I = %, N = 6) and MORE = 7#8@ (M = 7, O = #, R = 8, E = @). Matching each letter for REMAIN: R -> 8, E -> @, M -> 7, A -> , I -> %, N -> 6. Combining these gives 8@7%6.

At the 38th National Junior Athletics Championships held in Coimbatore, athletes representing Bihar secured 5 bronze medals across sprint, hurdles, and field events (including Under-14 and Under-16 track and field events), reflecting commendable grassroots athletic development.

The Kosi-Mechi River Interlinking Project is designed to divert surplus water from the Kosi basin to the Mahananda basin via Mechi river, benefiting the Seemanchal districts of Araria, Purnea, Kishanganj, and Katihar with irrigation for over 2.14 lakh hectares.

Telugu was granted Classical Language status in 2008. On 3 October 2024, the Union Cabinet chaired by PM Narendra Modi approved conferring Classical Language status to five more languages: Marathi, Bengali, Pali, Prakrit, and Assamese. Since Telugu, Marathi, and Bengali all hold this official status, Option (D) 'All of the above' is correct.

BirdLife International, a global conservation partnership, designates Important Bird and Biodiversity Areas (IBAs). Both Nagi and Nakti sanctuaries in Jamui district, Bihar, were recognized as IBAs by BirdLife International and subsequently declared Ramsar Sites in 2024.

The national-level celebration of National Panchayati Raj Day 2025 was organized in Madhubani district of Bihar, highlighting rural local governance initiatives and women empowerment in Panchayats.

NASA's Lunar Trailblazer is a small satellite mission designed specifically to detect, map, and understand the form, abundance, and distribution of water (H2O and OH) on the Moon's surface.

Afrikaners are a South African ethnic group descended predominantly from Dutch settlers who first arrived at the Cape of Good Hope in the 17th and 18th centuries, speaking Afrikaans.

Rajon ki Baoli, a stepwell in Mehrauli Archaeological Park, New Delhi built during the Lodi era (1506 AD) by Daulat Khan, was conserved and desilted under a joint initiative by ASI and World Monuments Fund India.

Eric Adams, Mayor of New York City, officially issued a proclamation declaring April 14 as Dr. B. R. Ambedkar Day in New York City to honor Ambedkar's legacy as an alumnus of Columbia University and champion of civil rights.

In November 2023, the European Broadcasting Union (EBU) announced that 'United By Music' (originally introduced for the 2023 Liverpool contest) was adopted as the permanent official slogan for all future editions of the Eurovision Song Contest to ensure global brand consistency.

GSLV-F14 launched the INSAT-3DS meteorological satellite on 17 February 2024. Analyzing the options: (A) is incorrect as NVS-02 was launched by GSLV-F12; (B) and (C) are incorrect because GSLV-F14 was the 16th flight of GSLV and the 92nd overall orbital launch from Sriharikota (not the 100th or 101st). Since none of the statements A, B, or C is true, Option (D) 'None of the above' is the correct answer.

Statements A, B, and C are all factually correct: The 19th G20 summit was held in Rio de Janeiro, Brazil under the theme 'Building a Just World and a Sustainable Planet', and consensus was reached on taxation of ultra-high-net-worth individuals. Therefore, 'None of the above' is false regarding individual truth, making the question a multi-statement verification.

At COP29 in Baku, Azerbaijan, the New Collective Quantified Goal (NCQG) on climate finance was adopted, setting a target of at least $300 billion per year by 2035 from developed countries to developing nations.

The 2024 Nobel Prize in Physics was awarded to John J. Hopfield and Geoffrey E. Hinton 'for foundational discoveries and inventions that enable machine learning with artificial neural networks'.

The 2024 Nobel Peace Prize was awarded to the Japanese organization Nihon Hidankyo (grassroots movement of atomic bomb survivors from Hiroshima and Nagasaki) 'for its efforts to achieve a world free of nuclear weapons'.

In the UNDP Human Development Report 2023-24 ('Breaking the Gridlock'), India's HDI score improved to 0.644, placing India at 134th position out of 193 countries.

The global AI Action Summit was hosted in Paris, France on 10-11 February 2025, bringing together world leaders, AI innovators, and researchers to foster ethical and sovereign AI governance.

At the 96th Academy Awards in March 2024, Emma Stone won the Best Actress Oscar for her performance as Bella Baxter in the film 'Poor Things' directed by Yorgos Lanthimos.

The Malayalam suspense drama film 'Aattam' (The Play), directed by Anand Ekarshi, won the prestigious Best Feature Film award at the 70th National Film Awards.

In the National Institutional Ranking Framework (NIRF) 2024 released by the Ministry of Education, IIT Madras retained its 1st rank in the 'Overall' category for the sixth consecutive year.

Project Akashteer is an advanced automated air defence control and reporting system developed indigenously by Bharat Electronics Limited (BEL) for the Indian Army to integrate air defence radar sensors and weapon platforms.

Both Main Battle Tank (MBT) Arjun (developed by DRDO/CVRDE) and the Advanced Towed Artillery Gun System (ATAGS, developed by DRDO with Indian industry partners Bharat Forge and Tata) are premier indigenous defence platforms under 'Make in India'. The F-35 Lightning II is an American fifth-generation stealth aircraft manufactured by Lockheed Martin. Thus, Both (B) and (C) (Option D) is the correct answer.

January 27 is designated by the United Nations General Assembly as International Holocaust Remembrance Day, marking the anniversary of the liberation of the Auschwitz-Birkenau concentration camp in 1945.

Kannada writer Banu Mushtaq's celebrated short story collection 'Heart Lamp' (originally written in Kannada as 'Hasida Koodalu' and translated into English) gained global literary acclaim, featuring in international prize recognitions.

Under the Indus Waters Treaty signed in 1960 between India and Pakistan brokered by the World Bank, the three Eastern Rivers (Ravi, Beas, and Sutlej) were allocated exclusively to India, while the three Western Rivers (Indus, Jhelum, and Chenab) were allocated primarily to Pakistan.

All three statements are correct: The MPI is published annually by the Oxford Poverty and Human Development Initiative (OPHI) and UNDP, evaluating 3 dimensions (Health, Education, Standard of Living) encompassing 10 standardized indicators.

While GDP and Per Capita Income reflect quantitative economic growth, the Human Development Index (HDI) reflects qualitative development, factoring in life expectancy, schooling, and decent standard of living.

According to the India State of Forest Report, Madhya Pradesh continues to have the largest forest cover in the country in terms of total geographical area, followed by Arunachal Pradesh, Chhattisgarh, Odisha, and Maharashtra.

The European Free Trade Association (EFTA) comprises four non-EU nations: Switzerland, Norway, Iceland, and Liechtenstein. In March 2024, India signed the landmark Trade and Economic Partnership Agreement (TEPA) with EFTA. Since Switzerland, Norway, and Iceland are all members of EFTA, 'All of the above' (Option D) is the correct answer.

Correct Answer: Option (D) — All of the above

The National Urban Innovation Stack (NUIS) was jointly developed by the Ministry of Housing and Urban Affairs (MoHUA) and the National Institute of Urban Affairs (NIUA) to provide shared digital public goods for urban governance.

Under Phase-I of the Bharatmala Pariyojana, Rajasthan recorded the highest constructed highway and economic corridor road length due to major connectivity corridors like the Amritsar-Jamnagar and Delhi-Vadodara expressways traversing the state.

The Kisan Credit Card (KCC) scheme was introduced in 1998 by NABARD to provide timely credit for crop cultivation expenses. In 2018-19, its scope was formally extended to farmers engaged in animal husbandry, dairy, and fisheries.

In late September 2024, the Reserve Bank of India reported that India's foreign exchange reserves crossed the historic milestone of USD 700 billion for the first time, making India the fourth largest forex holder globally.

According to National Family Health Survey-5 (NFHS-5) data, Kerala (99.8%), Tamil Nadu (99.9%), and Goa (99.9%) all recorded near 100% institutional deliveries in India. Since all three states achieved top-tier universal institutional delivery coverage, 'All of the above' (Option D) is the correct answer.

PM Ujjwala Yojana: LPG connections to women from BPL families (2). PM Awas Yojana: Pucca houses with basic amenities (3). Jal Jeevan Mission: Functional Household Tap Connection (FHTC) to rural homes (1). PM Jan Arogya Yojana (Ayushman Bharat): Rs 5 lakh secondary and tertiary hospitalisation cover (4). Code: a-2, b-3, c-1, d-4.

According to the Periodic Labour Force Survey (PLFS) Annual Report (July 2023 – June 2024) released by MoSPI, the unemployment rate in usual status (ps+ss) for persons aged 15 years and above remained at 3.2%.

In the Union Budget 2024-25 presented in July 2024, Finance Minister Nirmala Sitharaman revised the fiscal deficit target downward to 4.9% of GDP, continuing on the fiscal consolidation path to reach below 4.5% by 2025-26.

According to official data from the Ministry of MSME and the Directorate General of Commercial Intelligence and Statistics (DGCIS), the MSME sector accounts for approximately 45% of India's overall exports and about 30% of national GDP.

Centrally Sponsored Schemes (CSS) are funded jointly by the Central government and State governments (e.g. 60:40 or 90:10 for NE/Himalayan states) and are executed by State government machinery, unlike Central Sector Schemes which are 100% funded and executed by the Union Government.

Atal Pension Yojana (APY) was launched in May 2015 to create a universal social security system for all Indians, especially the poor, underprivileged, and unorganised sector workers, guaranteeing a monthly pension between Rs 1,000 and Rs 5,000 after age 60.

Pradhan Mantri Kisan Samman Nidhi (PM-KISAN) is a Central Sector Scheme providing income support of Rs 6,000 per year in three equal installments of Rs 2,000 each transferred directly into the bank accounts of landholding farmers.

Correct Answer: Option (D) — All of the above

The Second Five Year Plan was based on the Feldman-Mahalanobis model, which prioritized building domestic capacity in heavy capital goods (steel, machinery, power) rather than light consumer goods industries.

The Periodic Labour Force Survey (PLFS) shows that the Female Labour Force Participation Rate (FLFPR) in India in usual status has risen significantly from 23.3% in 2017-18 to 41.7% in 2023-24, driven particularly by rural women's employment.

Article 309 provides that Acts of the appropriate Legislature (Parliament for the Union, State Legislatures for the States) may regulate the recruitment and conditions of service of persons appointed to public services.

Article 76 governs the Attorney General for India, the highest law officer. The AG is appointed by the President, must be qualified to be a Supreme Court Judge, has the right of audience in all Indian courts, and under Article 88 can speak and take part in parliamentary proceedings without the right to vote. All options are correct.

Correct Answer: Option (D) — All of the above

Articles 40, 43, 46, 47, and 48 embody Gandhian principles. Article 44 (Uniform Civil Code) belongs to the Liberal-Intellectual category, not Gandhian principles.

Administration and control of Scheduled Areas and STs is dealt with in the Fifth Schedule. The Sixth Schedule deals specifically with the administration of tribal areas in the four northeastern states of Assam, Meghalaya, Tripura, and Mizoram (AMTM).

Under Article 77(3) of the Constitution, the President makes rules for the more convenient transaction of the business of the Government of India. Ministries/departments are established and business is allocated to ministers by the President on the binding advice of the Prime Minister.

Article 212 explicitly provides that the validity of any proceedings in the Legislature of a State shall not be called in question on the ground of any alleged irregularity of procedure. Article 211 prohibits discussion on the conduct of SC/HC judges, and Article 177 denies voting rights to the Advocate General.

Article 19(2) of the Indian Constitution permits reasonable restrictions on the Freedom of Speech and Expression on eight grounds: sovereignty and integrity of India, security of the State, friendly relations with foreign States, public order, decency or morality, contempt of court, defamation, and incitement to an offence. Since (A), (B), and (C) are all valid constitutional grounds, 'More than one of the above' (Option D) is the correct answer.

Article 123 empowers the President of India to promulgate ordinances during the recess of Parliament if satisfied that circumstances exist which render it necessary for him to take immediate action.

Both statements are direct constitutional mandates of Article 85(1): The President shall summon each House at such time and place as he thinks fit, but six months shall not intervene between two sessions.

In India, Judicial Review is exercised by both the Supreme Court (under Articles 32 and 136) and the High Courts (under Articles 226 and 227) to examine the constitutional validity of legislative acts and executive orders.

The Five Pillars of Atmanirbhar Bharat are: 1. Economy (quantum jumps), 2. Infrastructure, 3. System (tech-driven 21st century), 4. Vibrant Demography, and 5. Demand. It advocates self-reliance and global integration, never isolationism.

The Census of India is conducted by the Office of the Registrar General and Census Commissioner of India, which operates directly under the Ministry of Home Affairs, Government of India.

A Censure Motion in the Lok Sabha can be moved against an individual minister, a group of ministers, or the entire Council of Ministers; it must state the specific reasons and policies being censured; and if passed, the Council of Ministers is not bound to resign immediately (unlike a No-Confidence Motion, which requires immediate resignation). Therefore, all statements are true, making 'All of the above' (Option D) the correct answer.

Enforcement of Fundamental Rights is under the concurrent jurisdiction of both the Supreme Court (Article 32) and High Courts (Article 226). In contrast, Centre-State and Inter-State disputes fall under the Exclusive Original Jurisdiction of the Supreme Court alone (Article 131).

Dadabhai Naoroji first propounded the Drain of Wealth theory in his paper 'England's Debt to India' (1867) and later in his classic book 'Poverty and Un-British Rule in India' (1901), demonstrating how Indian surplus capital was drained to Britain without economic return.

On 23 December 1912, during the ceremonial procession shifting the imperial capital to Delhi, a bomb was hurled at Viceroy Lord Hardinge II at Chandni Chowk in a revolutionary plot masterminded by Rash Behari Bose and Sachindra Nath Sanyal (Delhi Conspiracy Case).

The 1907 Surat Session of the Indian National Congress on the banks of the Tapti river was presided over by Dr. Rash Behari Ghosh, during which intense friction between Moderates and Extremists led to the split.

Theodore Beck served as the influential early English Principal of MAO College Aligarh (1883-1899), playing a key role in Sir Syed Ahmad Khan's educational and political activities.

'Young India' was an English weekly journal published by Mahatma Gandhi from 1919 to 1931, where he propagated his philosophy of non-violence, satyagraha, and constructive programs.

The Sadler Commission (appointed under Sir Michael Sadler in 1917 to inquire into Calcutta University) recommended separating intermediate education from universities and establishing Boards of Secondary and Intermediate Education.

Netaji Subhas Chandra Bose arrived in Singapore in July 1943, took over leadership of the Indian Independence League and INA from Rash Behari Bose, reorganized the Azad Hind Fauj, and gave the battle cries 'Delhi Chalo' and 'Give me blood and I will give you freedom'.

Mahatma Gandhi made this famous pledge during his 'Do or Die' address at the Gowalia Tank Maidan in Bombay on 8 August 1942 while launching the Quit India Movement.

At the Karachi Session of the All India Muslim League held in December 1943 under the leadership of Muhammad Ali Jinnah, the League adopted the slogan 'Divide and Quit' as a counter to the Congress slogan 'Quit India'.

The Indian Independence Act 1947 was passed by the British Parliament on 18 July 1947 based on the Mountbatten Plan, establishing two independent dominions of India and Pakistan effective from 15 August 1947.

The Battle of Buxar was fought on 22-23 October 1764 between the forces of the British East India Company led by Major Hector Munro and the combined allied army of Mir Qasim (Nawab of Bengal), Shuja-ud-Daula (Nawab of Awadh), and Mughal Emperor Shah Alam II.

Babu Veer Kunwar Singh (1777–1858) belonged to the Ujjainiya clan of Rajputs and was the Zamindar of Jagdishpur in Shahabad (present-day Bhojpur district) of Bihar. At the age of nearly 80, he led a formidable guerrilla struggle against British forces.

Under the Tinkathia system enforced by European indigo planters in Champaran, ryots were legally obliged to cultivate indigo on 3 kathas out of every 20 kathas (1 Bigha = 20 Kathas), i.e., 3/20th of their best agricultural holding.

During the Quit India uprising across Patna rural and Shahabad districts, patriotic volunteers stormed police stations to hoist the national flag; Ramgovind Singh was among the martyrs who laid down their lives during police firing at Bikram.

Following the 1937 provincial elections, the first Congress Ministry in Bihar was formed in July 1937 headed by Dr. Sri Krishna Sinha (known as 'Bihar Kesari') as Premier, with Anugrah Narayan Sinha as Finance Minister.

Ancient ports and their modern states: (a) Sopara (ancient Surparaka) was an eminent Arabian Sea trade port in Maharashtra; (b) Tamralipti was the primary eastern port on the Bay of Bengal in West Bengal; (c) Lothal was the premier Harappan dockyard port in Gujarat; (d) Arikamedu was an Indo-Roman coastal trading emporium near Puducherry. Hence, the correct code is a-2, b-3, c-1, d-4.

The Sasaram Minor Rock Edict is inscribed in an artificial cave on Chandan Shahid hill near Sasaram in Rohtas district, Bihar. Lauriya Nandangarh and Rampurva are sites of Ashoka's Major Pillar Edicts.

Mudrarakshasa was written by Vishakhadatta (2). Mrichchhakatika was composed by Shudraka (3). Arthashastra is by Kautilya (1). Harshacharita was authored by Banabhatta (4). Code: a-2, b-3, c-1, d-4.

Vikramashila University was established in the late 8th or early 9th century CE by Pala King Dharampala at Antichak (Bhagalpur district, Bihar) as a major centre for Buddhist Tantric learning, alongside Nalanda.

Chronological order of Magadha dynasties: 1. Haryanka dynasty (c. 544 BCE - Bimbisara/Ajatashatru), 2. Maurya dynasty (c. 322 BCE - Chandragupta Maurya), 3. Shunga dynasty (c. 185 BCE - Pushyamitra Shunga), 4. Kanva dynasty (c. 73 BCE - Vasudeva Kanva). Correct sequence: 3, 2, 1, 4.

'Sahitya Lahari' was written by Surdas, not Goswami Tulsidas. Tulsidas authored Ramcharitmanas, Geetavali, Kavitavali, Vinay Patrika, Dohavali, and Janaki Mangal.

Correct match: Kabuli Bagh Mosque (Panipat) was built by Babur (4); Adhai Din Ka Jhopra (Ajmer) by Qutb-ud-Din Aibak (1); Allahabad Fort by Akbar (3); and Itmad-ud-Daulah's Tomb (Agra) by Nur Jahan (2). Hence, code is 4, 1, 3, 2.

James Augustus Hicky is associated with India's first newspaper 'Bengal Gazette' (The Calcutta General Advertiser), founded in 1780. The 'Calcutta Chronicle' was started later in 1786 by Daniel Stuart and Joseph Cooper.

Correct match: Babur's son was Kamran (3); Akbar's son was Salim/Jahangir (1); Shah Jahan's son was Murad Bakhsh (4); Jahangir's eldest son was Khusrau Mirza (2). Thus, the correct code is 3, 1, 4, 2.

The Fourth Buddhist Council was held at Kundalvana in Kashmir during the reign of Kanishka (presided over by Vasumitra). The first three were all held in Bihar: 1st at Rajgriha (Ajatashatru), 2nd at Vaishali (Kalasoka), and 3rd at Pataliputra (Ashoka).

Statement 1 is incorrect because Bose was elected president at Haripura in 1938 and Tripuri in 1939. Statements 2 and 3 are correct: his famous 'Great Escape' took place in January 1941, and he established the Provisional Government of Free India (Azad Hind) on 21 October 1943 in Singapore.

Kautilya (Chanakya) was a teacher/acharya at the ancient University of Taxila (Takshashila) in the 4th century BCE. Nalanda University was founded much later in the 5th century CE by Kumaragupta I. Nagarjuna, Silabhadra, and Santarakshita were all renowned acharyas of Nalanda.

Chronological order of historic events: (3) Battle of Wandiwash occurred in January 1760; (1) Judicial execution/death sentence of Raja Nand Kumar took place in August 1775 under Warren Hastings and Elijah Impey; (2) Treaty of Salbai concluding the First Anglo-Maratha War was signed in May 1782; (4) Death of Tipu Sultan at Srirangapatna occurred on 4 May 1799. Hence, code 3-1-2-4.

'Patna Harkara' was published in 1855, making it the earliest among the given newspapers published from Bihar. 'Bihar Bandhu' (first Hindi weekly) began in 1872, and 'Bihar Herald' (first English newspaper of Bihar) was started in 1875 by Guru Prasad Sen.

Correct match: Champaran Satyagraha - Dr. Rajendra Prasad (4); Azad Dasta - Jayaprakash Narayan (1); Individual Satyagraha in Bihar (1940) - Shyam Narayan Singh was among the active satyagrahis following Sri Krishna Sinha and Anugrah Narayan Sinha (2); Bihar Provincial Kisan Sabha - Swami Sahajanand Saraswati (3). Correct code: 4, 1, 2, 3.

The Maginot Line was an impenetrable defensive barrier of concrete fortifications, tank obstacles, and artillery casemates constructed by France in the 1930s along its eastern border with Germany.

The Strait of Hormuz connects the Persian Gulf with the Gulf of Oman and the Arabian Sea. The Bab-el-Mandeb connects the Red Sea to the Gulf of Aden.

'Ground Zero' commonly refers to the site of the World Trade Center in New York City, which was destroyed during the September 11, 2001 terrorist attacks.

The Isthmus of Kra (connecting the Malay Peninsula with the mainland of Southeast Asia in Thailand) was historically known in maritime folklore as the 'Devil's Neck' due to treacherous weather and difficult overland portage.

Ladang is the local term for shifting cultivation (slash-and-burn agriculture) practiced in Indonesia and Malaysia (similar to Jhum in Northeast India, Milpa in Central America, and Roca in Brazil).

Correct Answer: Option (B) — Majuli Island

Correct Answer: Option (C) — Godavari river basin

At Devprayag, the rivers Alaknanda and Bhagirathi meet to form the holy river Ganga. (Vishnuprayag: Alaknanda + Dhauliganga; Karnaprayag: Alaknanda + Pindar; Rudraprayag: Alaknanda + Mandakini).

Barren Island (the only active volcano in South Asia) and Narcondam Island (a dormant volcanic island), both located in the Andaman Sea, are the two volcanic islands of India.

Meerut's historic hand-forged scissors industry, acclaimed for using recycled scrap metal and artisanal tempering techniques, was awarded a prestigious Geographical Indication (GI) tag.

The Himalayan Forest Research Institute (HFRI) / Temperate Forest Research Centre is located in Shimla, Himachal Pradesh, functioning under the Indian Council of Forestry Research and Education (ICFRE).

Kanha National Park (and Tiger Reserve) is situated in the Mandla and Balaghat districts of Madhya Pradesh. It is renowned globally for successfully saving the endangered hard-ground barasingha (swamp deer, Rucervus duvaucelii branderi) from total extinction.

Loktak Lake is the largest freshwater lake in Northeast India, located in Manipur. It is globally famous for its phumdis (floating organic masses) and the Keibul Lamjao National Park (the world's only floating national park).

Valmiki National Park and Tiger Reserve, located in West Champaran district of Bihar, is the sole operational tiger reserve under Project Tiger in Bihar.

The state animal of Bihar is the Gaur (Indian Bison, Bos gaurus), colloquially referred to as Bull/बैल in Bihar government official notifications (adopted in 2013, replacing the wild bear). The state bird is the House Sparrow (घरेलू गौरैया), the state flower is Marigold (गेंदा), and the state tree is the Peepal (पीपल).

Nalanda University commenced its first academic session and was officially revived/re-established for functioning on 1 September 2014 in Rajgir, Bihar, following the Nalanda University Act of 2010.

The Karmanasa River originates from the Kaimur Range near Sarodag in Kaimur district of Bihar. It flows through Uttar Pradesh and Bihar, joining the Ganga near Chausa.

Bihar possesses about 95% of India's total pyrite resources/reserves, centered around Amjhore in the Rohtas district.

According to the Geological Survey of India (GSI), Jamui district (specifically Sono area) holds massive gold reserves, estimated at roughly 44% of the country's total gold reserves.

Under Vladimir Köppen's climatic classification of India, the vast Gangetic plains of Bihar fall under the 'Cwg' climate type (Subtropical Monsoon with dry winters and hot summers).

Since the box moves at a constant velocity, its acceleration is zero, meaning net force is zero. Therefore, the opposing friction force exactly balances the applied force of 200 N.

Initial velocity u = 0, distance s = 400 m, time t = 20 s. Using s = ut + 0.5at^2: 400 = 0.5 a (20)^2 = 200a => a = 2 m/s^2. Mass m = 7 tons = 7000 kg. Force F = m a = 7000 * 2 = 14,000 N.

1 commercial unit of electricity = 1 kilowatt-hour (kWh) = 3.6 x 10^6 Joules. Therefore, 250 units = 250 x 3.6 x 10^6 J = 900 x 10^6 J = 9 x 10^8 Joules. Hence, Option C is the correct answer.

Sound waves travel fastest through solids due to their high elasticity and molecular density. In steel, sound travels at approx 5960 m/s, compared to 1480 m/s in water, 343 m/s in air, and 1284 m/s in hydrogen.

As the body falls, its potential energy (mgh) decreases while its kinetic energy (0.5mv^2) increases by the exact same amount, keeping total mechanical energy constant. Hence, the principle of conservation of energy is not violated.

Work done = Force Displacement = 140 N 15 m = 2100 Joules.

A plane mirror has a completely flat reflective surface, which corresponds to an imaginary sphere of infinite radius (R = \infty). Since focal length f = R/2, the focal length of a plane mirror is infinity.

Electric power in a circuit is given by P = V × I. Applying Ohm's law (V = IR), power can be written as P = (IR) × I = I² R or P = V × (V/R) = V² / R. The expression I R² has units of Amperes·\Omega², which does not denote power.

During a short circuit, resistance in the circuit drops to near zero, causing the electric current to increase enormously (very high), often leading to sparks or fires.

An electric fuse (or MCB) is a safety device containing a low-melting-point wire that melts and breaks the circuit whenever excess current flows, protecting appliances from damage.

Hydrochloric acid (HCl) is a strong monoprotic acid that dissociates completely in water (HCl -> H+ + Cl-). For a 0.1 N (0.1 M) solution, [H+] = 10^-1 mol/L. Therefore, pH = -log10[H+] = -log10(10^-1) = 1.0. Hence, Option D (1.0) is the correct answer.

Strontium aluminate doped with europium and dysprosium (SrAl2O4:Eu,Dy) is the modern phosphorescent pigment used for high-brightness, long-lasting glow-in-the-dark applications, outperforming traditional zinc sulfide.

Indium Tin Oxide (ITO) is a transparent conducting oxide widely coated on PET films to manufacture switchable smart film (PDLC glass/film) that transitions from opaque to transparent when an electric field is applied.

Platinum-based coordination complexes, notably Cisplatin [cis-Pt(NH3)2Cl2] and Carboplatin, are widely used chemotherapy drugs for treating various types of carcinomas and malignant tumors.

Levonorgestrel is a synthetic progestin hormone widely used in oral contraceptive pills (both regular combined pills and emergency contraceptive pills).

Fatty acids present in oil react with the zinc coating of galvanized iron, causing corrosion, degrading oil quality (rancidity), and forming potentially harmful/toxic zinc salts. Therefore, all of the reasons apply.

Tetraethyl lead (TEL), (C2H5)4Pb, was historically the premier antiknock additive mixed with gasoline to boost octane ratings and reduce engine knocking.

PHBV stands for Poly(3-hydroxybutyrate-co-3-hydroxyvalerate). It is a bacterial-derived aliphatic polyester that is fully biodegradable and biocompatible.

Hormones are biochemical regulatory substances secreted directly into the bloodstream without ducts by endocrine glands (e.g., pituitary, thyroid, adrenal, pancreas).

Herpes simplex virus is an obligate intracellular pathogen that invades and resides inside human host cells (specifically epithelial cells and sensory neuronal ganglia), which represents 'endoparasitism' (parasitism within the host's body).

IgM (Immunoglobulin M) is the first antibody isotype synthesized by B-lymphocytes in the primary immune response following initial antigen exposure.

Biological membranes consist predominantly of a phospholipid bilayer along with embedded and peripheral proteins (and carbohydrates) whose exact proportions differ depending on the species, cell type, and subcellular organelle.

In molecular biology, the three nonsense or stop codons that terminate protein translation are UAA (ochre), UAG (amber), and UGA (opal). AUG is the start codon (methionine).

According to the IUCN Red List classification, species facing a very high risk of extinction in the wild are designated as 'Endangered'.

Correct Answer: Option (B) — Sugarcane

Xylem is the specialized conducting vascular tissue in tracheophyte plants responsible for unidirectional transpirational pull-driven transport of water and dissolved inorganic mineral nutrients from root hairs up to leaves and stems.

Swiss botanist Augustin Pyramus de Candolle (A.P. de Candolle) in his 1813 treatise was the first to use the presence and structural characteristics of vascular conducting tissues (xylem and phloem) to classify plants into vascular (Vasculares) and cellular (Cellulares) divisions.

Mango is a drupe fruit derived from a monocarpellary superior ovary. The outer skin is epicarp, the stony inner part is endocarp, and the fleshy, succulent edible portion is the mesocarp.

World Ozone Day (International Day for the Preservation of the Ozone Layer) is observed globally on September 16, commemorating the signing of the landmark Montreal Protocol on Substances that Deplete the Ozone Layer in 1987.

In a mycorrhizal mutualistic symbiosis, the plant synthesizes carbohydrates via photosynthesis and supplies them to the fungal partner (making Option B a benefit to the fungus, not the plant). The fungal mycelium vastly expands the root surface area, significantly increasing the absorption of water and poorly mobile soil nutrients (especially phosphorus), while conferring protection against root pathogens. Therefore, Option D is the most accurate and complete benefit to the plant.