Medium Level – GK Questions

The aorta is the main artery carrying oxygen-rich blood from the left ventricle to systemic circulation. Pulmonary artery carries deoxygenated blood to lungs. Critical for understanding human physiology. [[NCERT Biology Class 11]]

Wi-Fi operates on 2.4 GHz or 5 GHz radio frequency bands to transmit data wirelessly between devices and routers. Understanding this helps in troubleshooting network issues and cybersecurity awareness. [[NCERT Computer Science]]

Transpiration is the evaporation of water from plant leaves via stomata. It aids in water uptake, nutrient transport, and cooling. Excessive transpiration can cause wilting. Key concept in botany. [[NCERT Biology Class 11]]

Rusting (formation of hydrated iron(III) oxide) is a chemical change involving oxidation of iron in presence of oxygen and water. It alters chemical composition, unlike physical changes like melting. Important for basic chemistry concepts. [[NCERT Chemistry Class 10]]

A light year is the distance light travels in one year in vacuum (~9.46 trillion km). It's used in astronomy to measure vast interstellar distances, not time. Common trick question in exams. [[NCERT Physics Class 11]]

Mercury (Hg) is the only metal liquid at standard room temperature (25°C) due to weak metallic bonding. It's used in thermometers, barometers, and electrical switches. Bromine is the only non-metal liquid at room temperature. [[NCERT Chemistry Class 10]]

Scurvy results from Vitamin C deficiency, causing weakened collagen synthesis, leading to bleeding gums, joint pain, and poor wound healing. Citrus fruits are rich sources of Vitamin C. Important for health-related exam questions. [[NCERT Biology Class 11]]

Eutrophication occurs when nutrient runoff (from fertilizers, sewage) causes algal blooms. Depleted oxygen levels from decomposing algae kill aquatic life. It's a major water pollution issue addressed in environmental policies. [[NCERT Biology Class 12, CPCB Reports]]

Gastric glands in the stomach lining secrete pepsinogen, which converts to active pepsin in acidic environment. Pepsin breaks down proteins into peptides, initiating protein digestion. This is a key concept in human physiology. [[NCERT Biology Class 11]]

HCl completely dissociates in water into H⁺ and Cl⁻ ions, making it a strong acid. Weak acids like acetic acid only partially dissociate. Strong acids are highly corrosive and used in industrial processes. [[NCERT Chemistry Class 10]]

Light travels fastest in vacuum (≈3×10⁸ m/s). In denser media like glass, light slows down due to refraction, with speed reducing to about 2×10⁸ m/s. This principle is fundamental in optics. [[NCERT Physics Class 12]]

The Battle of Plassey (1757) is considered the foundation of British political power in India. Robert Clive's victory over Siraj ud-Daulah enabled the East India Company to gain control of Bengal's revenues. [[1]]

The Dandi March (Salt Satyagraha) began on March 12, 1930, with Gandhi walking 240 miles from Sabarmati Ashram to Dandi. He broke the salt law on April 6, launching the Civil Disobedience Movement. [[1]]

The Right to Information Act was enacted in 2005, empowering citizens to seek information from public authorities. It promotes transparency, accountability, and participatory governance in democracy. [[1]]

Ayushman Bharat - Pradhan Mantri Jan Arogya Yojana was launched in September 2018. It aims to provide health insurance coverage of ₹5 lakh per family per year for secondary and tertiary care hospitalization. [[1]]

GST was implemented on July 1, 2017, subsuming multiple indirect taxes into a unified tax system. It was a major economic reform aimed at creating a common national market and improving tax compliance. [[1]]

The 73rd Amendment (Panchayats) and 74th Amendment (Municipalities) in 1992 gave constitutional status to local self-government institutions, ensuring regular elections, reservations, and financial devolution. [[30]]

The Union Public Service Commission (UPSC) is established under Article 315 of the Constitution. It conducts examinations for recruitment to All India Services and Central Services, ensuring merit-based selection. [[30]]

The Indian Civil Service (ICS), the elite administrative service under British rule, was replaced by the Indian Administrative Service (IAS) after independence. The IAS continues as the premier civil service of India. [[30]]

The Kumbh Mela, the world's largest religious gathering, was inscribed on UNESCO's Representative List of Intangible Cultural Heritage of Humanity in 2017, recognizing its cultural and spiritual significance. [[1]]