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MRI stands for Magnetic ________ Imaging.
- Resonance
- Radiation
- Reflection
- Refraction
Answer: Resonance
MRI uses strong magnetic fields and radio waves to align hydrogen nuclei; resonance signals create detailed soft-tissue images. No ionizing radiation, unlike CT/X-rays. [[NCERT Physics Class 12]]
The Ostwald process is used for the industrial production of ________ acid.
- Sulfuric
- Nitric
- Phosphoric
- Hydrochloric
Answer: Nitric
Ostwald process: catalytic oxidation of NH₃ to NO, then to NO₂, absorbed in water to form HNO₃. Critical for fertilizers, explosives, and chemical synthesis. [[NCERT Chemistry Class 12]]
Ayushman Bharat Digital Mission (ABDM) aims to create a unified ________ infrastructure for healthcare.
- Insurance
- Digital
- Hospital
- Pharmacy
Answer: Digital
ABDM (2021) enables digital health IDs, electronic records, and interoperable systems for seamless healthcare access. Part of India's digital public infrastructure strategy. [[MoHFW, NHA Reports]]
CAMPA stands for Compensatory Afforestation Fund Management and ________ Authority.
- Planning
- Policy
- Protection
- Preservation
Answer: Planning
CAMPA (2016) manages funds collected for diverting forest land for non-forest use. Ensures afforestation, ecosystem restoration, and tribal welfare. Critical for environmental governance. [[MoEFCC Reports, NCERT Geography Class 11]]
The One Health approach recognizes the interconnection between human health, animal health, and the ________.
- Climate
- Environment
- Economy
- Technology
Answer: Environment
One Health is a collaborative, multisectoral approach acknowledging that human, animal, and environmental health are linked. Critical for zoonotic disease prevention (e.g., COVID-19, Nipah). [[WHO, MoHFW Guidelines]]
India's LiFE Mission stands for Lifestyle for ________.
- Environment
- Energy
- Ecology
- Earth
Answer: Environment
LiFE (Lifestyle for Environment) was launched by PM Modi at COP26 (2021) to promote mindful consumption and sustainable living. It emphasizes individual actions for collective climate impact. [[MoEFCC, NITI Aayog Reports]]
The SI unit of pressure is ________.
- Newton
- Pascal
- Joule
- Watt
Answer: Pascal
Pascal (Pa) = N/m². Atmospheric pressure ≈ 101,325 Pa = 1 atm. Barometer measures pressure; manometer measures gas pressure. Essential for fluid mechanics. [[NCERT Physics Class 11]]
The Chipko Movement, aimed at forest conservation, originated in the state of ________.
- Uttarakhand
- Himachal Pradesh
- Kerala
- Karnataka
Answer: Uttarakhand
Chipko (1970s, Uttarakhand): villagers hugged trees to prevent logging. Pioneered eco-feminism and community-based conservation. Landmark environmental movement in India. [[MoEFCC, NCERT Geography Class 11]]
The primary structure of a protein refers to the sequence of ________.
- Nucleotides
- Amino acids
- Fatty acids
- Monosaccharides
Answer: Amino acids
Primary structure: linear sequence of amino acids linked by peptide bonds. Determines higher-order folding and function. Central to biochemistry. [[NCERT Chemistry Class 12]]
The voice box in humans is called the ________.
- Pharynx
- Larynx
- Trachea
- Bronchus
Answer: Larynx
Larynx contains vocal cords; vibration produces sound. Epiglottis prevents food entry during swallowing. Key anatomy for physiology questions. [[NCERT Biology Class 11]]
The kinetic energy of a body is directly proportional to the square of its ________.
- Mass
- Velocity
- Momentum
- Acceleration
Answer: Velocity
KE = ½mv²: kinetic energy ∝ mass and ∝ (velocity)². Doubling speed quadruples KE. Critical for mechanics and safety calculations. [[NCERT Physics Class 11]]
PDF stands for ________ Document Format.
- Portable
- Printable
- Personal
- Public
Answer: Portable
PDF (Portable Document Format), developed by Adobe, preserves formatting across devices/platforms. Widely used for official documents, e-books, forms. Basic computer awareness. [[NCERT Computer Science]]
Tollens' reagent is used to distinguish aldehydes from ketones by producing a ________ mirror.
- Gold
- Silver
- Copper
- Platinum
Answer: Silver
Tollens' test: Aldehydes reduce [Ag(NH₃)₂]⁺ to metallic silver (silver mirror); ketones don't react. Classic test for carbonyl compounds. [[NCERT Chemistry Class 12]]
Pollination by wind is called ________.
- Hydrophily
- Anemophily
- Entomophily
- Ornithophily
Answer: Anemophily
Anemophily: wind pollination (e.g., grasses, cereals). Flowers are small, inconspicuous, produce abundant light pollen. Contrasts with biotic pollination (insects, birds). [[NCERT Biology Class 12]]
The resistance of a conductor is directly proportional to its ________.
- Area of cross-section
- Length
- Temperature
- Both length and temperature
Answer: Length
R = ρL/A: resistance ∝ length (L), ∝ resistivity (ρ), ∝ 1/area (A). Temperature increases ρ for metals. Fundamental for circuit design. [[NCERT Physics Class 10]]
The Namami Gange Programme aims to rejuvenate the ________ River.
- Yamuna
- Ganga
- Brahmaputra
- Godavari
Answer: Ganga
Namami Gange (launched 2014) is an integrated conservation mission for pollution abatement, rejuvenation, and sustainable use of the Ganga. Flagship environmental program. [[NMCG Reports, NCERT Geography Class 11]]
The Tyndall effect is observed in ________.
- True solutions
- Colloids
- Suspensions
- Pure liquids
Answer: Colloids
Tyndall effect: scattering of light by colloidal particles, making beam visible. True solutions don't scatter; suspensions settle. Used to distinguish colloids. [[NCERT Chemistry Class 12]]
Bile is produced by the ________ and stored in the gallbladder.
- Pancreas
- Liver
- Stomach
- Small intestine
Answer: Liver
Liver synthesizes bile (contains bile salts for fat emulsification); gallbladder concentrates and stores it. Released into duodenum during digestion. Key for physiology. [[NCERT Biology Class 11]]
The frequency range of visible light is approximately ________ Hz.
- 10¹⁴
- 10¹⁶
- 10¹⁸
- 10²⁰
Answer: 10¹⁴
Visible light: 4×10¹⁴ Hz (red) to 8×10¹⁴ Hz (violet); wavelength 700-400 nm. Higher frequency than IR, lower than UV. Important for EM spectrum questions. [[NCERT Physics Class 12]]
The portal for filing Income Tax Returns in India is ________.
- TRACES
- e-Filing
- NSDL
- CPC
Answer: e-Filing
https://www.incometax.gov.in is the official e-Filing portal for ITR submission, TDS tracking, and tax services. Part of Digital India for transparent governance. [[CBDT Guidelines]]