Easy Level – GK Questions

Yeast (Saccharomyces cerevisiae) is a unicellular fungus. It ferments sugars to produce CO₂ (leavens bread) and ethanol (in brewing). Important for applied biology. [[NCERT Biology Class 11]]

NDMA, established under Disaster Management Act 2005, is chaired by the Prime Minister for policy planning and coordination of disaster response. Important for governance and current affairs. [[NDMA Guidelines, NCERT Geography Class 11]]

Aadhaar is a 12-digit biometric ID for Indian residents, enabling access to subsidies and services. Part of Digital India initiative for inclusive governance. [[UIDAI Reports, NCERT Computer Science]]

As per WHO and CPCB, prolonged exposure above 85 dB can cause hearing damage. Noise pollution regulations limit industrial/residential noise levels. Important for environmental awareness. [[CPCB Guidelines, NCERT Geography Class 11]]

Femur (thigh bone) is the longest and strongest bone, supporting body weight and enabling movement. Critical for anatomy questions in exams. [[NCERT Biology Class 11]]

Ohm's Law: Voltage (V) = Current (I) × Resistance (R). Valid for ohmic conductors at constant temperature. Foundation for circuit analysis. [[NCERT Physics Class 10]]

Autotrophs (e.g., plants, cyanobacteria) synthesize organic compounds from inorganic sources via photosynthesis/chemosynthesis. They form the base of food chains. Basic ecology concept. [[NCERT Biology Class 12]]

In light-dependent reactions, water photolysis splits H₂O into O₂, protons, and electrons. The O₂ is released as byproduct. Confirmed by isotopic labeling experiments. [[NCERT Biology Class 11]]

Biogas (from anaerobic digestion of organic waste) contains 50-75% methane (CH₄), a clean fuel. Promoted under GOBAR-DHAN scheme for rural energy and waste management. [[MNRE Reports, NCERT Chemistry Class 11]]

PM2.5 particles are fine inhalable particles (≤2.5 μm) that penetrate deep into lungs, causing respiratory/cardiovascular issues. Monitored under National Air Quality Index. [[CPCB Reports, NCERT Geography Class 11]]

Conduction occurs via molecular collisions in solids (e.g., metal rod heating). Convection involves fluid movement; radiation uses electromagnetic waves. Basic thermodynamics concept. [[NCERT Physics Class 11]]

Harvested rainwater percolates into aquifers, replenishing groundwater tables. Critical for sustainable water management in water-stressed regions like India. [[CGWB Reports, NCERT Geography Class 11]]

As per Solid Waste Management Rules 2016: Green bin = wet/biodegradable waste (food scraps); Blue = dry/recyclable; Red = domestic hazardous. Important for civic awareness questions. [[MoHUA Guidelines, NCERT Geography Class 11]]

1 Byte = 8 bits (binary digits). This standard unit conversion is essential for understanding computer memory, data transfer rates, and digital storage concepts. [[NCERT Computer Science]]

Fertilization (sperm-egg fusion) happens in the ampulla region of fallopian tube. The zygote then implants in uterus. Critical for human reproduction topics. [[NCERT Biology Class 12]]

Alveoli are microscopic sacs surrounded by capillaries. Oxygen diffuses into blood, CO₂ diffuses out. Their large surface area (~70 m²) enables efficient respiration. Key anatomy concept. [[NCERT Biology Class 11]]

pH < 7 indicates acidic solution; pH > 7 is basic; pH = 7 is neutral. pH scale measures hydrogen ion concentration. Fundamental for acid-base chemistry in exams. [[NCERT Chemistry Class 10]]

Solids have fixed shape and volume due to strong intermolecular forces holding particles in fixed positions. Liquids have fixed volume but variable shape; gases have neither. Basic concept in matter classification. [[NCERT Chemistry Class 9]]

Myopia is corrected using concave (diverging) lenses. Convex (converging) lenses correct hypermetropia (farsightedness). Understanding lens applications is essential for optics questions in exams. [[NCERT Physics Class 10]]

Acceleration (a = Δv/Δt) measures how quickly velocity changes. It's a vector quantity with SI unit m/s². Negative acceleration is deceleration. Fundamental in kinematics for physics exams. [[NCERT Physics Class 9]]