Why Correct: Mouza is the basic unit for land revenue administration and census operations, representing a revenue village with defined boundaries.
Distractor Analysis: Community development block is a rural development unit under the Panchayati Raj system. Small police station refers to a police outpost or chowki, not a census unit.
Takeaway: In census terminology, 'town' refers to urban settlements with specific population and employment criteria, while 'village' includes all rural settlements including mouzas.

Why Correct: Urban areas combine high population density, settlement in towns/cities, and economic reliance on non-agricultural activities like industry and services.
Distractor Analysis: High population alone doesn't define urban; rural areas can have high populations but low density. Towns and cities are urban settlements by definition. Non-agricultural economic base distinguishes urban from rural agricultural economies.
Takeaway: India's census defines urban areas as having minimum population density of 400 persons/sq km, at least 75% male workforce in non-agriculture, and administrative status as municipality/cantonment/notified area.

Why Correct: India's Census defines a 'city' as any urban settlement with a population exceeding 100,000 residents.
Distractor Analysis: 'Town' describes urban settlements with populations between 5,000 and 100,000. 'Metropolis' refers to major urban centers with populations over one million. 'Megalopolis' denotes a continuous urban region formed by merging multiple metropolitan areas, like the Delhi-NCR or Mumbai-Pune corridors.
Takeaway: India's Census classifies urban areas into statutory towns (notified under state laws), census towns (meeting specific demographic and economic thresholds), and outgrowths (contiguous urban expansions of existing towns).

Why Correct: Hamleted settlements consist of several small, scattered clusters of houses separated by fields, characteristic of the middle Ganga plain regions like Bihar where physical barriers and social factors cause fragmentation.
Distractor Analysis: Madhya Pradesh features mostly compact or semi-compact settlements in its plateau regions. Punjab has predominantly compact, nucleated settlements due to fertile plains and irrigation. Haryana also shows compact rural settlements in its agricultural plains.
Takeaway: Settlement patterns correlate with terrain: compact in fertile plains (Punjab), hamleted in flood-prone or socially divided areas (Bihar), and dispersed in hilly or forested regions (Northeast).

Why Correct: Urban geography defines a Megalopolis as a continuous urban region with a population of at least 10 million (1 crore) people, formed by the merging of multiple metropolitan areas.
Distractor Analysis: 1,00,000 (1 lakh) represents a small city threshold, 10,00,000 (10 lakhs) marks a metropolitan area, and 50,00,000 (50 lakhs) is a large metropolitan region but not yet megalopolitan scale.
Takeaway: In Indian urban classification, cities with 1-10 lakh population are Class I cities, while those above 10 lakhs are metropolitan cities.