Size and extent

The governing concept is the measurement of a country’s coastal extent. A coastline is the boundary where land meets the sea, and a country’s total coastline includes the shores of its mainland as well as the shores of its islands. India’s island groups, especially the Andaman and Nicobar Islands and Lakshadweep, add substantial coastal length to the mainland figure. Therefore, option A is correct. The Himalayan boundary is an inland mountain boundary and cannot be counted as coastline. Land boundaries with neighbouring countries are measured separately, while the Tropic of Cancer is a parallel of latitude and has no role in measuring coastal length. The figure is therefore not an area or a land-border measurement.

The letters E or east show that the values are measured eastward from the Prime Meridian, so they are longitudes. The meridians at approximately 68°7′E and 97°25′E mark the western and eastern limits used to describe India’s east-west extent. Lines of longitude run from the North Pole to the South Pole and are used to locate positions east or west. Therefore, option A is correct. Lines of latitude are parallel circles measured north or south of the Equator and would be written with N or S, so option B is incorrect. Coastlines and state boundaries are irregular physical or political lines, not angular coordinate values expressed with E.

The suffix N means north of the Equator, so 8°4′N and 37°6′N are latitudes. These values indicate the approximate southern and northern limits of India’s mainland and therefore describe its north-south extent. Lines of latitude run parallel to the Equator and measure angular distance north or south. Hence option A is correct. Longitudes instead measure angular distance east or west from the Prime Meridian and are marked E or W, so option B is a category mistake. Ocean currents are moving bodies of seawater, not coordinate lines, while coastline segments are irregular edges between land and sea. The N notation is the decisive clue.

The governing concept is dimensional analysis in geography: the unit must match the type of quantity being measured. A coastline is the linear distance along the contact between land and sea, while a land boundary is the linear distance along the border separating India from neighbouring countries. Both are therefore lengths and are normally reported in kilometres. Option A is correct. Square kilometres measure area, such as the total area of India, so option B uses the wrong dimension. Percentages express proportions or shares, not the direct length of a boundary, making option C incorrect. Degrees measure angular position or angular extent, such as latitude and longitude, rather than the physical distance along a coast or border; hence option D is also wrong. Identifying the quantity before its unit is the safest way to solve this question.

The governing concept is latitude: it measures angular distance north or south of the Equator. Both 8°4′N and 37°6′N carry the suffix N, so they identify the southern and northern limits of India’s mainland in the Northern Hemisphere. Their difference, about 29°2′, indicates the north–south latitudinal span, although the actual ground distance varies slightly with latitude. Option A is correct because these coordinates describe India’s mainland as lying in northern latitudes. Option B is incorrect because western or eastern longitudes must be marked E or W. Options C and D make unrelated and factually false claims about area and boundaries.

The governing concept is the difference between mainland coastline and total coastline. The mainland coastline refers only to the coast bordering India’s continental landmass and is approximately 6,100 km. Total coastline adds the coastlines of the island groups, including the Andaman and Nicobar Islands and Lakshadweep, giving the commonly cited figure of about 7,516.6 km. Hence option A has the correct order: mainland first and total second. Option B reverses the two values. Option C incorrectly uses the approximate land-boundary figure for the first value, and option D gives unrelated smaller figures. Including islands must increase, not reduce, the total coastline.

The governing concept is hemispheric location determined by geographic coordinates. India lies north of the Equator, approximately between 8°4′N and 37°6′N, so it is in the Northern Hemisphere. It also lies east of the Prime Meridian, approximately between 68°7′E and 97°25′E, so it is in the Eastern Hemisphere. Hence option A correctly combines northern latitudes and eastern longitudes. Option B describes the opposite hemispheric combination. Coastline can describe maritime form but cannot establish a hemisphere, and an area percentage measures size rather than coordinate position. The answer must therefore use both latitude and longitude.

The governing concept is the division of the Earth by the Prime Meridian at 0° longitude. Longitudes measured eastward from this reference are called eastern longitudes, while those measured westward are western longitudes. Since India extends roughly from 68°7′E to 97°25′E, its location is east of the Prime Meridian. Thus option A is correct. Option B reverses the meaning of eastern longitude; option C confuses longitude with a polar location; and option D is meaningless because direction is an essential part of describing geographical position.

The governing concept is the scope of a geographical measurement. The word “total” signals that the measurement includes all relevant parts rather than only one component. Mainland coastline refers to the coast along India’s continuous continental landmass. Total coastline generally refers to the combined measurement of the mainland coast and the coasts of the country’s offshore islands, depending on the stated measurement convention. Therefore option A is correct. “North” indicates direction, “latitude” indicates angular position north or south of the Equator, and “percent” expresses a proportion. None of these explains why two coastline figures cover different areas. The decisive clue is the word that indicates complete inclusion, namely “total.”

Latitude and longitude are two complementary coordinate systems. Latitude measures angular distance north or south of the Equator, so differences in latitude describe a north-south span. Longitude measures angular distance east or west of the Prime Meridian, so differences in longitude describe an east-west span. In map work, this distinction helps identify India's position, compare its extent and understand why longitude is related to local time. Therefore, option A is correct. Option B reverses the two concepts, while options C and D incorrectly reduce coordinates to coastline or area; neither coordinate system alone is simply a measurement of area.

A coastline and a land boundary are linear features: each traces a line of contact between two geographical units. Their extent is therefore measured as distance, commonly in kilometres. Square kilometres are used for area, such as the surface area of a country or a lake, whereas kilometres are used for the length of a border, road or river. A coastline may be irregular, so its measured value can vary with map scale and measurement method, but its basic dimension remains length. Option A is correct. Options B and C confuse length with area or proportion, while option D mistakes boundary measurements for angular coordinate values expressed in degrees.

Longitudes are measured east or west from the Prime Meridian at 0° longitude. India's longitudes extend approximately from 68°7′E to 97°25′E, so it lies east of the Prime Meridian, in the Eastern Hemisphere. Its north-south position is described separately by latitude. Therefore, option A is correct.

The governing idea is the difference between length and area. Length is a one-dimensional measurement of distance and uses the unit kilometre, written km. Area measures a two-dimensional surface and uses square kilometres, written km². Option B contains 15,200 km, so it directly represents a linear extent or distance. Options A and D contain km², meaning that they represent area, not length. Option C is written as a percentage and expresses a share or proportion rather than either a direct length or an area. The numerical size alone is not enough to identify the type of measurement; the unit must be read carefully. Therefore, option B is unambiguously correct.

The governing concept is the comparison of India’s maximum north–south and east–west extent. India stretches approximately 3,214 km from north to south and about 2,933 km from east to west. Comparing these figures shows that the north–south length exceeds the east–west length by roughly 281 km. Thus, the correct description is “slightly greater,” not equal or much less. Option A is correct. Option C would be valid only if both measurements were the same, which they are not. Option B reverses the relationship, and option D is impossible because India clearly has substantial extent in both directions. The comparison concerns length, not area or population.

The governing concept is directional geographical extent. North-south extent measures how far a country extends from its northernmost point to its southernmost point, generally along the north-south direction. It is a measure of distance across the country, not a measurement of river length or mountain height. Option A is correct because it directly defines the distance between the northern and southern ends. Option B describes an east-west dimension and therefore relates more closely to breadth or east-west extent. Option C concerns a linear feature within the country, while option D measures vertical elevation rather than horizontal spatial spread. The direction named in the question determines which pair of extreme points must be considered.

The governing concept is directional extent, which describes the spatial distance between opposite extreme points. India’s east-west extent is the distance from its easternmost point to its westernmost point, measured across the country in an east-west direction. Thus, option A is correct. It represents a horizontal breadth-like dimension and helps explain variations in local time, climate, transport distance, and regional interaction, although those effects are not themselves the definition. Option B refers neither to east-west distance nor to a standard measure of extent. Option C measures the boundary of the coast, which is a different geographical quantity and may be irregular. Option D concerns population, not spatial measurement.