With reference to India, Didwana, Kuchaman, Sargol and Khatu are the names of

Defines where mangroves occur: along shallow coasts, tidal flats, estuaries in tropical/subtropical areas.

Compare locations of the four names on a map — if they are inland/desert rather than tidal coasts/estuaries, they are unlikely to be mangrove areas.

Specifies tidal (mangrove) forests occur along Bay of Bengal states and in Kutch/Kathiawar — i.e., specific coastal regions and states.

Check whether the four names lie in those listed coastal states or in other (inland) states to assess plausibility.

Provides an explicit list/table of named major mangrove areas and their states — none of these four names appear in the examples shown.

Use the principle that named major mangrove areas are listed by region/state; absence from such lists suggests these names are not (major) mangrove areas.

Emphasises mangroves occur on coasts (west coast, east coast, Gujarat, Andaman) and notes inland or non-coastal regions have sparse or no mangroves.

Determine whether the four names are located in coastal districts versus inland districts to evaluate whether they fit typical mangrove locations.

Lists major mangrove concentrations (Andaman & Nicobar, Sunderbans, Mahanadi/Godavari/Krishna deltas) — implying mangroves concentrate in specific coastal/deltaic zones.

Verify if the four names are in deltaic/coastal zones named here; if not, they are less likely to be mangrove areas.

Identifies Didwana and Kuchaman as playas (saline lake beds) in Rajasthan — the type of wetland that can be of international interest.

A student could check lists of Ramsar sites for saline lakes in Rajasthan (or check if these specific playas were recently notified) to see if such playa-type sites are designated.

Notes Didwana and Kuchaman among named salt water lakes/places in the Rajasthan plains (alongside Sambhar and others), indicating these are notable wetlands in that region.

Using a map or Ramsar site list for India, a student could look up Ramsar designations in Rajasthan to see whether these named lakes appear.

Gives a concrete example that a major Rajasthan salt lake (Sambhar) has been designated a Ramsar site, showing that Rajasthan saline lakes are candidates for Ramsar listing.

A student can use this pattern (Rajasthan salt lakes can be Ramsar sites) to prioritize checking Didwana/Kuchaman/Sargol/Khatu in official Ramsar or government lists.

States India is a contracting party with many (presently 60) Ramsar sites — implying numerous sites overall, so new/lesser-known wetlands could be among them.

A student should consult the current official Ramsar list for India (or a government inventory) to verify whether these specific localities are included.

Explicitly lists 'playas (saline lake beds)' in the region and gives examples including Kuchaman and Didwana as such dhands (saline lake beds).

Check a map/gazetteer to confirm Kuchaman and Didwana locations lie in the arid Thar/RAJASTHAN playa belt; if so, this supports them being saline lakes.

Describes Sambhar as the largest salt lake in Rajasthan and notes local salt-production from evaporation ponds, illustrating the common presence of saline lakes in that region.

Use regional climate and proximity to Sambhar to infer that nearby basins or dhands (e.g., Sargol or Khatu if nearby) are likely saline and used for salt production.

Gives a general example that inland drainage region lakes in Rajasthan can be seasonal salt lakes (citing Sambhar) and that such lakes are used for producing salt.

Locate Sargol and Khatu on a map to see if they fall in the inland drainage/arid Rajasthan zone; if so, they may also be seasonal saline lakes.

Defines lake categories including 'brackish or saline lakes' and distinguishes them from freshwater lakes, providing a classificatory rule for identifying lake type.

Combine this definition with local salinity indicators (salt production, evaporation ponds, arid setting) to classify Didwana, Kuchaman, Sargol and Khatu as saline or not.

Describes the environmental conditions (low rainfall, high evaporation) under which salinity/alkalinity develop in soils and surface depressions.

Verify that the places in question lie in low-rainfall/high-evaporation areas (e.g., Rajasthan desert); if yes, such conditions favour formation of saline lakes/dhands.