1997 General Studies, all questions

UPSC Prelims 1997 · General Studies

Question 87: Geography

Daily weather map showing isobars is an example of

aChoropleth map
bIsopleth map
cChorochromatic map
dChoroschematic map

AnswerThe answer is (b).

An isopleth map joins places of equal value by a line. Isobars (equal pressure), isotherms (equal temperature) and contours (equal height) are all isopleths, so a daily weather map showing isobars is an isopleth map. A choropleth map shades areas by a value, a chorochromatic map colours areas by a quality, and a choroschematic map uses patterns or symbols for areas.

Why each option is right or wrong
  • (a) A choropleth map shades areas by density or rate.
  • (b) Right: isobars are lines of equal value, so the map is an isopleth map.
  • (c) A chorochromatic map colours areas by a quality, such as land use.
  • (d) A choroschematic map uses patterns or symbols for areas.

Explanation: written by UPSC Grade, not by UPSC.

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Source: UPSC, Civil Services (Preliminary) Examination 1997, General Studies. UPSC's own paper isn't online; the words are from a published compilation. The paper on upsc.gov.in.