Which of the following climatic zones can be categorized into the hot and dry zone?
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- Hot and dry zones are characterized by high temperatures and low rainfall, such as deserts and semi-arid regions.
- Zones with moderate temperatures and higher rainfall typically do not fall into the "hot and dry" classification.
- Zone-II
- Zone-I
- Zone-III
- Zone-IV
The Correct Option is C
Approach Solution - 1
The climatic classification of zones is typically based on temperature, humidity, and precipitation patterns. The hot and dry zone is characterized by high temperatures and low rainfall, leading to dry and arid conditions. Zone-III is classified as the hot and dry zone in many climatic classification systems, and it includes regions such as deserts and semi-arid areas, where high temperatures prevail throughout the year with minimal rainfall.
Why Other Options Are Incorrect:
- (A) Zone-II and (B) Zone-I are generally classified as cooler or more temperate zones, with more rainfall or moderate temperatures, and hence do not fall under the hot and dry category.
- (D) Zone-IV could represent a different type of zone, possibly a warm and humid or tropical zone, not a dry and hot one.
Thus, the correct answer is Zone-III, which represents the hot and dry zone.
Approach Solution -2
This question refers to the ICH climatic zone classification used for pharmaceutical stability testing, where the world is divided into zones based on mean temperature and humidity. Checking what each zone represents identifies the hot and dry one.
- Zone-II: Zone II covers subtropical and Mediterranean climates, with moderate temperature and humidity conditions, used for testing at around 25 degrees Celsius and 60% relative humidity. This is a temperate to warm profile, not a hot, dry desert-like one.
- Zone-I: Zone I represents temperate climates, such as those of the UK and parts of Northern Europe, with mild temperatures and moderate humidity, tested around 21 degrees Celsius and 45% relative humidity. This is the coolest of the four zones, the opposite of hot and dry.
- Zone-III: Zone III is defined as the hot, dry zone, characteristic of countries such as Iraq, Iran, Sudan, and parts of the Middle East, tested at around 30 degrees Celsius and 35% relative humidity. High temperature paired with low humidity is exactly the hot and dry description in the question.
- Zone-IV: Zone IV covers hot and humid to very humid tropical climates, such as those of India's coastal regions, Southeast Asia, and Brazil, tested at around 30 to 32 degrees Celsius with high, not low, humidity (around 65 to 75%). High humidity rules this zone out as the hot and dry category.
Since Zone III is specifically defined by high temperature combined with low relative humidity, this is the zone that fits a hot and dry climate.
Therefore, the correct answer is Zone-III.
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