The question asks about the classification of resources based on their renewability. This is a fundamental concept in geography and environmental studies, often covered in competitive exams. We need to identify the correct categories that define resources based on whether they can be replenished or not.
A) Renewable (replenished naturally: solar, wind, water, forests) and Non-renewable (exhaustible: coal, petroleum, minerals). This option accurately defines and provides correct examples for both renewable and non-renewable resources, which are the two main categories when classifying resources based on their renewability.
The question asks for the definition of 'ubiquitous resources' in geography. We need to identify the option that correctly describes resources found everywhere and accessible to all.
Correct Option: C) Found everywhere (e.g., air, solar energy, wind) — available to all people regardless of location
The question asks to identify the best example of a 'potential resource' in geography. A potential resource is one that exists in a region and could be used in the future, but is not currently being utilized due to a lack of appropriate technology, economic viability, or other constraints.
D) Uranium reserves in Kerala which exist but are not yet fully exploited due to technology/economic constraints. This is the best example of a potential resource because it is known to exist but is not currently fully utilized due to limiting factors, implying future potential.
The question asks for the main categories into which minerals are classified based on their composition. We need to evaluate each option to determine which one represents a standard classification method for minerals based on their chemical and physical properties.
Correct Option: D) Metallic (ferrous and non-ferrous) and Non-metallic minerals. This is the widely accepted and fundamental classification of minerals based on their chemical composition and properties.
The question asks to identify the variety of coal with the highest carbon content and greatest heating value. This requires knowledge of the different types of coal and their characteristics, particularly their carbon content and energy output.
Correct Option: B) Anthracite has the highest carbon content (about 80–95%) and the greatest heating value among the given options. It is the highest rank of coal, burning with a hot, clean flame.
The question asks why coal is referred to as 'Buried Sunshine'. This metaphor points to the origin of the energy stored within coal. We need to recall the formation process of coal and the ultimate source of its energy.
Correct Option: B) It was formed from ancient plants that stored solar energy through photosynthesis over millions of years under heat and pressure