What are the two main categories of minerals based on their chemical and physical properties?

metallic minerals and non-metallic minerals.

Fill in the blank: Metallic minerals are typically found in association with ___ rocks.

Igneous

True or False: Non-metallic minerals usually have a natural shine.

False. Non-metallic minerals do not have a natural shine.

What is one reason why minerals are considered exhaustible resources?

Minerals are exhaustible resources because they cannot be replenished immediately, making conservation important.

Fill in the blank: Examples of metallic minerals include iron, copper, ___, and tin.

Bauxite

What characteristic of minerals reflects their differences in chemical composition?

Variability, as minerals vary in color, lustre, and texture, which are important for identifying and classifying them.

Multiple Choice: Which of the following is a non-metallic mineral? 
a) Bauxite 
b) Iron 
c) Coal 
d) Tin

C) Coal

Fill in the blank: India has a wide variety of minerals due to its diverse ___ makeup.

Geological

Coal is primarily formed from the remains of ___ that were buried in ancient swamp forests.

Plants and ferns

What are the four main types of coal classified based on carbon content, moisture, and volatile matter?

Anthracite, bituminous, lignite, and peat

True or False: Anthracite coal has a carbon content of less than 50%.

False. Anthracite coal has a carbon content of over 90%.

Fill in the blank: Anthracite coal burns slowly and produces little ___, making it a cleaner burning fuel.

Smoke

Coal is primarily used for electricity generation in which type of plants?

Coal is primarily used as a fuel source in thermal power plants for producing electricity.

Fill in the blank: Gondwana coalfields constitute ___% of India’s coal reserves.

98