Minerals

A rock which contains a useful mineral is call a/an

• gem
• quarry
• ore
• alloy

By definition, a mineral has which of the following characteristic(s)?

• definite chemical composition
• crystal structure
• naturally occuring
• all of the above

The mineral iron is primarily used to make

• jewelry
• tools
• cement
• glass

: Limestone is associated with

• a)Sedimentary rock

• (b) Igneous rock

• (c) Metamorphic rock

• (d) Tertiary rock

: Which one of the following minerals is formed by decomposition of rocks, leaving a residual mass of weathered material?

• (a) coal

• (b) bauxite

• (c) gold

• (d) zinc

Which is correct about Magnetite iron core?

• (a) Magnetite is the most important industrial iron ore in terms of quantity used.

• (b) Magnetite has the inferior magnetic qualities which is not valuable in the electric industry.

• (c) It is the finest iron ore with very high content of iron upto 70%.

• (d) It has a slightly lower iron content than hematite (50-60%)

They study minerals as part of earth's crust for a better understanding of land-forms. They are called:

• (a) Scientists

• (b) Geographers

• (c) Geologists

• (d) Ecologists

Koderma, in Jharkhand is the leading producer of which one of the following minerals?

• (a) bauxite

• (b) mica

• (c) iron ore

• (d) copper

Small occurrences of minerals in rocks are known as:

• (a) Lodes

• (b) Veins

• (c) Ores

• (d) Crevices

Which of the following minerals is contained in the Monazite sand?

• (a) Oil

• (b) Uranium

• (c) Thorium

• (d) Coal