Question 1

Which of the following is the principal ore of Aluminium?

Accepted Answer

Bauxite. Bauxite is the primary ore used for the commercial production of aluminium. It is typically found in tropical and subtropical regions. Most of the world's aluminium is extracted through the Bayer process.

Question 2

Cinnabar is a mineral ore of which metal?

Accepted Answer

Mercury. Cinnabar is the bright red sulfide mineral of mercury. It has been used as a pigment since ancient times. Heating this ore is the standard method to release liquid mercury.

Question 3

The ore known as 'Galena' is primarily composed of which element?

Accepted Answer

Lead. Galena is the most important ore of lead and often contains silver. It crystallizes in the cubic system and has a metallic luster. Lead is frequently used in batteries and radiation shielding.

Question 4

Siderite is an ore consisting mainly of which metal?

Accepted Answer

Iron. Siderite is a valuable iron mineral composed of iron carbonate. It is often found in sedimentary deposits alongside coal. It contains about 48% iron when pure.

Question 5

Which metal is extracted from the ore 'Pyrolusite'?

Accepted Answer

Manganese. Pyrolusite is the most common mineral of manganese. It is chemically known as manganese dioxide. Manganese is essential for the production of high-quality steel.

Metals & Ores — Set 1