Question

2.
1. SHORT-ANSWER TYPE QUESTIONS
1. Name the main types of iron-ore. Mention the best variety of iron-ore in which ore content is
maximum.
(1) What is bauxite ?
[ISC 1996]
(ii) Name two uses of aluminium.
[ISC 1996]
3. Name the ore for aluminium. Describe uses of aluminium.
[ISC 2000]
4. Mention the industrial uses of aluminium.
[ISC 2001]
5
5. What grade of iron is mostly mined in India? Name two leading iron-ore producing states.
[ISC 2002]
6. State any two ways by which renewable sources of energy are better than non-renewable
sources.
[ISC 2003]​

Answer 1

Answer:

Hematite and magnetite are by far the most common types of ore. Pure magnetite contains 72.4 percent iron, hematite 69.9 percent, limonite 59.8 percent, and siderite 48.2 percent, but, since these minerals never occur alone, the metal content of real ores is lower.