Question

29. Which of the following is not an ore
(a) Bauxite
(b) Malachite
(c) Zinc blende
(d) Pig iron
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Answer 1

It's (d) pig iron

Hope it helps you....

Answer 2

Pig iron is not an ore

Explanation:

• Pig iron is the intermediate product extracted from iron ore in a blast furnace. Pig iron is used as raw material in steel making. Pig iron gets its name from the old fashioned method of casting the iron into moulds arranged in sand beds so that they could be fed from a common runner.
• This was invented in 1828 by James Beaumont Neilson and transformed the iron industry, launching the second phase of the industrial revolution in Scotland. The iron was made at 1500 degrees Celcius in huge 60 foot high furnaces before being cast in beds of sand as a series of bars called pigs.

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