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Which igneous rock is used by dentists for polishing of teeth?
____ is obtained from petroleum and is used to make candles and polish.
A metamorphic rock which is used in the glass and ceramic industry.
Which among the following is not a product obtained from petroleum?
A sedimentary rock, which is used in making bricks and cement.
Which among the following rock is formed by metamorphosis of sandstone
____ is a kind of sedimentary rock that is made of plant remains buried under the earth.
Name an igneous rock which is smooth, glassy and used in making jewellery.