Subject :NSO Class : Class 5
Which of the following statements is incorrect?
APrecious rocks like ruby and emerald are used for making jewellery.
BMarble is formed by cooling of lava.
CBlack gold is another name of petroleum.
DShale is used to make tiles and bricks.
Ans 1:
Class : Class 5
BMarble is a metamorphic rock which is formed when limestone is exposed to high temperatures and pressures. It is not formed by cooling of lava.
Ans 2: (Master Answer)
Class : Class 1
B
Marble is a metamorphic rock which is formed when limestone is exposed to high temperatures and pressures. It is not formed by cooling of lava.
Ans 3:
Class : Class 5
how is petrol black gold?ð§