Ores, Minerals and Extractions Chemistry Test Series IIT JEE

Test Preparation on Ores, Minerals and Extractions-Chemistry Test Series IIT JEE-2020

1.

Which one of the following is an ore of silver-

1Argentite
2Stibnite
3Haematite
4Bauxite

2.

“Metals are usually not found as nitrates in their ores”
Out of the following two (A and B) reasons which is / are true
for the above observation
(A) Metal nitrates are highly unstable
(B) Metal nitrates are highly soluble in water

1Metal nitrates are highly soluble in water
2A and B are false
3A is false but B is true
4A and B are true

3.

Which of the following is a carbonate ore

1Pyrolusite
2Malachite
3Diaspore
4Cassiterite

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