Test Preparation on Ores, Minerals and Extractions-Chemistry Test Series For NEET-2020

1.

Which one of the following is an ore of silver

1Argentite
2Stibnite
3Haematite
4Bauxite

2.

Cassiterite is an ore of

1Mn
2Ni
3Sb
4Sn

3.

The most abundant metal in the earth crust is

1Na
2Mg
3Al
4Fe

Al is most abundant metal in the earth crust.

4.

Which one of the following is a mineral of irons

1Malachite
2Cassiterite
3Pyrolusite
4Magnetite

5.

“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

1Metal nitrates are highly unstable
2Metal nitrates are highly soluble in water
3A and B are false (b) A is false but B is true
4A is true but B is false (d) A and B are true

Nitrates are less found in earth crust because they are
highly water soluble and very stable because do not
decompose easily on heating so the answer is (b).


Right Ans	Wrong Ans	Not Attempted