Question

Which one of the following is an ore of silver?

A. Argentite  
B. Stibnite
C. Haematite
D. Bauxite
Answer :   Argentite
Solution :
The argentite or silver glance is $$A{g_2}S,$$  it is an ore of silver. Haematite $$F{e_2}{O_3}$$  is ore of iron, bauxite is ore of aluminium whereas stibnite $$S{b_2}{S_3}$$  sometimes stibnite called antimonite is an ore of antimony.

Releted MCQ Question on
Inorganic Chemistry >> D and F Block Elements

Releted Question 1

When same amount of zinc is treated separately with excess of sulphuric acid and excess of sodium hydroxide, the ratio of volume of hydrogen evolved is

A. $$1:1$$
B. $$1:2$$
C. $$2:1$$
D. $$9:4$$
Releted Question 2

Which of the following is the weakest base

A. $$NaOH$$
B. $$Ca{\left( {OH} \right)_2}$$
C. $$KOH$$
D. $$Zn{\left( {OH} \right)_2}$$
Releted Question 3

One of the constituent of German silver is

A. $$Ag$$
B. $$Cu$$
C. $$Mg$$
D. $$Al$$
Releted Question 4

Which of the following dissolve in hot conc.$$NaOH$$  solution

A. $$Fe$$
B. $$Zn$$
C. $$Cu$$
D. $$Ag$$

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D and F Block Elements


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