Which of the following compounds is metallic and ferromagnetic?
A.
$$V{O_2}$$
B.
$$Mn{O_2}$$
C.
$$Ti{O_2}$$
D.
$$Cr{O_2}$$
Answer :
$$Cr{O_2}$$
Solution :
Out of all the four given metallic oxides $$Cr{O_2}$$ is attracted by magnetic field very strongly. The effect persists even when the magnetic field is removed. Thus $$Cr{O_2}$$ is metallic and ferromagnetic in nature.
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