MCQ
Which of the following is ferromagnetic
  • A
    $Cr$
  • B
    $Mn$
  • C
    $W$
  • $Co$

Answer

Correct option: D.
$Co$
d
(d) The substances which are strongly attracted by magnetic field and show permanent magnetism even in absence of magnetic field are ferromagnetic e.g.. $Co,\,Fe,\,Ni$

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Similar questions

Highest stable $Mn$ fluoride is $MnF_4$ where as highest $Mn$ oxide is $Mn_2O_7$ due to
Which of the following are meso compound?
In the above reaction, maximum Saytzeff product will obtained when
An organic compound contains $49.3\%$ carbon $6.84\%$ hydrogen and its vapour density is $73$. Molecular formula of the compound is
$\begin{array}{*{20}{c}}
{C{H_3} - CH = C - C = CH - C{H_3}}\\
{|\,\,\,\,\,\,\,\,\,|}\\
{\,Br\,\,\,\,Cl}
\end{array}$

How many geometrical isomers are possible for this compound?

Consider the following statements in respect of oxides of sulphur. 

$(1)$ In gas phase $SO_2$ molecule is $V-$ shape.

$(2)$ In gas Phase $SO_3$ molecule is planar

$(3)$ $\gamma - SO_3$ is cyclic trimer 

Which oi the above statement are correct ?

The $pH $ of ${10^{ - 8}}$ molar aqueous solution of $HCl$ is
The correct order of increasing bond length of $C - H, C - O, C - C$ and $C=C$ is
What will be the products of reaction if methoxybenzene reacts with $HI$