If $X+~\left[ \begin{matrix} -1 & -2 \\ 0 & -1 \\ \end{matrix} \right]=\left[ \begin{matrix} 1 & 0 \\ 0 & 1 \\ \end{matrix} \right]$ then $X$ is equal to

If $\left| \begin{matrix} 2 & 6 \\ 3 & x \\ \end{matrix} \right|=0$, then $x$ is equal to

Product of $\left[ \begin{matrix} x & y \\ \end{matrix} \right]\left[ \begin{matrix} 2 \\ -1 \\ \end{matrix} \right]$ is

Adjoint of $\left[ \begin{matrix} 1 & 2 \\ 0 & -1 \\ \end{matrix} \right]$ is

Order of transpose of $\left[ \begin{matrix} 2 & 1 \\ 0 & 1 \\ 3 & 2 \\ \end{matrix} \right]$ is

Which of the following is the order of a square matrix

$\left[ \begin{matrix} \sqrt{2} & 0 \\ 0 & \sqrt{2} \\ \end{matrix} \right]$ is called ………... matrix.

The order of matrix $\left[ \begin{matrix} 2 & 1 \\ \end{matrix} \right]$ is

Pakistan is divided into _________ regions with reference to different land features. 

Which of the following is the reason that iron is the most abundant element?

Which element does not show magnetic properties?

Which metal is not attracted by magnet?

Number of unpaired electrons in ferrous ion is

What is not true about transition metals?

Acidified $\rm{K_{2}Cr_{2}O_{7}}$ is also called

What is not true about $\rm{K_{2}Cr_{2}O_{7}}$?

Which element of group V-B does not have an unpaired valence electrons in d-sub shell?

Which of the following does not have an incomplete d-orbital?

Which of the following has the lowest boiling point?

Transition elements are colored in which type of compounds?

d-d transitions in transition metals gives?

Transition elements are colored because of

Heat of vaporization of water is _______ kcal/kg

Which of the following has greater specific heat?

If a system absorbs heat, the surrounding temperature