$(\sim (p \vee q)) \vee (\sim p \wedge q)$ is logically equivalent to

The structure of $IF_7$ is $......$ .

$(\sqrt{3}+i)^7+(\sqrt{3}-i)^7$ is equal to (in $sqrt{3}$)

An electrolytic cell contains a solution of $Ag_2SO_4$ and has platinum electrodes. $A$ current is passed until $1.6 \ g$ of $O_2$ has been liberated at the anode. The amount of silver deposited at the cathode would be ............. $g$.

The chloride of an element gives a neutral solution in water. To which group of the periodic table does this element belong?

The materials suitable for making electromagnets should have