Which among the following is a dicarboxylic acid?

Four resistors $A, B, C$ and $D$ form a Wheatstone bridge. The bridge is balanced when $C = 100 \ \Omega$. If $A$ and $B$ are interchanged,the bridge balances for $C = 121 \ \Omega$. The value of $D$ is (in $Omega$)

Under which one of the following conditions do real gases approach the ideal gas behaviour?

Identify the fibrous protein from the following.

$A$ uniform cube is subjected to volume compression. If each side is decreased by $1\%,$ then the bulk strain is

In the photoelectric effect,if the work functions of $Li$,$Na$,and $Rb$ are $2.41 \ eV$,$2.30 \ eV$,and $2.09 \ eV$ respectively,what could be the approximate work function of $K$ in $eV$?