Which of the following is not correct?

Which of the following compounds exhibits linkage isomerism?

The solubility product of silver bromide $(AgBr)$ is $5.0 \times 10^{-13}$. Calculate the mass of potassium bromide $(KBr)$ (molar mass = $120 \, g \, mol^{-1}$) that must be added to $1 \, L$ of a $0.05 \, M$ silver nitrate $(AgNO_3)$ solution to initiate the precipitation of $AgBr$.

The volume of one mole of the gas is changed from $V$ to $2 V$ at constant pressure $p$. If $\gamma$ is the ratio of specific heats of the gas,what is the change in internal energy of the gas?

Which endangered animal is the source of the world's finest, lightest, warmest, and most expensive wool-the Shahtoosh?

Which enzymes are likely to act on the baked potatoes eaten by a man,starting from the mouth and as it moves down the alimentary canal?