Which one of the following compounds will give dimethyl glyoxal with $SeO_2$?

Which of the following will give $-ve$ Tollen's but $+ve$ Iodoform test?

Which of the following organic compounds will give a colored crystalline product with the compound shown in the image?

The major product formed in the following reaction sequence is $CH_3-CH=CH_2$ $\xrightarrow[\substack{(iii) \ CH_3-CH_2-CHO \\ (iv) \ CrO_3}]{\substack{(i) \ HBr, \text{ peroxide} \\ (ii) \ Mg}}$

In the following reaction sequence, the amount of $D$ (in $g$) formed from $10$ moles of acetophenone is. . . . . . (Atomic weights in $g \ mol^{-1}: H = 1, C = 12, N = 14, O = 16, Br = 80$. The yield (%) corresponding to the product in each step is given in the parenthesis)

Select the option in which the incorrect major product is shown.