MCQ
Structure of the compound whose $IUPAC$ name is ${3-}$Ethyl$-{2-}$hydroxy${-4}-$methylhex$-{3-}$en$- 5-$ynoic acid is
- A

- B

- C

- ✓







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| Element | Atomic mass |
| $A$ | $12.01$ |
| $B$ | $35.5$ |
$A$ and $B$ combine to form new substance $X$ . If $4\,moles$ of $B$ combine with $1\,mole$ of $A$ to give $1\,mole$ of $X,$ then weight of one mole of $X$ is ........... $\mathrm{g}$