MCQ
The $IUPAC$ name of  (figure) is
  • A
    $3-$ Methylpent $-1-$ en $-4-$ al
  • $3-$ Methylpent $-4-$ enal
  • C
    $3-$ Methylpent $-4-$ carbaldehyde
  • D
    $3-$ Methyl $-5-$ oxopent $-1-$ ene

Answer

Correct option: B.
$3-$ Methylpent $-4-$ enal
b

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Similar questions

The safest and the most common alternative of sugar is
In comparison with alkali metals, the electron affinity of halogens is
Which among the following is not true for a cyclic process:
$\begin{array}{*{20}{c}}
  {IR - \mathop {\mathop O\limits^{ \bullet  \bullet } }\limits^ \oplus   - R'} \\ 
  | \\ 
  H 
\end{array} \to RI + R'OH$

true about this mechanism

If $20\,g $ of a solute was dissolved in $ 500\,ml$  of water and osmotic pressure of the solution was found to be $ 600\,mm$  of $Hg  $ at ${15\,^o}C,$ then molecular weight of the solute is
The rate determining step for the preparation of nitrobenzene from benzene is
$7\, gm$ of $N_2(g)$ at $27\,^oC$ is expanded reversibly and isothermally from intial  pressure of $0.5\, M\,\,Pa$  to a final pressure $0.1\, M\,Pa$. Determine approximate work done$ [ln\,\,5 = 1.6]$ .....$J$
The Lewis acid character of boron tri halides follows the order:
At $298\,K$, the standard reduction potential for $Cu ^{2+} / Cu$ electrode is $0.34\,V$.

Given : $K _{ sp } Cu ( OH )_2=1 \times 10^{-20}$

$\operatorname{Take} \frac{2.303 RT }{ F }=0.059 \,V$

The reduction potential at $pH =14$ for the above couple is $(-) x \times 10^{-2}\,V$. The value of $x$ is $........$.

The entropy versus temperature plot for phases $\alpha$ and $\beta$ at 1 bar pressure is given. $S_{\mathrm{T}}$ and $S_0$ are entropies of the phases at temperatures $\mathrm{T}$ and $0 \mathrm{~K}$, respectively.

(image)

The transition temperature for $\alpha$ to $\beta$ phase change is $600 \mathrm{~K}$ and $C_{p, \beta}-C_{p, \alpha}=1 \mathrm{~J} \mathrm{~mol}^{-1} \mathrm{~K}^{-1}$. Assume $\left(C_{p, \beta}-C_{p, \alpha}\right)$ is independent of temperature in the range of 200 to $700 \mathrm{~K} . \mathrm{C}_{p, \alpha}$ and $C_{p, \beta}$ are heat capacities of $\alpha$ and $\beta$ phases, respectively.

($1$)The value of entropy change, $\mathrm{S}_\beta-\mathrm{S}_\alpha$ (in $\mathrm{J} \mathrm{mol}^{-1} \mathrm{~K}^{-1}$ ), at $300 \mathrm{~K}$ is. . . . . . .

[Use : $\ln 2=0.69$  Given : $S_\beta-S_\alpha=0$ at $\left.0 \mathrm{~K}\right]$

($2$) The value of enthalpy change, $\mathrm{H}_\beta-\mathrm{H}_\alpha$ (in $J$ mol ${ }^{-1}$ ), at $300 \mathrm{~K}$ is

Give the answer quetion ($1$) and ($2$)