MCQ
How many methyl groups are present in $2, 5-$dimethyl$-4-$ethylheptane
- A$2$
- B$3$
- C$4$
- ✓$5$
✓
Answer
Correct option: D.
$5$
d
(d) $\mathop {H - \mathop {\mathop {\mathop {\mathop C\limits_{|7} }\limits_H }\limits^| }\limits^H - \mathop {\mathop {\mathop {\mathop C\limits_{|6} }\limits_H }\limits^| }\limits^H - \mathop {\mathop {\mathop {\mathop {C - }\limits_{|5\,\,\,\,} }\limits_{C{H_3}} }\limits^{|\,\,\,\,\,\,\,} }\limits^{H\,\,\,\,} \mathop {\mathop {\mathop {\mathop {C\,\, - \,}\limits_{|4\,\,\,\,} }\limits_{H\,\,\,} }\limits^{|\,\,\,\,\,\,\,} }\limits^{C{H_2}C{H_3}} \mathop {\mathop {\mathop {\mathop {C\,\, - \,}\limits_{|3} }\limits_H }\limits^{|\,\,\,} }\limits^H \mathop {\mathop {\mathop {\mathop {C\,\, - \,}\limits_{|2} }\limits_H }\limits^{|\,\,\,} }\limits^{C{H_3}} \mathop {\mathop {\mathop {\mathop C\limits_{1|} }\limits_H }\limits^| }\limits^H - H}\limits_{{\rm{\,2, 5 dimethyl 4 - ethyl\,heptane (5 \,Methyl \,group)}}} $
(d) $\mathop {H - \mathop {\mathop {\mathop {\mathop C\limits_{|7} }\limits_H }\limits^| }\limits^H - \mathop {\mathop {\mathop {\mathop C\limits_{|6} }\limits_H }\limits^| }\limits^H - \mathop {\mathop {\mathop {\mathop {C - }\limits_{|5\,\,\,\,} }\limits_{C{H_3}} }\limits^{|\,\,\,\,\,\,\,} }\limits^{H\,\,\,\,} \mathop {\mathop {\mathop {\mathop {C\,\, - \,}\limits_{|4\,\,\,\,} }\limits_{H\,\,\,} }\limits^{|\,\,\,\,\,\,\,} }\limits^{C{H_2}C{H_3}} \mathop {\mathop {\mathop {\mathop {C\,\, - \,}\limits_{|3} }\limits_H }\limits^{|\,\,\,} }\limits^H \mathop {\mathop {\mathop {\mathop {C\,\, - \,}\limits_{|2} }\limits_H }\limits^{|\,\,\,} }\limits^{C{H_3}} \mathop {\mathop {\mathop {\mathop C\limits_{1|} }\limits_H }\limits^| }\limits^H - H}\limits_{{\rm{\,2, 5 dimethyl 4 - ethyl\,heptane (5 \,Methyl \,group)}}} $
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
In $2^{nd}$ period which element has highest value of sum of $1^{st}$ & $2^{nd}\ I.E.$
→The compound $\begin{matrix}
C{{H}_{3\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,}} \\
|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\, \\
C{{H}_{3}}-C=CH-C{{H}_{3}} \\
\end{matrix}$ on reaction with $NaIO_4$ in the presence of $KMnO_4$ gives :-
→C{{H}_{3\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,}} \\
|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\, \\
C{{H}_{3}}-C=CH-C{{H}_{3}} \\
\end{matrix}$ on reaction with $NaIO_4$ in the presence of $KMnO_4$ gives :-
Some addition reactions of alkene are given below. Identify the one which fits on ALL the given criteria.
Reaction must have-
→Reaction must have-
$(A)$ Stereochemistry of addition - SYN ONLY
$(B)$ Regiochemistry of addition- ANTI-MARKOVNIKOV OR ANTI-MARKOVNIKOV LIKE
$KClO _3+6 FeSO _4+3 H _2 SO _4 \rightarrow KCl +3 Fe _2\left( SO _4\right)_3+3 H _2 O$ The above reaction was studied at $300\,K$ by monitoring the concentration of $FeSO _4$ in which initial concentration was $10\,M$ and after half an hour became $8.8\,M$. The rate of production of $Fe _2\left( SO _4\right)_3$ is $........\times 10^{-6}\,mol\,L ^{-1}\,s ^{-1}$.
→The possible number of optical isomers in ${[Co{(en)_2}C{l_2}]^ + }$ are
→Ammonia gas can be collected by the displacement of
Consider the following reaction
→Which response contains all the correct statement about this process ?
$(1)$ Dehydration $(2)\, E_2$ mechanism
$(3)$ Carbon skeleton migration $(4)$ Most stable alkene will form
$(5)$ Single-step reaction
Strength of hydrogen bond is intermediate between
In $Na_2 [Fe(CN)_5NO]$, sodium nitroprusside
→Find the incorrect match:
→| Compound | Geometry |
| (A) $BF _3$ | Trigonal planer |
| (B) $PCl _5$ | Trigonal bipyramidal |
| (C) $SF _6$ | Square planer |
| (D) $BeCl _2$ | Linear |