JEE Mains · Chemistry · STD 11 - 8.2 Organic chemistry isomerism

The maximum number of RBr producing 2-methylbutane by above sequence of reactions is ________ - (Consider the structural isomers only)
- A 5
- B 4
- C 3
- D 1
Answer & Solution
Correct Answer
(B) 4
Step-by-step Solution
Detailed explanation
\(\mathrm{RBr} \xrightarrow[\text { dry Ether }]{\mathrm{Mg}} \mathrm{RMgBr} \xrightarrow{\mathrm{H}_2 \mathrm{O}} \mathrm{R}-\mathrm{H}\) Hence, RBr Can be
See the Complete Solution
Get step-by-step explanations for this and 2.5 Lakh+ more JEE, NEET & CET questions.
- Unlock all solutions
- Practice the full chapter
- Track accuracy across PYQs
4.8 rated on Google Play · 14,000+ reviews
More questions from Chemistry
- \(200\; mL\) of \(0.01\; M\; HCl\) is mixed with \(400 \;mL\) of \(0.01\; M\; H _{2} SO _{4}\). The \(pH\) of the mixture isJEE Mains 2022 Medium
- The elevation of boiling point of \(0.10\, m\) aqueous \(CrCl _{3}, xNH _{3}\) solution is two times that of \(0.05\, m\) aqueous \(CaCl _{2}\) solution. The value of \(x\) is......... [Assume \(100 \%\) ionisation of the complex and \(CaCl _{2},\) coordination number of \(Cr\) as \(6,\) and that all \(NH _{3}\) molecules are present inside the coordination sphere \(]\)JEE Mains 2020 Medium
- The number of stereoisomers formed in a reaction of \((\pm) Ph ( C = O ) C ( OH )( CN ) Ph\) with \(HCN\) is \(..........\)JEE Mains 2022 Medium
- The amount of sugar \((C_{12}H_{22}O_{11})\) required to prepare \(2\, L\) of its \(0.1\, M\) aqueous solution is ............... \(\mathrm{g}\)JEE Mains 2019 Hard
- Which of the following is NOT a physical or chemical characteristics of interstitial compounds?JEE Mains 2026 Easy
- The enthalpy of combustion of propane, graphite and dihydrogen at \(298\,K\) are: \(-2220.0\,kJ\,mol ^{-1}\), \(393.5\,kJ mol ^{-1}\) and \(-285.8\,kJ\,mol ^{-1}\) respectively. The magnitude enthalpy of formation of propane \(\left( C _{3} H _{8}\right)\) is......... \(kJ\,mol\,{ }^{-1}\). (Nearest integer)JEE Mains 2022 Medium
More PYQs from JEE Mains
- The \(\mathrm{Eu}^{2+}\) ion is a strong reducing agent in spite of its ground state electronic configuration (outermost) : [Atomic number of \(\mathrm{Eu}=63\) ]JEE Mains 2021 Easy
- A proton moving with a constant velocity passes through a region of space without any change in its velocity. If \(\vec{E}\) and \(\vec{B}\) represent the electric and magnetic fields respectively, then the region of space may have : (\(A\)) \(\mathrm{E}=0, \mathrm{~B}=0\) (\(B\)) \(\mathrm{E}=0, \mathrm{~B} \neq 0\) (\(C\)) \(\mathrm{E} \neq 0, \mathrm{~B}=0\) (\(D\)) \(\mathrm{E} \neq 0, \mathrm{~B} \neq 0\) Choose the most appropriate answer from the options given below :JEE Mains 2024 Hard
- The geometry of \(XeOF_4\) by \(VSEPR\) theory isJEE Mains 2015 Medium
- Let \(A =\left[\begin{array}{ll} a & b \\ c & d \end{array}\right]\) and \(B =\left[\begin{array}{l}\alpha \\ \beta\end{array}\right] \neq\left[\begin{array}{l}0 \\ 0\end{array}\right]\) such that
\(AB = B\) and \(a + d =2021,\) then the value of \(ad - bc\) is equal to ...... .JEE Mains 2021 Medium - In which pairs, the first ion is more stable than the second?
JEE Mains 2025 Hard - The de Broglie wavelength of an electron in the \(4^{th}\) Bohr orbit isJEE Mains 2020 Hard