JEE Mains · Chemistry · STD 11 - 9. Hydricarbon
Which of the following structures are aromatic in nature?

- A \(A, B, C\) and \(D\)
- B Only \(A\) and \(B\)
- C Only \(A\) and \(C\)
- D Only \(B, C\) and \(D\)
Answer & Solution
Correct Answer
(B) Only \(A\) and \(B\)
Step-by-step Solution
Detailed explanation
\(A , B\) aromatic \(C , D\) is nonaromatic
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
- For the decomposition of azomethane. \(CH _{3} N _{2} CH _{3}( g ) \rightarrow CH _{3} CH _{3}( g )+ N _{2}\) (g) a first order reaction, the variation in partial pressure with time at \(600\,K\) is given as
JEE Mains 2022 Medium - The rate of a certain biochemical reaction at physiological temperature \((T)\) occurs \(10^{6}\) times faster with enzyme than without. The change in the activation energy upon adding enzyme isJEE Mains 2020 Hard
-

For a given reaction \(\mathrm{R} \rightarrow \mathrm{P}, \mathrm{t}_{1 / 2}\) is related to \([\mathrm{A}]_0\) as given in table.
Given: \(\log 2=0.30\)
Which of the following is true?
A. The order of the reaction is \(1 / 2\).
B. If \([\mathrm{A}]_0\) is 1 M , then \(\mathrm{t}_{1 / 2}\) is \(200 \sqrt{10} \mathrm{~min}\)
C. The order of the reaction changes to 1 if the concentration of reactant changes from 0.100 M to 0.500 M .
D. \(\mathrm{t}_{1 / 2}\) is 800 min for \([\mathrm{A}]_0=1.6 \mathrm{M}\)
Choose the correct answer from the options given below:JEE Mains 2025 Medium - \(10\, mL\) of \(2\,(M)\, NaOH\) solution is added to \(200\, mL\) of \(0.5\, (M)\) of \(NaOH\) solution. What is the final concentration ?............. \(\mathrm{M}\)JEE Mains 2013 Medium
- The effect of addition of helium gas to the following reaction in equilibrium state, is : \(PCI _5( g ) \rightleftharpoons PCl _3( g )+ Cl _2( g )\)JEE Mains 2023 Medium
- For a metal ion, the calculated magnetic moment is \(4.90\,BM\). This metal ion has \(........\) number of unpaired electons.JEE Mains 2023 Medium
More PYQs from JEE Mains
- If the function \(f(x)=2 x^3-9 \mathrm{ax}^2+12 \mathrm{a}^2 \mathrm{x}+1\), where \(\mathrm{a} \gt 0\), attains its local maximum and local minimum values at \(p\) and \(q\), respectively, such that \(\mathrm{p}^2=\mathrm{q}\), then \(f(3)\) is equal to:JEE Mains 2025 Easy
- Let \(f\) be a differentiable function in the interval \((0, \infty)\) such that \(f(1)=1\) and \(\lim _{t \rightarrow x} \frac{t^2 f(x)-x^2 f(t)}{t-x}=1\) for each \(x>0\). Then \(2 f(2)+3 f(3)\) is equal to ....................JEE Mains 2024 Hard
- The number of elements in the set
\( S=\{x:x\in[0,100] \text{ and } \int_{0}^{x}t^{2}sin(x-t)dt=x^{2}\} \) is:JEE Mains 2026 Easy - Radiation coming from transition \(n = 2\) to \(n = 1\) of hydrogen atoms fall of \(He^+\) ions in \(n = 1\) and \(n = 2\) states. The possible. Transition of helium ions as they absorb energy from the radiation isJEE Mains 2019 Hard
- If the angles of elevation of the top of a tower from threecollinear points \(A, B\) and \(C\) on a line leading to the foot of the tower are \(30^o , 45^o \) and \(60^o \) respectively, then the ratio \(AB : BC\) is:JEE Mains 2015 Hard
- In two different experiments, an object of mass \(5\; kg\) moving with a speed of \(25\; ms ^{-1}\) hits two different walls and comes to rest within \((i)\) \(3\) second, \((ii)\) \(5\) seconds, respectively. Choose the correct option out of the following :JEE Mains 2022 Medium