JEE Advanced · Chemistry · 25. Alcohols, Phenols & Ethers

The number of hydroxyl group(s) in Q is

Verified Solution

Answer & Solution

Correct Answer

(B) 4

Step-by-step Solution

Detailed explanation

Apply the relevant identity from the chapter and substitute the values established in the previous step, keeping the original constraint in view.

Use the simplified expression to isolate the unknown, then plug the result back into the question setup to confirm the working is internally consistent.

Cross-check against a boundary or limiting case. Both the dimensional balance and the qualitative behaviour at the extreme should agree with the candidate answer.

Combine the steps above to identify the correct option. The remaining choices each fail at least one of the consistency, dimensional, or boundary checks.

Same subject

The total number of distinct naturally occurring amino acids obtained by complete acidic hydrolysis of the peptide shown below is

JEE Advanced 2014 Medium
Upon heating with $C u_{2} S$ , the reagent(s) that give copper metal is/are

JEE Advanced 2014 Medium
Addition of excess aqueous ammonia to a pink coloured aqueous solution of $M C l_{2} . 6 H_{2} O (X)$ and $N H_{4} C l$ gives an octahedral complex Y in the presence of air. In aqueous solution, complex Y behaves as 1 : 3 electrolyte. The reaction of X with excess HCl at room temperature results in the formation of a blue coloured complex Z. The calculated spin only magnetic moment of X and Z is 3.87 B.M., whereas it is zero for complex Y.
Among the following options, which statement(s) is(are) correct ?

JEE Advanced 2017 Medium
$\mathrm{Ag}^{+}+\mathrm{NH}_3 \rightleftharpoons\left[\mathrm{Ag}\left(\mathrm{NH}_3\right)\right]^{+} ; k_1=3.5 \times 10^{-3}$ $\left[\mathrm{Ag}\left(\mathrm{NH}_3\right)\right]^{+}+\mathrm{NH}_3 \rightleftharpoons\left[\mathrm{Ag}\left(\mathrm{NH}_3\right)_2\right]^{+} ; k_2$ $=1.7 \times 10^{-3}$ then the formation constant of $\left[\mathrm{Ag}\left(\mathrm{NH}_3\right)_2\right]^{+}$is

JEE Advanced 2006 Medium
The value of $n$ in the molecular formula $\mathrm{Be}_n \mathrm{Al}_2 \mathrm{Si}_6 \mathrm{O}_{18}$ is

JEE Advanced 2010 Easy
One mole of an ideal gas is taken from $a$ to $b$ along two paths denoted by the solid and the dashed lines as shown in the graph below. If the work done along the solid line path is $W_s$ and that along the dotted line path is $W_d$, then the integer closest to the ratio $\frac{W_d}{W_s}$ is

JEE Advanced 2010 Hard

Explore more questions on app

From JEE Advanced

Let $x \in R$ and let $P = [\begin{matrix} 1 & 1 & 1 \\ 0 & 2 & 2 \\ 0 & 0 & 3 \end{matrix}], Q = [\begin{matrix} 2 & x & x \\ 0 & 4 & 0 \\ x & x & 6 \end{matrix}]$ and $R = P Q P^{- 1} .$
Then which of the following options is/are correct?

JEE Advanced 2019 Hard
A large spherical mass $M$ is fixed at one position and two identical point masses $m$ are kept on a line passing through the centre of $M$ (see figure). The point masses are connected by a rigid massless rod of length $l$ and this assembly is free to move along the line connecting them. All three masses interact only through their mutual gravitational interaction. When the point mass nearer to $M$ is at a distance $r = 3 l$ from $M$ , the tension in the rod is zero for $m = k (\frac{M}{288})$ . The value of $k$ is

JEE Advanced 2015 Medium
Among $B_{2} H_{6}, B_{3} N_{3} H_{6}, N_{2} O, N_{2} O_{4}, H_{2} S_{2} O_{3}$ and $H_{2} S_{2} O_{8},$ the number of molecules containing covalent bond between two atoms of the same kind is __________

JEE Advanced 2019 Medium
Let the eccentricity of the hyperbola $\frac{x^2}{a^2}-\frac{y^2}{b^2}=1$ be reciprocal to that of the ellipse $x^2+4 y^2=4$. If the hyperbola passes through a focus of the ellipse, then

JEE Advanced 2011 Medium
An electric dipole with dipole moment $\frac{p_{0}}{\sqrt{2}} (\hat{i} + \hat{j})$ is held fixed at the origin $O$ in the presence of an uniform electric field of magnitude $E_{0} .$ If the potential is constant on a circle of radius $R$ centered at the origin as shown in figure, then the correct statement(s) is/are:
( $ε_{0}$ is permittivity of free space, $R > >$ dipole size)

JEE Advanced 2019 Hard
Paragraph:
A small spherical monoatomic ideal gas bubble $\left(\gamma=\frac{5}{3}\right)$ is trapped inside a liquid of density $\rho_1$ (see figure). Assume that the bubble does not exchange any heat with the liquid. The bubble contains $n$ moles of gas. The temperature of the gas when the bubble is at the bottom is $T_0$, the height of the liquid is $H$ and the atmospheric pressure is $p_0$ (Neglect surface tension).

Question:
As the bubble moves upwards, besides the buoyancy force the following forces are acting on it.

JEE Advanced 2008 Medium

Explore more questions on app