| List-I(Mixture) | List-II(Purification Process) |
| (A) Chloroform & Aniline | (I) Steam distillation |
| (B) Benzoic acid & Napthalene | (II) Sublimation |
| (C) Water & Aniline | (III) Distillation |
| (D) Napthalene & Sodium chloride | (IV) Crystallisation |
The correct answer is (D):
The correct match is
(A) Chloroform & Aniline → (III) Simple distillation
(B) Benzoic acid & Napthalene → (IV) Crystallisation (Sublimation is not used as both sublime heating)
(C) Water & Aniline → (I) Steam distillation
(D) Napthalene & Sodium chloride → (II) Sublimation (only naphthalene has the tendency for sublimation)


A substance 'X' (1.5 g) dissolved in 150 g of a solvent 'Y' (molar mass = 300 g mol$^{-1}$) led to an elevation of the boiling point by 0.5 K. The relative lowering in the vapour pressure of the solvent 'Y' is $____________ \(\times 10^{-2}\). (nearest integer)
[Given : $K_{b}$ of the solvent = 5.0 K kg mol$^{-1}$]
Assume the solution to be dilute and no association or dissociation of X takes place in solution.
Inductance of a coil with \(10^4\) turns is \(10\,\text{mH}\) and it is connected to a DC source of \(10\,\text{V}\) with internal resistance \(10\,\Omega\). The energy density in the inductor when the current reaches \( \left(\frac{1}{e}\right) \) of its maximum value is \[ \alpha \pi \times \frac{1}{e^2}\ \text{J m}^{-3}. \] The value of \( \alpha \) is _________.
\[ (\mu_0 = 4\pi \times 10^{-7}\ \text{TmA}^{-1}) \]
Organic Chemistry is a subset of chemistry dealing with compounds of carbon. Therefore, we can say that Organic chemistry is the chemistry of carbon compounds and is 200-225 years old. Carbon forms bond with itself to form long chains of hydrocarbons, e.g.CH4, methane and CH3-CH3 ethane. Carbon has the ability to form carbon-carbon bonds quite elaborately. Polymers like polyethylene is a linear chain where hundreds of CH2 are linked together.
Read Also: Organic Compounds
Organic chemistry is applicable in a variety of areas including-