Match List-I with List-II: List-I
- (A) Aniline from aniline-water mixture: This is typically done using steam distillation (IV).
- (B) Glycerol from spent-lye in soap industry: This is done using fractional distillation (II).
- (C) Different fractions of crude oil: This is done using distillation at reduced pressure (III).
- (D) Chloroform-Aniline mixture: This is separated using simple distillation (I).
Thus, the correct answer is (2).
The correct increasing order of stability of the complexes based on \( \Delta \) value is:
List I (Molecule) | List II (Number and types of bond/s between two carbon atoms) | ||
A. | ethane | I. | one σ-bond and two π-bonds |
B. | ethene | II. | two π-bonds |
C. | carbon molecule, C2 | III. | one σ-bonds |
D. | ethyne | IV. | one σ-bond and one π-bond |
Let one focus of the hyperbola $ \frac{x^2}{a^2} - \frac{y^2}{b^2} = 1 $ be at $ (\sqrt{10}, 0) $, and the corresponding directrix be $ x = \frac{\sqrt{10}}{2} $. If $ e $ and $ l $ are the eccentricity and the latus rectum respectively, then $ 9(e^2 + l) $ is equal to:
The largest $ n \in \mathbb{N} $ such that $ 3^n $ divides 50! is: