(A) Generally, hydrogen bonding exists when H is covalently bonded to the highly electronegative atom like F, O, N.
(B) Intramolecular H bonding is present in
(C) Intermolecular Hydrogen bonding is present in HF.
(D) The magnitude of Hydrogen bonding in solid state is greater than in liquid state.
(E) Hydrogen bonding has a powerful effect on the structure and properties
of compounds like melting point, boiling point, density, etc.
Match List-I with List-II and select the correct option:
The bond angles \( b_1, b_2, b_3 \) in the above structure are respectively in \( ^\circ \):
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:
Let $ P_n = \alpha^n + \beta^n $, $ n \in \mathbb{N} $. If $ P_{10} = 123,\ P_9 = 76,\ P_8 = 47 $ and $ P_1 = 1 $, then the quadratic equation having roots $ \alpha $ and $ \frac{1}{\beta} $ is: