Hydrogen Bonding MCQs

Hydrogen Bonding MCQs

Hydrogen forms a unique type of bond known as a “hydrogen bond.” This bond is commonly found in structures of molecules that include hydrogen atoms, such as organic compounds and water. Hydrogen bonds are a special kind of intermolecular force that occurs between molecules. They form when hydrogen is bonded to highly electronegative elements like fluorine (F), oxygen (O), or nitrogen (N). These elements attract electrons strongly, leaving the hydrogen atom effectively exposed on the side opposite the bond. Although hydrogen bonds are stronger than other intermolecular attractions, they are still much weaker compared to ionic or covalent bonds.

Out of the two allotropic forms of dihydrogen, the form with lesser molecular energy is

(a) ortho
(b) meta
(c) para
(d) All have the same energy

Which one of the following is not an isotope of hydrogen?

(a) Deuterium
(b) Tritium
(c) Ortho hydrogen
(d) None of these

Which is true about different forms of hydrogen?

(a) ortho hydrogen has the same spins of two nuclei clockwise or anticlockwise
(b) para hydrogen has different spins of two nuclei
(c) At absolute zero temperature, there is a 100% para form and at high temperature, there is 75% ortho form
(d) all are correct

The metal which does not react with cold water but evolves H₂ with steam is

(a) Na
(b) K
(c) Pt
(d) Mg

Non-stoichiometric hydrides are produced by

(a) palladium, vanadium
(b) manganese, lithium
(c) nitrogen, fluorine
(d) carbon, nickel

Hydrogen can behave as a metal

(a) at very high temperature
(b) at very low temperature
(c) at very high pressure
(d) at very low pressure

The reagent commonly used to determine the hardness of water titrimetrically is

(a) oxalic acid
(b) sodium thiosulphate
(c) sodium citrate
(d) disodium salt of EDTA

Hydrogen will not reduce

(a) heated cupric oxide
(b) heated ferric oxide
(c) heated stannic oxide
(d) heated aluminium oxide

When two ice cubes are pressed over each other, they unite to form one cube. Which of the following forces is responsible for holding them together?

(a) hydrogen bond formation
(b) van der Waals forces
(c) covalent attraction
(d) ionic interaction

The boiling point of water is exceptionally high because

(a) there is a covalent bond between H and O
(b) water molecule is linear
(c) water molecules associate due to hydrogen bonding
(d) water molecules are not linear