Prepare for NEET Chemistry Hydrogen with MCQs & PYQs on NEET.GUIDE. Get free practice, previous year questions, and expert solutions to understand hydrogen’s unique properties.
A metal hydride crystallizes in a face-centered cubic lattice with hydrogen atoms occupying tetrahedral voids. If the edge length of the unit cell is 'a', what is the distance between two nearest hydrogen atoms?
a/2
a/√2
a/4
√3a/4
Which of the following isotopic combinations of dihydrogen exhibits the largest rotational constant?
H₂
HD
D₂
T₂
The spin isomers of hydrogen differ significantly in their:
energy states and properties
chemical reactivity
molecular weight
bonding types
The rate of diffusion of hydrogen gas is approximately how many times faster than that of oxygen gas under identical conditions?
16
8
4
2
Which property of hydrogen is responsible for its ability to act as both an oxidizing and reducing agent?
Low ionization energy
Small size
Intermediate electronegativity
High electron affinity
Which of the following statements about metallic hydrides is INCORRECT?
Metallic hydrides can be formed from transition metals.
Metallic hydrides can conduct electricity.
All metallic hydrides are ionic compounds.
Metallic hydrides can absorb hydrogen gas.
The high surface tension of water is primarily due to:
Hydrogen bonding between water molecules
Van der Waals forces between water molecules
Covalent bonding between water molecules
Ionic interactions between water molecules
The anomalous expansion of water refers to its:
Increase in volume upon cooling from 4°C to 0°C
Decrease in volume upon heating from 0°C to 4°C
Higher density in liquid state compared to solid state
Lower boiling point compared to other similar molecules
Which property of water contributes significantly to its high specific heat capacity?
Low molecular weight
Bent molecular geometry
Extensive hydrogen bonding network
Presence of lone pairs on oxygen
The boiling point of water is unusually high compared to other hydrides of group 16 elements. This is primarily attributed to:
Larger size of the oxygen atom
Higher electronegativity of oxygen
Strong intermolecular hydrogen bonding
Bent molecular geometry of water
