Hydrogen bonding occurs when a hydrogen atom is bonded to a highly electronegative atom like oxygen or nitrogen.

Hydrogen bonds occur between hydrogen and highly electronegative atoms like oxygen, nitrogen, or fluorine.

Hydrogen gas is colorless and highly flammable.

Intrinsic semiconductors have conductivity that is highly dependent on temperature, as they have no impurities.

Ionic compounds typically have high melting points due to strong electrostatic forces between ions.

Ionic solids are characterized by high melting points due to the strong electrostatic forces between the ions.

Irrational numbers are characterized by their non-repeating, non-terminating decimal expansion, distinguishing them from rational numbers.

Isomers have the same molecular formula but different structural or spatial arrangements.

Isotopes have the same number of protons but different numbers of neutrons.

The ability to evolve is a characteristic of life, allowing organisms to adapt to their environment over generations.

Linearly polarized light vibrates in a single plane, as opposed to unpolarized light which vibrates in multiple planes.

Lipids are characterized by their insolubility in water due to their hydrophobic nature.

Living organisms can evolve over time, which is a fundamental characteristic of life.

Meristematic tissue is characterized by its ability to divide and give rise to various types of plant tissues.

Multilayer adsorption is described by the BET theory, which accounts for the formation of multiple layers of adsorbate on the adsorbent.

Noble gases have a complete valence shell, making them largely unreactive.

Noble metals, such as gold and platinum, are known for their resistance to corrosion and oxidation.

Non-Newtonian fluids exhibit a change in viscosity with the rate of shear applied.

Nuclear fusion releases energy, requires high temperatures, and occurs in stars, making all options correct.

Nuclear reactions involve large energy changes due to the conversion of mass into energy, unlike chemical reactions.

A common rule for checking divisibility by 7 is to double the last digit and subtract it from the rest of the number; if the result is divisible by 7, then the original number is also divisible by 7.

Optical isomers, or enantiomers, rotate plane-polarized light in opposite directions.

Organic compounds are primarily characterized by the presence of carbon atoms in their structure.

Overdamped systems return to equilibrium slowly without oscillating, as the damping is strong.

P-block elements exhibit varied oxidation states due to their ability to lose or gain electrons.

P-type semiconductors have an excess of holes as majority charge carriers.

Pathogenic microbes are those that can cause diseases in humans, animals, or plants.

Phototropism is the growth of a plant towards light, facilitated by auxins.

Probiotics are beneficial bacteria that promote gut health and are often found in fermented foods.

Prokaryotic cells have circular DNA and lack membrane-bound organelles.