An electric motor operates on the principle of electromagnetism, converting electrical energy into mechanical energy.

H2 has a bond order of 1, calculated as (2 bonding electrons - 0 antibonding electrons)/2 = 1.

N2 has the highest bond order of 3, while O2 has a bond order of 2 and F2 has a bond order of 1.

A pandemic is classified as a biological disaster, as it involves the spread of infectious diseases affecting large populations.

The Great Mississippi Flood of 1927 prompted the establishment of FEMA to improve disaster response and recovery efforts.

Malaria is caused by protozoan parasites of the genus Plasmodium.

Type 1 Diabetes is characterized by the autoimmune destruction of insulin-producing beta cells in the pancreas.

Measles is characterized by a distinctive rash along with other symptoms.

The Constitution of Athens, attributed to Cleisthenes, is often considered the first written constitution in the world, establishing a framework for governance in ancient Athens.

Chlorine is a non-metal, while the others are metals.

Elephant is a herbivore, while the others are carnivores.

Circle is a shape, while the others are colors.

The Renaissance is a cultural movement, while the other three options are significant historical events related to wars and economic crises.

Sunflower is a plant, while the others are planets.

'Ecosystem' refers to a biological community, while the others are technological concepts.

Sunflower is a plant, while the others are planets.

All options are perfect squares except 1 which is not a square of a whole number.

Both Bacteria and Archaea are domains that include primarily unicellular and prokaryotic organisms.

Both Bacteria and Archaea are domains that include prokaryotic organisms, which lack a nucleus.

Tropical rainforests have the highest biodiversity among ecosystems due to their warm climate and abundant rainfall.

Tropical rainforests are known for their high biodiversity due to favorable climatic conditions.

Tropical rainforests are known for having the highest biodiversity among ecosystems.

Neodymium (Nd) is a lanthanide element, while the others belong to different series.

Sodium (Na) can act as a reducing agent as it can donate electrons.

All of the listed elements can form coordinate bonds by donating a lone pair of electrons.

Tin can form a stable +4 oxidation state.

Nitrogen can form a triple bond, as seen in N2, where three pairs of electrons are shared between the two nitrogen atoms.

Carbon can form multiple bonds (double and triple bonds) due to its ability to hybridize and share electrons.

Lead does not form a stable +4 oxidation state; it is more stable in the +2 state.

Lead does not form a stable oxide in the same way as the other elements listed.