Explanation

When water acts as the solvent in dissolving a substance, the process is called hydration.

It involves the attachment of water molecules to the ions or molecules of the solute.

Explanation

A kilowatt-hour (unit symbol: kW⋅h or kW h; commonly written as kWh) is a non-SI unit of energy

equal to 3.6 megajoules (MJ) in SI units

.Kilowatt-hours are a common billing unit for electrical energy supplied by electric utilities.

Explanation

The ball shares the train’s horizontal velocity, so it moves forward with the train.

As a result, it comes back down into the thrower’s hand.

Explanation

Force is not a base quantity; it is calculated using base quantities (mass and acceleration).

It is a derived quantity because its SI unit (Newton) comes from kg·m/s².

Explanation

Reproductive Part of a Plant:

The flower is the part of the plant responsible for sexual reproduction.

It produces seeds (through pollination and fertilization) that grow into the next generation of plants.

Explanation

Explanation

The word “Islam” means “submission to the will of God.” 

The fundamental belief of Islam is “There is only one God, and Muhammad is his prophet.”

Explanation

Carolus Linnaeus developed the binomial nomenclature system for naming organisms.

Each species is given a two-part Latin name: Genus and Species (e.g., Homo sapiens).

Explanation

Thyroid Hormone Deficiency in Children:

In children, insufficient thyroid hormone (hypothyroidism) leads to cretinism, characterized by:

• Stunted physical growth (short stature).
• Delayed mental development (intellectual disability).

Explanation

Vascular Cryptogams:

Cryptogams are non-flowering, seedless plants (reproduce via spores).

Vascular cryptogams have a vascular system (xylem & phloem) but do not produce seeds or fruits.

Pteridophytes (e.g., ferns, horsetails) fit this description.