Explanation

Zingiber officinale is the scientific name for ginger.

It is a commonly used spice and medicinal root.

It belongs to the Zingiberaceae family and grows as an underground stem (rhizome).

Explanation

The average weight of an adult human brain is about 1300 to 1400 grams.

It makes up around 2% of the total body weight but consumes about 20% of the body's energy.

Explanation

A mirage occurs when light bends due to varying air temperatures, causing total internal reflection.

This makes distant objects appear as if they are reflected in water, commonly seen in deserts.

Explanation

Veins carry blood toward the heart.

They have valves to prevent the backward flow of blood due to low pressure, especially in the limbs.

Arteries do not have valves (except at the heart).

Capillaries are too small and thin to have valves.

Explanation

According to Coulomb's Law, the force between two charges is inversely proportional to the square of the distance between them.

If the distance is halved, the force becomes four times stronger.

Explanation

The SI unit of pressure is Pascal (represented as Pa) 

in SI base units, one kilogram per meter per second squared (N/m2 or kg m-1s-2)

Definition of Pressure: Pressure can be defined as the force acting per unit area.

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The SI unit of energy/work is the joule (J)

Explanation

Heat of reaction refers to the amount of heat released or absorbed during a chemical reaction.

If heat is released, the reaction is exothermic; if absorbed, it's endothermic.

Explanation

Young's Modulus is the ratio of stress to strain and measures stiffness of a material.

Since stress is measured in N/m² (or Nm⁻²) and strain is dimensionless, the unit remains Nm⁻².

Explanation

Mercury is the only metal that is liquid at room temperature, unlike the others (Copper, Brass, Aluminum, Silver, Titanium, Platinum) which are solid.

It remains in liquid form due to its low melting point of about -38.83°C.

Explanation

Vitamin D helps the body absorb calcium from the intestines.

It regulates blood calcium levels by enhancing calcium absorption and reducing calcium loss from bones.