Explanation

An electroscope detects the presence and type of electric charge on a body.

It shows whether the charge is positive or negative by the movement of its leaves.

Explanation

Femto (f) is a prefix in the metric system that represents 10⁻¹⁵ (one quadrillionth).

It is commonly used in physics and chemistry, such as femtoseconds (fs) = 10⁻¹⁵ seconds.

Explanation

When milk reacts with acid, casein proteins clump together forming long chains called milk fibre.

These fibres can be used to create fabrics and bioplastics.

Explanation

Sesamoid bones are extremely small bones found in within muscles or tendons (e.g., the kneecap or patella).

They protect tendons from stress and wear.

Explanation

Diphtheria is a bacterial infection caused by Corynebacterium diphtheriae.

It affects the respiratory system.

It can lead to serious complications if untreated.

Explanation

The limbic system is the part of the brain primarily involved in processing emotions and memory.

It includes structures like the amygdala and hippocampus that regulate emotional responses.

Explanation

Hepatitis is not a bacterial disease; it is caused by viruses (like Hepatitis A, B, C).

Tuberculosis and Pneumonia (in many cases) are caused by bacteria.

Explanation

Explanation

• Isotopes of an element have the same atomic number (number of protons).
• It means they have the same chemical properties and are considered the same element.

Explanation

A circuit is a closed path through which electrons (electric current) flow.

It typically includes components like resistors, batteries, and wires, allowing controlled movement of current.