Explanation

 Surface tension acts like a "skin" on the water, pulling the molecules at the surface inwards, which naturally leads to a spherical shape as it minimizes the surface area

Explanation

Alunar eclipse can only occur during a full moon.

A lunar eclipse happens when the Earth is positioned between the Sun and the Moon, casting a shadow on the Moon. This can only happen when the Sun, Earth, and Moon are in a very close alignment, which is called a syzygy

Explanation

The lachrymal gland, also known as the tear gland.

It is responsible for secreting tears in the human body.

It is located above the outer corner of each eye.

It helps keep the eyes moist and protected.

Explanation

Geology is the scientific study of the Earth's physical structure, composition, and processes.

Geology focuses on the Earth's crust, including its rocky parts, and explores its formation, transformation, and historical development.

Explanation

The human brain weighs approximately about 1.4 kilograms or 1400 in gram

and makes up about 2% of the human body weight.

The brain is divided into three regions -

Forebrain,

midbrain, 

hindbrain.

Explanation

Plastic is a synthetic material made from polymers.

It primarily derived from petrochemicals.

Plastic is entirely man-made.

It is widely used due to its versatility and durability.

Explanation

A hygrometer is an instrument used to measure the moisture content or humidity level in the air.

It often used in weather forecasting and environmental studies.

Explanation

• Males: 18 inches (45 cm)
• Females: 17 inches (43 cm)

• Cylindrical bundle of nerves.
• Extends from the brain through the backbone.

Function:

• Relays information between the brain and body.
• Part of the central nervous system (with the brain).

Explanation

Tetanus is caused by the bacterium Clostridium tetani.

The other options are caused by different pathogens:

• Malaria is caused by a parasite (Plasmodium) transmitted through mosquito bites.
• Cancer is not caused by bacteria; it is a group of diseases involving abnormal cell growth.
• Rabies is caused by a virus (Rabies virus), not bacteria.

Explanation