Explanation

Tuberculosis is an infectious disease transmitted through the air when an infected person coughs, sneezes, or talks.

Explanation

Origin of species using Natural Selection was the work of Charles Darwin.

It was published on 24 November 1859,

..

Charles Darwin's discoveries included.

four different species of giant ground sloth (some of the largest land mammals ever to have lived), a gomphothere,

and the remains of an extinct horse.

ND16-8-2023

Explanation

Iron is galvanized by coating it with zinc.

It prevents rusting and corrosion by acting as a protective barrier.

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

The theory of relativity usually encompasses two interrelated theories by Albert Einstein:

special relativity and general relativity, proposed and published in 1905 and 1915

E =mc2

 C in this equation Velocity of light

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Principle of Theory of relativity

ND27122022

Explanation

• Herbivores are animals that eat only plants, including leaves, stems, roots, flowers, fruits, and seeds.
• Examples of herbivores include cows, deer, rabbits, and elephants.

Explanation

Biogas is produced under anaerobic conditions; the process is denominated as anaerobic digestion.

The major constituent of biogas is methane (55-70%), CO2 (30-45%) and some traces of gases such as H2S and ammonia.

Explanation

The periodic table, also known as the periodic table of elements, is an organized arrangement of chemical elements into rows (periods) and columns (groups).

The periodic table shows trends in element properties, such as:

• Metallic character: Increases down a group and from right to left across a period.
• Nonmetallic character: Increases from the bottom left to the top right of the table.

Explanation

Cyclones are usually accompanied by high rainfall.

heavy showers mean: A period of heavy rain

Cyclones mean  ایک قسم کی طوفان

heavy showers  زیادہ بارش/  بھاری بارش

ND16-3-2023

Explanation

Hydrogenation is the process by which hydrogen is used in the preparation of banaspati ghee from vegetable oil

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ND16-12-2022