Explanation

• Pressure is a fundamental physical quantity that is defined as the force exerted per unit area.
• It is a measure of the strength of a force acting on a surface.
• It is typically measured in units such as Pascals (Pa) or pounds per square inch (PSI).

Last verified on 10-02-2026

Explanation

In inverse proportion, when one quantity increases, the other decreases in the same ratio.

Their product remains constant: x × y = constant.

Last verified on 09-02-2026

Explanation

Rock salt is also known as halite.

It is the mineral form of sodium chloride (NaCl)

It is commonly used for de-icing roads and as table salt in cooking.

Explanation

Explanation

World War I was a global war originating in Europe 

This war lasted from 28 July 1914 to 11 November 1918.

Explanation

• Carbon dioxide (CO2) is a major greenhouse gas.
• It responsible for about 65% of the Earth's greenhouse effect.

Explanation

اسم معرفہ: یہ وہ اسم ہوتا ہے جو کسی مخصوص شخص، جگہ یا چیز کو ظاہر کرتا ہے۔

اس کی چار اقسام ہیں:

اسم علم: جو کسی خاص شخص یا جگہ کے نام کے طور پر استعمال ہوتا ہے (مثلاً: پاکستان، احمد)۔

اسم ضمیر: جو کسی شخص یا چیز کی جگہ ضمیر کے طور پر استعمال ہوتا ہے (مثلاً: وہ، یہ)۔

اسم اشارہ: جو کسی مخصوص چیز یا شخص کی طرف اشارہ کرتا ہے (مثلاً: یہ، وہ)۔

اسم موصول: جو کسی جملے کے ساتھ مل کر مکمل معنی فراہم کرتا ہے (مثلاً: جو، جس)۔

Explanation

Explanation

Entomology is the study of insects and their relationship to humans, the environment, and other organisms.

while

Zoology is the study of all animals.

Biology is a natural science concerned with the study of life and living organisms.

Etymology investigates and documents the lives.

Explanation

Article 25-A of the Constitution of Pakistan obligates the state to provide free and compulsory education to children aged 5 to 16 years.

This article ensures that every child has access to education as a fundamental right.