Pakistan MCQs

Carbon dioxide is a major greenhouse gas released by fossil-fuel use.
It traps heat in Earth's climate system.

The Moon is Earth's only natural satellite.
It orbits Earth and influences ocean tides.

Recycling processes used materials into new products.
It can reduce waste and demand for raw resources.

Earth rotates on its axis approximately once every 24 hours.
The side facing the Sun experiences day.

Erosion removes and transports soil or rock.
Water, wind, ice, and gravity can cause it.

Earth's tilted axis changes the angle and duration of sunlight during its orbit.
This produces the seasons.

Force is measured in newtons in the SI system.
The unit is named after Isaac Newton.

Isaac Newton formulated three laws of motion and the law of universal gravitation.
His work shaped classical physics.

The joule is the SI unit of energy and work.
It is named after James Prescott Joule.

Albert Einstein developed special and general relativity.
These theories transformed modern physics.

Power is the rate of doing work or using energy.
Its SI unit is the watt.

Dmitri Mendeleev arranged elements in a periodic system.
He also predicted properties of undiscovered elements.