FPSC Everyday Science MCQs

Pascal's law states that pressure applied to a confined fluid is transmitted equally.
This allows force multiplication in hydraulic brakes.

Water exerts an upward buoyant force on immersed objects.
Floating occurs when this force balances the object's weight.

Archimedes' principle relates buoyant force to displaced fluid.
The upward force equals the weight of the displaced fluid.

Average speed is total distance divided by total time.
Thus, 120 ÷ 2 = 60 km/h.

A ship contains large air-filled spaces.
Its total mass spread over its volume gives an average density below water.

Gravity attracts masses toward one another.
Near Earth, it pulls objects toward the ground.

Density compares mass with the space occupied.
It is calculated as mass divided by volume.

Gravity continuously accelerates the ball downward.
After slowing to a stop, it begins falling.

Ice has an open crystal structure that occupies more volume.
Its lower density causes it to float on water.

Friction resists sliding or rolling between surfaces.
It can produce heat and slow moving objects.

Freezing expands water into a less dense solid structure.
The resulting ice is buoyant in liquid water.

Grooves help tyres maintain contact with the road.
They also channel water away and reduce skidding.