FPSC Everyday Science MCQs

Complete combustion of carbon forms carbon dioxide.
Limited oxygen may instead produce carbon monoxide.

Sand particles are too large to pass through filter paper.
Water passes through as the filtrate.

Carbon monoxide competes with oxygen for hemoglobin.
This can deprive organs of oxygen without obvious warning.

Evaporation removes water as vapor.
The dissolved salt remains behind as crystals.

Carbon dioxide does not support combustion and is nonconductive.
It can displace oxygen around a fire.

Electric current measures charge passing a point per unit time.
Its SI unit is the ampere.

Electric current is measured in amperes.
An ampere equals one coulomb of charge per second.

Voltage represents energy transferred per unit charge.
It drives current through a circuit.

Resistance is measured in ohms.
It describes opposition to electric current.

Copper contains mobile electrons that carry current easily.
It is widely used in electrical wiring.

Plastic resists the movement of electric charge.
The covering protects users from electric shock.

A fuse melts when excessive current heats it.
This interrupts the circuit and helps prevent fire or damage.