CSS MCQs

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.

Parallel branches have the same potential difference.
Switching off one appliance does not stop current in the others.

An electric motor uses magnetic forces on current-carrying conductors.
It converts electrical energy into motion.

A generator uses electromagnetic induction.
Mechanical motion produces electrical energy.

Lightning tends to strike exposed high points and conductors.
Safer shelter is inside a substantial building or closed vehicle.

An element contains atoms with the same number of protons.
It cannot be broken into simpler substances by ordinary chemical means.

A compound contains different elements chemically bonded together.
Its properties differ from those of its constituent elements.

Mixture components retain many of their own properties.
They can often be separated by physical methods.

Both spoons may have the same temperature.
Metal removes heat from the skin more quickly, creating a colder sensation.

A plane mirror forms a virtual image behind the mirror.
The image is upright, same-sized, and left-right reversed.