is pushed upward forcefully

pedal stroke becomes longer

transmits slight kickback to the driver's foot

all of the above

water in the master cylinder

air in the hydraulic system

failure of the primary or secondary circuit of hydraulic system

power brake failure

Ineffectiveness of the brakes

Judder during braking

Localized wearing of the brake pads

Rapid wearing of the brake pads

prevent rust from growing on the body

improve its external appearance

retain the characteristics of steel for long

all of these

optimises the viscosity of paint

makes paint film hard

gives colour and filling up effect to the paint

none of the above