Q1: In an ac circuit, a capacitor and an output resistor are connected in series with an ac signal. What filter action will be the result?

ANS:C - high-pass

Here in the question it is not marked that output is taken from the Capacitor or Resistor,

If the output is taken from the capacitor then act as low pass filter (Resistor is connected nearer to the source) and If the output is taken from Resistor then circuit would act as high pass filter. (Capacitor is connected nearer to the source).