Q1: A CMOS IC operating from a 3-volt supply will consume ________.

ANS:A - less power than a TTL IC

I'm not sure about how much volt it ll consume but its definetly less than that of TTL opponent because CMOS circuits are less likely to produce power supply transients when switching between states. The transition level between high and low logic states is usually half the supply voltage, which means CMOS has superior noise immunity to TTL.