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A good drill is important for use on concrete walls, but the bit you use can be just as necessary. A hammer drill with bit that has a carbide or diamond tip would be a good recommendation, remember that using goggles is vital because of the concrete dust.
Super glue doesn't work well on concrete. It's much more suited to use on smooth non-permeable surfaces.
That's sort of a strange question. A concrete slab is a horizontal surface -- it's meant to be a surface you stand on or build things on. Concrete blocks are usually used for vertical surfaces -- walls. I believe that poured concrete walls are more expensive than concrete block walls. You wouldn't use concrete blocks as a substitute for a concrete slab.
Carpet glue by its nature is extremely sticky as it is made to keep a rug from moving. If you need to get the glue off of a concrete floor you can use a floor grinder. You can also scrape it.
Many 'adhesives' can be removed from concrete. Different ways for different compounds, use the remover that suits the glue.