It is not. The phone currently doesn't support CDMA. It runs on the GSM standard.
Since the Nexus S, Google brought out the Galaxy Nexus, Nexus 4, and Nexus 5.
Google, with a collaboration with manufacturer LG.
The Nexus 4 is on backorder at the Google Play store as of 11/30/12 but you can find it at amazon or on ebay. Squidoo keeps track of the prices, see related link
Yes. Both the iPhone 4 and iPhone 4S work on Verizon's network. However, you will need to buy the version of the 4 or 4S that is compatible with Verizon.
You could conceivably use the Tracfone service because they utilize multiple carrier networks, which includes AT&T and T-Mobile, which the Nexus 4 is compatible with.
It's unlikely. If and when the Nexus 5 comes out, the remaining supplies of Nexus 4's will be sold out to make way for the next generation device.
I believe the Nexus 4 decbuted in India on May 2013, selling on the Indian online merchant Flipkart.
It is not possible, due to the fact that AT&T is a type of network called GSM. It is not compatible with Verizon, a CDMA network.
It was likely built in South Korea, as LG is based there.
The Nexus 4 has been discontinued. It can be purchased used for around 100 USD.
Released in November 2012, the Nexus 4 is Google's latest pure-Android powered smartphone. It has been lauded for its low pricepoint compared to other unlocked phones, its specs, and ease of software updates (no restrictions from a carrier or manufacturer).
The 7 in Google Nexus 7 has not been openly mentioned to stand for anything. However, the recent Nexus tablet iterations (and to some degree, the phone as well) appear to refer to screen size. Both generations of the Nexus 7 have 7 inch and 7.02 inch screens respectively. The Nexus 10 has a 10.1 inch screen. The Nexus 4 has a 4.7 inch screen. The rumored Nexus 5 is supposed to have a 5 inch (or larger) screen.