CAT (VARC) PYQs

There are two kinds of molecules used to make some nano-robots: one that reacts positively to water and the other negatively.

Nano-Sentinel-like robots are likely to be used to inject people to convert them into robots, cell by cell.

Some hydro gels turn sticky when an electric current is passed through them; this potentially has very useful applications.

Robots made from smart materials are likely to become part of our everyday lives in the future