Questions

Hydroelectricity is electricity produced from hydropower i.e, water.

Cloud computing :: 

Cloud computing is an information technology (IT) paradigm that enables ubiquitous access to shared pools of configurable system resources and higher-level services that can be rapidly provisioned with minimal management effort, often over the Internet.

Server virtualization :

Server virtualization is a virtualization technique that involves partitioning a physical server into a number of small, virtual servers with the help of virtualization software. In server virtualization, each virtual server runs multiple operating system instances at the same time.

Server virtualization is more for a good reason. It offers the potential to dramatically save space and improve server efficiency. Vendors are in fierce competition to offer the most advanced tools that they hope will earn them the virtualization crown.

Hence, the given statement that 'Cloud computing uses Server virtualization.' is TRUE.

Flourine is the most electro negative element due to its small atomic radius .It also has the tendency to accept an electron to complete octet configuration

The letter 'X' resembles the same as the tool AXE in sounding.

Hence, the alphabet X is a tool.