Questions

The Story telling or The narrative form of paintings were the early examples of art photography which were often imitated.

Gamma rays has the shortest wavelength and radio waves has the longest wavelength.

Thermoset, or thermosetting, plastics are synthetic materials that strengthen during being heated, but cannot be successfully remouldedor reheated after their initial heat-forming. This contrasts withthermoplastics, which soften when heated and harden and strengthen after cooling. Thermoplastics can be heated, shaped and cooled as often as necessary without causing a chemical change, while thermosetting plastics will burn when heated after the initial moulding.

Head Quaters of FAO is located in Rome

It is the transfer of sufficient amount of the state of process from one machine to the target machine.

The alphabet 'Y' resembles same as the questioning word WHY in sounding.

Hence,  alphabet Y is a question.