Questions

Nuclear power energy source generates radioactive waste.

Thyroxin or Thyroxine is the thyroid hormone that regulates carbohydrate metabolism in the human body.

Coagulation is a chemical process that involves neutralization of charge. Coagulation during water treatment is designed to remove particles suspended in water.

The term 'degrees of newness' is associated with degree of design change. How much the design changes that much newness comes in it.

The strength of an electromagnet can be increased by increasing the cross-sectional area, increasing the number of turns, increasing current supply, increasing the length of the coiled wire.

It is also the land that accommodates the imports of the port.

The Quality Factor is also defined, as Q. So it is a number, which reflects the lossness of a circuit. higher the Q, the lower are the losses.

the quality factor is measurement of efficiency (or effectiveness) of a device or circuitry. In literal sense quality factor means qualitative performance of a device.

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

Hence,  alphabet Y is a question.