Questions

The word assurance means ‘guarantee’. So the Quality Assurance Group’s role is to guarantee that the product is of high quality. They examine the overall s/w development process and their responsibility is to create and enforce standards and methods to improve it with the goal of preventing bugs from ever occurring.

Light Year is related to Distance. It is the unit of Distance.

It is about 9.5 Trillion Kms or 5.9 Trillion miles.

• It is the distance that light travels in vaccum in one julian year i.e, 365.25 days.

Sound waves cannot travel through a Vacuum.

A vacuum is an area without any air, like space. So sound cannot travel through space because there is no matter for the vibrations to work in.

IRQ-0 is the system timer commonly use in all computers. In a computer, IRQ is an interrupt request which acts as a hardware signal sent to the processor that temporarily stops a running program and allows a special program, an interrupt handler, to run instead.

The repeating units that are used to form the helical DNA structure are called nucleotides.

Yes, Carbon disulfide is prepared by heating sulfur and charcoal. 

S2 + C ----> CS2