Questions

Covalent bonds hold atoms together because the attraction between the positively charged nuclei and the negatively charged shared electrons is greater than the repulsions between the nuclei themselves.

A program is a group of related projects managed in a coordinated way to obtain benefits and  control  not available from managing them individually. Programs may include elements of related work outside of the scope of the discrete projects in the program.

For example:

A New car model program can be broken up into projects  for the design and upgrades of each major component (transmission, engine, interior, exterior) while the ongoing manufacturing occurs on the assembly line

False. MS-Word is not an Operating system.

Microsoft Word or MS-Word is an Application software developed by the company Microsoft. It allows users to Type and Save documents.

All the given reactions are Decomposition reactions.

Decomposition reaction is a reaction in which only one reactant is splitted into two or more products.