Questions

A computer software are of two types. They are :

1. System software

2. Application software

Systems software includes the operating system and all the utilities that enable the computer to function. 

Application software includes programs that do real work for users.

Hence, Operating system is an example of system software.

Mahavira

Plants are producers, which means they make their own food. Chloroplasts are organelles found in eukaryotic and plant cells that conduct photosynthesis. Chloroplasts absorb sunlight and use it in conjunction with water and carbon dioxide gas to produce food for the plant.

Plants use energy from sunlight to help make their food, but they need chloroplasts to do it.

Hence, in plants, chloroplasts are necessary for Photosynthesis.

Hypnosis is a state of human consciousness involving focused attention, reduced peripheral awareness, and an enhanced capacity to respond to suggestion.

We know that,

Weight W = mg. That is mass times gravitational force.

Anarchy means Absence of government.

Cast iron is a group of iron-carbon alloys with a carbon content greater than 2% and is a brittle material.

Its usefulness derives from its relatively low melting temperature.

Attribution theory was designed to account for how people explain others' behavior. It is a theory in psychology states that the attributions people make about events and behavior can be classed as either internal or external. In an internal, or dispositional, attribution, people infer that an event or a person's behavior is due to personal factors such as traits, abilities, or feelings.