Questions

No work done as there is no external external pressure in free expansion. 

Hence, Work done in a free expansion process is Zero.

The annual plan control is one of the four types of marketing control system. Annual plan control is essential in order to determine whether all the marketing efforts undertaken by the organisation has been really worthwhile or not. It aims to achieve sales volume,profits and all those objectives which have been set up in the beginning of the year. In an organisation,the top management and middle level management are responsible for the annual plan control. They have to keep a check on the activities undertaken to implement the plans.

Shillong is the capital city of Meghalaya state in India. It is well known tourist place as a hill station in northeast India which attracts tourists all over the world.

Monopotassium tartarate was used in baking powder.

The ability of two or more substances to combine to form other substances is called Reactivity.

Application of temperature changes in the atmosphere is in adiabatics, or temperature change which are caused by compressing or allowing air to expand.