Questions

Semiconductors are the basic materials used in the present solid state electronic devices like diode, transistor, ICs, etc. 2. Lattice structure and the atomic structure of constituent elements decide whether a particular material will be insulator, metal or semiconductor. Semiconductors are elemental (Si, Ge) as well as compound (GaAs, CdS, etc.). Silicon, Germanium, Gallium Arsenide are semiconductors, but Quartz is an insulator.

Being positive is important because often a person’s attitude to their work can come across in their writing and presentation. 

Example ::

An admin plays an important role in ensuring that diaries are properly managed and that all outgoing correspondence is well written and all incoming correspondence is read and delivered to the relevant managers quickly. Administrators sometimes provide the first impression a customer has of a business, so a positive and professional outlook is needed at all times.