1.What defect creates when some P atom is added to Si?
2.Due to which reason O2 gas is librated from blood of tissues of animals? [partial pressure of oxygen gas is MORE or LESS in tissues]
3. Which comounds are obtained by sandmayer reaction? [phenol, aniline, chlorobenzene or benzyl chloride]
4. The potential of electrochemical cell is dependent on which factor mass of electrode or nature of electrode?
5. identify X and Z in reaction 
X gives Y when heated in presence of Zn dust and then Y gives Z on alkylation with Propene

Asked by Dhriti | 24th Oct, 2014, 12:23: PM

Expert Answer:

Dear annaya4ever@outlook.com

Thanks for asking us a question in Ask the Expert section of TopperLearning.com.

We cannot entertain  5 questions in a single query. In case of multiple questions within a query, please post each question individually and let us know where you are getting stuck so that we would be able to explain things better.
Answer to your first query is given below:
1.What defect creates when some P atom is added to Si?

In the processing of Si crystals for microelectronics, a very small concentration of phosphorus atoms is added to silicon.

Such additions create defects in the arrangement of atoms in silicon that impart special electrical properties to different parts of the silicon crystal.

This in turn allows us to make useful devices such as transistors which are the building blocks that have enabled computers and the information technology revolution.



Topperlearning Team.

Answered by Arvind Diwale | 25th Oct, 2014, 04:02: PM