I take this great opportunity to express my gratitude to the dignities that have been instrumental in the successful completion of this project .As a student of class XII, I had to do investigatory project as a part of my studies. I have completed my project under the guidance of my subject teachers, I express my high gratitude and sincere thanks to for constant encouragement, immense motivation and trust worthy guidance at all the stages of this project. Next I would like to thanks Mr. ARUN MISHRA,lab attendant for his sincere help in completion of project in time .Now it is time to thanks my special friends who helped me to bring out the best of me , without their vital help this project would not have been in present form.

Last but not the least I wish to avail myself this

opportunity to express a sense of gratitude and love to my beloved parents for their manual support, strength ,help and for everything I got from them

UTKARSH MISHRA

XII A

KV OLD CANTT ALLD

ACKNOWLEDGEMENT