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What is the function of concentrated hydrochloric acid in flame test?


Mysterious Chemistry celebrates it first birthday on December 15, 2012

Mysterious Chemistry celebrates it first birthday on December 15, 2012

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Tuesday 28 February 2012

Little Mosquito Army

I am taking you to a battlefield. An adventorous journey. Are you ready? Now you are in a special vehicle designed by MCB(MYSTERIOUS CHEMISTRY BLOG). Be atomst cautious. Our enemies are not so silly ones. Oh i forgot to say who our opponents are. Its none other than the mosquitoes,' Little Mosquito Army'. Attack is the best defence. We are going to attack our aspersors. Get ready with your weapons. Before that all of you should apply an oinment which contain the chemical DEET(N,N-diethyl-meta-toluamide). DEET is very efficient against mosquitoes. Lactic acid, CO2 and Octenol emitted by human body help mosquitoes to find their target. Most modern chemical sensors of little mos. army will detect the presence of these chemicals. Fruity or floral fragrance( esters) can also make their task easier. Our disastrous weapon DEET can confuse their chemical sensors. Lactic acid emission from your body can be controlled to an extent by avoiding high pottasium content foods.( i think salty and crispy food items are rich in pottasium). Oh God ...!!! Hey Jack, What the hell are you doing there? Dont light the candle since it will emit CO2.. OK OK..Thats all we can do.. Now their chemical sensors are under our jurisdiction.. Still we cant quit.. There are two more sensors to deactivate. Their thermal and visual sensors.I dont think that we can abash their thermal sensors, because we cant change our body temperature. Now visual sensors!! If there is someone wearing bright and dazzling clothes ,just kick him out..Do you know the simple but amazing principle behind their visual sensors?. "SOMETHING THAT IS MOVING HAVE BLOOD IN IT" .So dont make unnecessary movments. Comparing to their 'hi tech' sensors our weapons are so weak.. Using their chemical sensors they can focus their prey which is thirty metre away. No doubt our best weapon is DEET. Thanks to US Army. It was US Army who devoloped DEET during the time of second world war.Oooooops! Whats that, two mosquitoes are coming. What to do? I should like to say ' NO' to chemical methods in this critical stage. See what i am going to do. I am going to impart a higher momentum on them using my hands(given initial velocity greater than 3*10^8 m/s.) Its dead .it was a 100% physical method, all the three sensors of our little mos. got destructed:-D.. MISSION SUCCESS!!

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