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Community shelf Community shelf -> Don't give up -> Go to message
This Post 30 points    (Olaaa!! Perrrfect answer.   in 6 votes )   [?]
2 replies   
Here is a good story which i thought i need to share with the community

Don't Give Up!
  by: Author Unknown, Source Unknown

There was this museum laid with beautiful marble tiles, with a huge marble statue displayed in the middle of the lobby. Many people came from all over the world just to admire this beautiful marble statue.
One night, the marble tiles started talking to the marble statue. Marble tile: "Marble statue, it's just not fair, it's just not fair! why does everybody from all over the world come all the way here just to step on me while admiring you? Not fair!".
Marble statue: "My dear friend, marble tile. Do you still remember that we were actually from the same cave?"
Marble tile: "Yeah! That's why I feel it is even more unfair. We were born from the same cave and yet we receive different treatment now. Not fair!" he cried again.
Marble statue: "Then, do you still remember the day when the designer tried to work on you, but you resisted the tools?"
Marble tile: "Yes, of course I remember. I hate that guy! How could he use those tools on me, it hurt so badly.".
Marble statue: "That's right! He couldn't work on you at all as you resisted being worked on."
Marble tile: "So???"
Marble statue: "When he decided to give up on you and start working on me instead, I knew at once that I would be something different after his efforts. I did not resist his tools, instead I bore all the painful tools he used on me.."
Marble tile: "Mmmmmm......."
Marble statue: "My friend, there is a price to everything in life. Since you decided to give up half way, you can't blame anybody who steps on you now."



Catalogs Catalogs -> Question Banks -> numerical problems in chemistry -> Go to message
This Post 105 points    (19 Olaaa!! Perrrfect answer.   bad job dude!! I dont approve of this answer!  in 34 votes )   [?]
11 replies   
it is a perfect book to workout different types of problems for various competetive
exams
Catalogs Discussion Forums -> Physical Chemistry -> pseudo reactions -> Go to message
This Post 0 points    (Olaaa!! Perrrfect answer.   in 0 votes )   [?]
1 replies   
i have this basic doubt from the ncert chemistry part1.please do clear it up!!

Qn :hydrolysis of methy acetate in aqueous soln. has been studied by titrating the liberated acetic acid against NaOH. the concentrationof ester at different times is gn
below
 
 t/min         0       30      60       90  

C/mol/L   .8500  .8004  .7538 .7096

Show that it follows a pseudo first order reaction, as the concentration of water remains nearly constant(55mol/L), during the course of the reaction what is the value of k' in this equation?

Rate=k'[CH3COOCH3][H2O]

Solution:
         For pseudo first order reaction , the reaction should be first order with respect to ester when H2O is constant. the rate constant k for the pseudo first order reaction is

k=2.303/t *logCo/C

where k=k'[H2O]


    t/min              C/mol/L             k/mol/L        ( i understand only till this part of 
      0                   .8500                  -                  the solution)
     30                  .8004             2.004*10^ -3
     60                  .7538             2.002*10^ -3
     90                  .7096             2.005*10^ -3

                                            
it can be seen that k[H2O] is constant and equal to 2.004*10^ -3 per min
and hence, it is pseudo first order reaction. we  can now determine k from
  k[H2O]= 2.004*10^ -3
  k[55 mol/L]= 2.004*10^ -3
  k=3.64* 10^ -5 per mole litre pre min
 
i  can't understand the soln. kindly sort it out.



     

Community shelf Community shelf -> KEEP SMILIMG -> Go to message
This Post 0 points    (Olaaa!! Perrrfect answer.   in 0 votes )   [?]
11 replies   
nice one
Catalogs Discussion Forums -> Electricity -> post office box -> Go to message
This Post 0 points    (Olaaa!! Perrrfect answer.   in 0 votes )   [?]
2 replies   
sry guys i got the ans
Catalogs Discussion Forums -> Electricity -> post office box -> Go to message
This Post 0 points    (Olaaa!! Perrrfect answer.   in 0 votes )   [?]
2 replies   
can you please explain the diagram and the solution for the post office box sum from the previous iit jee qn. paper
Community shelf Community shelf -> UFO -> Go to message
This Post 5 points    (Olaaa!! Perrrfect answer.   in 1 votes )   [?]
3 replies   

 
UFO's and ET's - A Myth? 
The wake-up call for the world that we were being visited, perhaps studied, by beings that were not of this earth began on July 8, 1947, when a disc-shaped UFO racing across New Mexico skies took a downward plunge and slammed into the desert near the city of Roswell. In spite of eyewitness accounts of a strange metal with unearthly symbols that wouldn't bend, and autopsies on alien bodies at a local funeral home, the U.S. government felt that the people would be better served not knowing the truth, and went into a disinformation campaign, saying the UFO was really a weather balloon. They would later come out with a top secret UFO project code named Blue Book.
Flying objects are mentioned 37 times in the Bible, to quote one: Ezekiel 1:16. "This was the appearance of the wheels. They sparkled like chrysolite, and all four looked alike. Each appeared to be made like a wheel intersecting a wheel." However, it was still the Roswell UFO incident that put the entire world on alert. UFO's were starting to be seen everywhere. In the UK , the UFO X-files have been opened to the public. Triangular shaped objects are being seen worldwide, and the U.S. is currently experiencing waves of them. These objects seem to prefer hovering over large cities. The next question, of course, is: what do they want? Hopefully they haven't found earthlings to be an excellent food source.
One of the earliest U.S. abductions was reported by Betty and Barney Hill. In September of 1961, they were driving home in New Hampshire when they noticed they were being followed by a UFO. They heard a strange noise, and woke up hours later, thirty-five miles farther south than they had been. Under the care of a Boston psychiatrist they were hypnotized. The stories they told of their abductions were amazingly similar. They were taken aboard a UFO  where they were placed on tables. Aliens took hair samples, fingernail samples, and stuck long needles into their bodies. Their case drew national media attention. Once the story hit the front pages, many came forward with accounts of their own abductions. Some said they were in bed when the abduction occurred. Many of these accounts turned out to be outright lies, but many others proved to be unexplainable. However, there is little doubt any more that we are being visited by something from another world.
In North America there have been thousands of cattle mutilations. People have reported seeing black helicopters and UFO's in the area where mutilations have occurred. These are not the kind of mutilations that would be caused by another animal, or even a man. The animal's body has been drained completely of blood, yet there isn't a drop of blood on the ground around the carcass. Their organs have been surgically removed by what appears to be a laser beam. Usually the reproductive organs and the rectums of the animals are taken. Some of these animals have been marked with a fluorescent paint-like substance. Authorities think this is done so they can be identified in the dark. Linda Moulton Howe is the world's greatest authority on cattle mutilations and has written a book on the subject: "An Alien Harvest."
Crop circles appearing around the world may offer additional proof of an alien presence. There are but two kinds of crop circles:
1. The one made by frauds.
2. The ones made by an unknown force. The differences are vast. In real crop circles, common electrical instruments, such as cell phones and cameras, work poorly, or not at all, in spite of the fact that they work perfectly outside the circle. There are also abnormal radiation readings. Some think that this is caused by UFO propulsion. The best evidence, though, comes from genetic mutation. The crop stem cells carry this mutation. When they are replanted in other ground, they grow much faster and produce taller plants. They also produce much healthier plants. Try that with a man-made crop circle! Some crop circles have appeared on nights when it was pouring and the ground was nothing but mud. Many feel that crop circles are one way in which aliens are trying to send us messages. Many have seen UFO's in areas, at about the same time, that crop circles appeared.
UFO's of all shapes and sizes are appearing all over the world every day of the week. They have been photographed with high speed cameras, had movies made of them, showed up on radar screens that were both on the ground and aboard aircraft. There are thousands of people from all walks of life, airline pilots, police officers, teachers, doctors, scientists, nurses, etc. who have reported not only seeing UFO's, but of being abducted by them. Can all of these people be lying? Look up at the sky some star-splattered night. To think we're alone is arrogant, if we are, that's one heck of a waist of space.



 
 
 

 
 

 
 
 


 
 
 


 
 
 


 
 
 


 
 
 


 
 
 

 
 



 
 
 


 
 
 

 
 


 
 
 








Community shelf Community shelf -> Oldest -> Go to message
This Post 10 points    (Olaaa!! Perrrfect answer.   in 2 votes )   [?]
1 replies   







Oldest primitive fish

http://www3.nationalgeographic.com/animals/images/primary/coelacanth-swimming.jpg


Oldest animal in the earth



http://www.tribuneindia.com/2006/20060402/spectrum/nature.jpg




Community shelf Community shelf -> inspiring "movie" -> Go to message
This Post 15 points    (Olaaa!! Perrrfect answer.   in 3 votes )   [?]
3 replies   
check out thess links . they are  good .

http://www.natureofsuccessmovie.com/



http://www.212movie.com/


http://www.the-race-movie.com/



after seeing if you found this useful . do rate.
Community shelf Community shelf -> cute pictures -> Go to message
This Post 22 points    (Olaaa!! Perrrfect answer.   in 5 votes )   [?]
7 replies   
http://www.petafoo.com/files/images/funny-kittens.preview.jpg


http://yoke.cc/0funny10.jpg


http://myrtus.typepad.com/photos/uncategorized/armyranger.jpg



http://www.funnyanimalpictures.net/data/media/1/card_playing_squirrel.jpg

http://yunasville.com/PhotoBlog/albums/FunnyAnimal/FunnyAnimal10.sized.jpg


http://www.animaltalk.us/images/uploads/image00911.jpg


http://p.vtourist.com/2372685-Travel_Picture-cbs5Kissy_Kissy.jpg




http://www.all4humor.com/images/files/Tiger%20Hug.jpg



Community shelf Community shelf -> To achieve your dream,this shouid be your ABC -> Go to message
This Post 0 points    (Olaaa!! Perrrfect answer.   in 0 votes )   [?]
14 replies   
awesome !!!
Catalogs Discussion Forums -> Integral Calculus -> integration doubts -> Go to message
This Post 0 points    (Olaaa!! Perrrfect answer.   in 0 votes )   [?]
3 replies   
[ ][ ]derivative of Dr / (Dr)^2 = 1 / Dr   + c

is this correct??

Can we solve integ. problems involoving Dr. using the UV rule??
Community shelf Community shelf -> A REAL STUDENT -> Go to message
This Post 0 points    (Olaaa!! Perrrfect answer.   in 0 votes )   [?]
4 replies   
superb
Community shelf Community shelf -> age of universe part-2 according to greatttttt vedas -> Go to message
This Post 0 points    (Olaaa!! Perrrfect answer.   in 0 votes )   [?]
10 replies   
simply superb.
Catalogs Discussion Forums -> Integral Calculus -> preference -> Go to message
This Post 0 points    (Olaaa!! Perrrfect answer.   in 0 votes )   [?]
5 replies   
[ ][ ]sin^3x.cos^5x dx

 in this sum , if we use ILATE rule which should we give preferencefor sin or cos??
 
 
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