"Don’t drink water while studying because chemistry says that concentration decreases on adding water” is a saying that has been printed on many images. The joke is that “concentration” to a student means to direct attention, but in chemistry, “concentration” is about dilution.

“Don’t drink water while studying because due to dilution, ‘Concentration decreases’..!!! #Justsaying” was posted on Twitter by desihitler on April 24, 2010. “Don’t drink water while studying ....bcoz concentration decreases on adding water.....don’t take it seriously it just a joke..........” was posted on Twitter by Swapnil Khopkar 🇮🇳 on January 14, 2011. “Don’t drink water while studying, bcoz, Chemistry says—CONCENTRATION decreases on adding water” was posted on Twitter by drôle/cómico/Huájī on March 19, 2011.

The 2010 and 2011 tweets are mostly from India. The saying possibly originated on an image.

The joke is potentially dangerous if taken seriously. If someone studies without drinking something, that person could become ill.


Twitter
desihitler
@desihitler
Don’t drink water while studying because due to dilution, “Concentration decreases”..!!! #Justsaying
10:08 AM · Apr 24, 2010·Twitter Web Client

Twitter
Not you.
@not_scientist
try red bull ..ul b out with flyin colors RT
@arshpreet_k:  “Dont drink water while studying” .due to dilution CONCENTRATION decreases
2:22 PM · May 19, 2010·TweetDeck

Twitter
neelesh patil
@iNeelesh
chemistry PJ of 2010-
“Dont drink water while studyin”
coz
“concentration” decreases due 2 dilution...!!!
2:52 AM · Jul 11, 2010·SmsTweets

Twitter
NIRMAL MUTHA
@NIRMAL_MUTHA
Greatest chemistry PJ of 2010.
“Dont drink water while studying”
Because
“concentration” decreases due to dilution.
4:19 AM · Jul 15, 2010·SmsTweets

twitter
Tejendra singh daila
@Khurafati_Teju
hello guys never drink water in examination hall..................coz concentration decreases due to dilution........
4:02 AM · Jul 18, 2010·Twitter Web Client

Twitter
Vivek Arya
@romeomustlivee
Dont drink water while studying
.
.
Bcoz
.
CONCENTRATION decreases by adding water #PEEJAY
6:18 AM · Dec 13, 2010·Dabr

Twitter
Swapnil Khopkar 🇮🇳
@777swapnil777
don’t drink water while studying ....bcoz concentration decreases on adding water.....don’t take it seriously it just a joke..........
10:25 AM · Jan 14, 2011·Twitter Web Client

Twitter
drôle/cómico/Huájī
@superb__tweets
Don’t drink water while studying, bcoz, Chemistry says-- CONCENTRATION decreases on adding water. #superb__tweets
1:30 PM · Mar 19, 2011·Echofon

Twitter
Surya KY
@SuryaSquared
Don’t drink water while studying, bcoz, Chemistry says-- CONCENTRATION decreases on adding water.
12:34 AM · Mar 20, 2011·Twitter Web Client

Twitter
bhavesh malick
@bhvmalick
Don’t drink water while studying…
because chemistry says: “concentration decreases on adding water”!!!
7:40 AM · May 12, 2011·Twitter Web Client

Twitter
Bob Kostic
@causticbob
Don’t drink water while studying, Scientists say concentration decreases when you add water.
5:22 PM · Sep 28, 2014·Twitter Web Client

The New Indian Express
A Play on Words
Published: 30th May 2016 06:00 AM | Last Updated: 01st June 2016 11:41 AM | A+A A-
By Dr Albert P’ Rayan
A friend of mine whatsapped me this humorous instruction: “Don’t drink water while studying because chemistry says that concentration decreases on adding water.” I enjoyed the pun on the word concentration and whatsapped the same to some of my friends

Twitter
R.i.s.h.u
@Rish__u
Don’t drink water while studying becoz chemistry says that concentration decreases on adding water.”
12:59 AM · Jul 30, 2016·Twitter for Android

Twitter
memory
@_a_reminisce
Don’t drink water while studying,
because chemistry says that
‘’Concentration decreases on adding water.’’😂😂😂
5:07 AM · Jun 1, 2018·Twitter for Android

Les Listes
Top 100 Funny Science Jokes and Science Puns
Posted on July 24, 2018
(...)
#14.
Don’t drink water while studying…
Chemistry states that concentration decreases upon adding water.

Facebook
RVCE Confessions : WTF
May 4, 2019 ·
Don’t drink water while studying because chemistry says that concentration decreases on adding water!😂

Twitter
Vincent ♤
@vincentcg_
Why should you not drink water while studying chemistry?
Because as amount of water increases concentration decreases.
12:06 PM · Jan 21, 2020·Twitter for Android

Reddit—3amjokes
Posted by u/potato_patataa July 28, 2021
Why you should not drink water while studying?
Because it will dilute your concentration