Determine the pH of different soil sample 12th class bio practical
HTML-код
- Опубликовано: 18 сен 2024
- Procedure
(i) Weigh 10 g of the soil sample A. Add 50 mL of distilled water to soil
sample to make a soil solution.
(ii) Filter the soil solution through a filter paper and collect the filtrate in a
beaker. Label it as soil solution -A.
(iii) Take a clean dry porcelain cavity tile. Place 5 drops of soil solution A
in three cavities of the tile
(iv) To the 5 drops of soil solution present in one cavity add 5 drops of
universal pH indicator solution. Note the colour developed and compare
it with the colour chart given on the universal pH indicator
solution bottle.
(v) To the soil solution present in the second cavity, dip a small strip of broad
range pH indicator paper (pH 2-11). Note the colour and compare with
the colour chart given on the broad range indicator paper and get a rough
estimate of pH of the sample solution.
(vi) Choose a suitable narrow range pH indicator paper (for e.g. If the pH of
soil is determined by you as 8.0, choose a narrow range 7.0 to 9.0) and
dip a small strip of it in the soil solution present in the third cavity. Note
the colour developed and determine the pH to the nearest possible value
with the help of the colour chart.
Repeat the same steps for determining the pH of sample B and C. Follow the
same procedure for water samples collected from different sites.
Discussion
Based on the pH values obtained, categorise the samples into acidic, basic,
neutral type.
Record the plant species present in the site from which the samples are collected.
Note for teachers: The colour developed should be noted against direct sun
light. Also, sometimes the soil solution colour may interfere with the readings.
Thus one has to be careful while making the observations.
All main video.12th bio.
12th bio all practical
1- • To study Pollen tube g...
2 - • To calculate percentag...
3 - • To study of reproducti...
4 - • To study the t.s of ma...
5 - • Study of stages of mei...
6 - • Identify Common Diseas...
7 - • identify various stage...
8 - • Mitosis in onion root ...
9 - • Determine the water ho...
10 - • Determine the pH of di...
All main practical here
Subscribe karna na bhule
Aao dhamal karte he lab me ..
Everything is temporary but jugaad is permanent😂😂
Just kidding..thank you sir this helped us a lot ❤
😂😂😂😂
Sandar प्रैक्टिकल लेक्चर
My dear sir
Thank u sir....and plz upload the vedio very fast as possible as you can do bcz from 14 our pratical is going to start
Ho jayega..dont waorry
@@LetMeExplainnowbharatpanwar ok sir....you are the best .🤩..school is very lucky having pratical teacher like you ...we need teacher like you only ....🤩🤩🤩🤩🤩🤩🤩🤩🤩🤩🤩🤩🤩🤩🤩🤩🤩🤩🤩🤩🤩🤩🤩🤩🤩🤩🤩🤩
Sir now only one day is left to having board pratical...so do fast
🙏🙏🙏🙏🙏🙏
@@karanrathod9440 main main aa gye aapko konsa pahle karna bta do.jisme dikat ho rhi he
Thank you sir this was very simple and interesting
Great Job ...👍
Thank you sir you helped me a lot
Sir kal mera bio practical hai....
Pls Mendel upload kar dijiye dono experiment
mera bhi
Aj sam ko ho jayega
@@LetMeExplainnowbharatpanwarpls sir as fast as possible...
Sir you are god.🙏
Thank you!!
Very Thank you sir
Thanks bhaiya
Thank you sir 😊
Fabulous
YOU ARE THE GREATEST TEACHER IN THE WORLD 🌎 ❤️
Sir filter paper hame provide karenge school se ya phir hame purches karna hei ??
Keyur Dumraliya filter paper will be provided from the school.
Thanks for suggestion
School se milega dear
thanku so much sir
Bro what's up with Godzilla screaming in the background
Independent law of assortment practical upload kijye gldiiiij
Sir wo ph value ko app bol deta toh achha hota🥲
its distill or simple drinking water
Universal indicator ka kyun use karte hai
Sir SPM practical upload kijye galdi.....
Spm konsa. Dear.semi permeable membrane wala.. Ya other
@@LetMeExplainnowbharatpanwar yes sir Wahi...
What is the red water that u put it
Universal indicator
Practical exam hai humhra 16 feb 20 ko board ka gseb