Page 15 - final Nai Udaan september 2024

Test for presence of starch and Protein

Steps to Test for the Presence of Starch:

Take a small portion of the food item to be
tested (e.g., a potato, bread, or rice). Put the
sample on a clean plate or in a test tube.
Add few drops of iodine solution to the
sample. If starch is present, the sample will
turn blue-black in color. If no starch is present,
the iodine will remain yellow or light
brown.
Steps to Test for the Presence of Protein:

Take a small portion of the food item (e.g., milk, egg white, or pulses). Put the sample in a
clean test tube. Add a few drops of sodium hydroxide (NaOH) solution to the test tube.
Next, add a few drops of copper sulfate (CuSO ) solution to the mixture. Gently shake the
test tube to mix the solutions well. If protein is present, the mixture will turn violet or
purple. If no protein is present, the solution will remain blue.

Some water tricks and amazing facts Water can defy gravity

Water can These hands-on approaches not only
travel up engage students but also help in simplifying
against gravity complex concepts, leading to better compre-
through hension and retention. Through interactive
capillary learning, students develop a deeper interest
action, as in science, making the learning experience
seen in plants both meaningful and fun.
and trees, To make my classroom teaching more
where it flows from roots to leaves like it’s effective, I implemented a variety of activities,
got an invisible elevator. Hot water freezes TLMs, and experiments.
faster than cold water: Known as the
Mpemba effect, under certain conditions, hot It was due to these dedicated efforts in
water can freeze faster than cold water. enhancing my teaching methods that I was
given the opportunity to participate in the
The use of TLM activities and experiments India International Science Festival.
makes science more enjoyable and easier to
understand. Additionally, I am deeply grateful to have
received the Delhi State Teachers Award in
2023, a recognition that I am truly honored
Nisha Sharma
Sunil Kumar
TGT Natural by.
Mahato
Science
GSKV No.2 C Blk
Yamuna vihar

-2024
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