Question

v) তলৰ কোনটোৱে ‘
টিণ্ডেল প্রভাৱ’ দেখুৱায়
(Which of the following shows 'Tyndal effect'-)
a) লৱনৰ দ্ৰৱ (Salt Solution)
b) গাখীৰ (Milk)
c) কপাৰ ছালফেটৰ দ্ৰৱণ (Copper Sulphate Solution) d) ষ্টার্চ দ্ৰৱন (Starch Solution)​

Answer 1

The Solutions that shows Tyndall Effect is (b) Milk and (d) Starch Solution.

Explanation:

• The Tyndall effect, also known as the Tyndall phenomenon, is the scattering of a light beam by a medium containing microscopic suspended particles, such as in a colloid solution, smoke or dust in a room which causes a light beam entering a window to become visible.
• Milk is a colloid of microscopic liquid butterfat globules dispersed and suspended in water which are not visible to the naked eye which can easily showcase tyndall effect.
• Starch Solution is also a colloid which too makes the path of light ray visible when passed through it.

Hence, The Solutions that shows Tyndall Effect is (b) Milk and (d) Starch Solution.