Question

The right option for the statement “Tyndall effect is exhibited by”, is

• A. Urea solution
• B. NaCl solution
• C. Glucose solution
• D. Starch solution

Answer 1

The Correct Option is C

The given question pertains to the Tyndall effect, which is a phenomenon in physics and chemistry. Let's understand what the Tyndall effect is and determine which option correctly exhibits this phenomenon.

The Tyndall effect refers to the scattering of light by particles in a medium. It is most commonly observed when a beam of light passes through a colloidal solution. The key here is that the particles in a colloid are large enough to scatter light, but in true solutions, the particles are too small to cause scattering.

Now, let's consider each option:

• Urea solution - Urea dissolves in water to form a true solution. The particles are molecularly sized and do not scatter light, so the Tyndall effect is not exhibited.
• NaCl solution - Sodium chloride in water forms a true ionic solution. The ions do not scatter light as their size is too small, hence it does not exhibit the Tyndall effect.
• Glucose solution - Similar to the previous options, glucose dissolves in water also to form a true molecular solution without scattering light.
• Starch solution - This is a colloidal solution. Starch does not dissolve in water to form a clear solution; instead, it stays as microscopic particles that scatter light.

Based on the explanation above, the Tyndall effect is correctly exhibited by a starch solution, not the glucose solution. Therefore, there seems to be a mistake in the given options and correct answer as noted:

• Correct Option: Starch solution

In summary, only the starch solution among the given options can exhibit the Tyndall effect because of its colloidal nature.