Which one of the following statements is corr | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(B) $1$. $As_2S_3$ is a negatively charged sol,not positively charged. So,option $A$ is incorrect.$2$. For the Tyndall effect to be observed,the refra

Vedclass · Accepted Answer

The refractive indices of the dispersed phase and the dispersion medium differ greatly in magnitude to observe the Tyndall effect.

Vedclass · Answer

(B) $1$. $As_2S_3$ is a negatively charged sol,not positively charged. So,option $A$ is incorrect.$2$. For the Tyndall effect to be observed,the refractive indices of the dispersed phase and the dispersion medium must differ significantly in magnitude. This is a correct statement.$3$. An ultramicroscope is used to detect the presence of colloidal particles,but it does not provide information about their size and shape. So,option $C$ is incorrect.$4$. The colour of gold sol depends on the size of the particles. The finest gold sol is red in colour,while coarser sols appear purple or blue. So,option $D$ is incorrect.

Which one of the following statements is correct?

Similar Questions

Which of the following is the best protective colloid?

Which of the following is not a colloid?

Gold number of a lyophilic sol is such a property that:

The rule that states that the greater the valency of the flocculating ion,the greater is its coagulating power,was proposed by whom?

Which one is an example of a gel?

Vedclass Test Series

Exam Paper Generator

Online Exam Module