Q52 of 252 Page 81

Which of the following is not an emulsion?

Shaving cream is , whereas face cream, milk and butter are emulsions.

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50

How would you prepare a saturated solution of sodium chloride in water at 25°C? What will happen if this solution is cooled to 10°C?

 51

One of the following is a solid foam. This one is:

 53

One of the following does not show Tyndall effect. This one is :

 54

Which one of the following is most likely to exhibit Tyndall effect?