How are colloidal solutions of gold prepared by different colours?

Which of the following is not an example of lyophilic colloids?

Which of the following statements is not true with respect to chemisorption?

Which of the following forces is involved in physical adsorption?

Which of the following colloids is most stable?

Which of the following statement about emulsions is true?

Which of the following statements regarding emulsions is false?

Which of the following diseases is cured using colloidal antimony?