Which of the following is the best protective colloid?
- AGelatin (Gold No. $= 0.005$)
- BGum arabic (Gold No. $= 0.15$)
- CEgg albumin (Gold No. $= 0.08$)
- DNone of these
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Match List-$I$ with List-$II$.
List-$I$ (Colloid Preparation Method) List-$II$ (Chemical Reaction) $(a)$ Hydrolysis $(i) \; 2 AuCl_{3} + 3 HCHO + 3 H_{2}O \rightarrow 2 Au(sol) + 3 HCOOH + 6 HCl$ $(b)$ Reduction $(ii) \; As_{2}O_{3} + 3 H_{2}S \rightarrow As_{2}S_{3}(sol) + 3 H_{2}O$ $(c)$ Oxidation $(iii) \; SO_{2} + 2 H_{2}S \rightarrow 3 S(sol) + 2 H_{2}O$ $(d)$ Double Decomposition $(iv) \; FeCl_{3} + 3 H_{2}O \rightarrow Fe(OH)_{3}(sol) + 3 HCl$
Choose the most appropriate answer from the options given below.
| List-$I$ (Colloid Preparation Method) | List-$II$ (Chemical Reaction) |
| $(a)$ Hydrolysis | $(i) \; 2 AuCl_{3} + 3 HCHO + 3 H_{2}O \rightarrow 2 Au(sol) + 3 HCOOH + 6 HCl$ |
| $(b)$ Reduction | $(ii) \; As_{2}O_{3} + 3 H_{2}S \rightarrow As_{2}S_{3}(sol) + 3 H_{2}O$ |
| $(c)$ Oxidation | $(iii) \; SO_{2} + 2 H_{2}S \rightarrow 3 S(sol) + 2 H_{2}O$ |
| $(d)$ Double Decomposition | $(iv) \; FeCl_{3} + 3 H_{2}O \rightarrow Fe(OH)_{3}(sol) + 3 HCl$ |
Choose the most appropriate answer from the options given below.
DifficultJEE MAIN 2021
View SolutionAt the critical micelle concentration $(CMC)$,..........
Easy
View SolutionWhy is gelatin used in the preparation of ice cream?
Easy
View SolutionWhich of the following ions can cause coagulation of proteins?
Difficult
View SolutionExplain the terms with suitable examples:
$(i)$ Alcosol
$(ii)$ Aerosol
$(iii)$ Hydrosol.
$(i)$ Alcosol
$(ii)$ Aerosol
$(iii)$ Hydrosol.
Difficult
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