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Give the correct order of initials T(tru...

Give the correct order of initials T(true) or F(false) for following statements.
(a) Micelles formation takes place only above craft temperature
(b)ZSM-5 is a type of zeolites used as a catalyst in petrochemical industries.
(c)A micell is an aggregation of surfactants in in aqueous solution, often spherical
(d) Lyophilic sols are irreversible sols

A

T F F T

B

T T F F

C

T T T F

D

F T T F

Text Solution

AI Generated Solution

The correct Answer is:
To determine the correct order of initials (T for true and F for false) for the given statements, we will analyze each statement one by one. ### Step-by-Step Solution: 1. **Statement (a): Micelles formation takes place only above Kraft temperature.** - **Analysis:** Micelles are formed when surfactants aggregate in solution, and this process requires energy. The Kraft temperature is the minimum temperature at which micelle formation occurs. Therefore, this statement is TRUE. - **Initial:** T 2. **Statement (b): ZSM-5 is a type of zeolite used as a catalyst in petrochemical industries.** - **Analysis:** ZSM-5 is indeed a well-known zeolite that is widely used as a catalyst in petrochemical processes, particularly for the isomerization of hydrocarbons. Thus, this statement is TRUE. - **Initial:** T 3. **Statement (c): A micelle is an aggregation of surfactants in aqueous solution, often spherical.** - **Analysis:** Micelles are formed by the aggregation of surfactant molecules in an aqueous solution, and they typically adopt a spherical shape to minimize energy. Therefore, this statement is TRUE. - **Initial:** T 4. **Statement (d): Lyophilic sols are irreversible sols.** - **Analysis:** Lyophilic sols exhibit strong interactions between the dispersed phase and the dispersion medium, which allows them to be reversible. They can be re-dispersed after coagulation. Hence, this statement is FALSE. - **Initial:** F ### Final Order of Initials: - (a) T - (b) T - (c) T - (d) F Thus, the correct order of initials is **T, T, T, F**.
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