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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 solve the question, we need to evaluate each statement and determine whether it is true (T) or false (F). Let's analyze each statement step by step: ### Step 1: Analyze Statement (a) **Statement:** Micelles formation takes place only above craft temperature. **Evaluation:** This statement is true. Micelles form when surfactants are present above a certain temperature known as the Kraft temperature (Tf) and above a specific concentration known as the critical micelle concentration (CMC). **Conclusion:** T ### Step 2: Analyze Statement (b) **Statement:** ZSM-5 is a type of zeolites used as a catalyst in petrochemical industries. **Evaluation:** This statement is also true. ZSM-5 is indeed a type of zeolite that is widely used as a catalyst in various petrochemical processes, including cracking and isomerization. **Conclusion:** T ### Step 3: Analyze Statement (c) **Statement:** A micelle is an aggregation of surfactants in aqueous solution, often spherical. **Evaluation:** This statement is true. Micelles are formed by the aggregation of surfactant molecules in an aqueous solution, and they typically adopt a spherical shape, with hydrophobic tails pointing inward and hydrophilic heads facing outward. **Conclusion:** T ### Step 4: Analyze Statement (d) **Statement:** Lyophilic sols are irreversible sols. **Evaluation:** This statement is false. Lyophilic sols (sols where the dispersed phase has a strong affinity for the dispersion medium) are reversible; they can be re-dispersed after coagulation. In contrast, lyophobic sols are typically irreversible. **Conclusion:** F ### Final Order of True (T) and False (F) Based on the evaluations: - (a) T - (b) T - (c) T - (d) F Thus, the correct order of initials is: T, T, T, F.
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Knowledge Check

  • Give the conect order of initials T(true) or F(false) for following statements [3] I : Lyophobic sols are irreversible sols. II : Micelles fonnation takes place only above krafc temperature III : PO_4^(3-) ions have more coagulation value than SO_4^(2-) 2ions for coagulation ofpositive sols. IV : The volues of the colligative properties observed exXperimcntall are ve small of colloied sols

    A
    F T T F
    B
    T F T F
    C
    T T T T
    D
    T T F T

  • Give the conect order of initials T(true) or F(false) for following statements [3] I : Lyophobic sols are irreversible sols. II : Micelles fonnation takes place only above krafc temperature III : PO_4^(3-) ions have more coagulation value than SO_4^(2-) 2ions for coagulation ofpositive sols. IV : The volues of the colligative properties observed exXperimcntall are ve small of colloied sols

    A
    F T T F
    B
    T F T F
    C
    T T T T
    D
    T T F T

  • Give the correct order of initials T or F for following statements. Use T if statements is true and F if it is false. (i) In gold schmidt thermite process aluminium acts as a reducing agent. (ii) Mg is extracted by electrolysis of aq. solution of MgCl_(2) . (iv) Red Bauxite is purified by Serpeck's process.

    A
    T T T F
    B
    T F F T
    C
    F T T T
    D
    T F T F

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