Bissoy.com
Doctors Medicines MCQs Q&A

What is the relation between Topotactic reaction and epitactic reactions?

What is the relation between Topotactic reaction and epitactic reactions? Correct Answer Topotactic reactions are more specific than epitactic reactions

Topotactic and epitactic reactions are the orientated reactions or transformation when nucleation makes use of structural similarity. Topotactic reactions are more specific than epitactic reaction because they require not only the structural similarity at the interface but also that this similarity should continue into the bulk of both crystalline phases.

Related Questions

According to Naiya̅yikas we ascertain the relation of universal concomitance between x and y :  (A) We can determine the relation only if we can determine the relation of essential identity between x and y   (B) By perceiving that in all cases the presence of x is accompanied by the presence of y  (C) We can determine the relation only if we can determine the relation of cause and effect between x and y  (D) By not perceiving any instance where the presence of x is not accompanied by the presence of y or vice-versa.  Choose the correct answer from the options given below : 
For the reaction, A = X + Y, the respective concentrations are CA, CX and CY. The forward reaction rate constant is kf and the backward reaction rate constant is kb. Choose the correct statement from the following:
P. At equilibrium, kf CA > kB CxCy
Q. If the reaction is irreversible than, kb CXCY = 0
R. The backward reaction rate will essentially be first order, if the forward reaction rate is first order.
S. Activation energy for the first order forward reaction will be independent of temperature.
Following table represents the type of reactions of three metals with various solutions. Metal lron (II) Sulphate Copper (II) Sulphate Zinc Sulphate A No reaction Displacement Not known B No reaction No reaction No reaction C Displacement Not known No reaction Which of the following represents the correct order of reactivity of metals A, B, C
The most appropriate sequence of the reactions for carrying out the following conversion
Basics of Organic Reaction Mechanism mcq question image
is
The two pericyclic reactions successively involved in the thermal transformation given below are
Basics of Organic Reaction Mechanism mcq question image
Which among the following type of relations are considered by Nya̅ya system as necessary relation between middle and major terms? (A) Species - species relation  (B) The causal relation  (C) Member - class relation  (D) Species - genus relation  Choose the correct answer from the options given below :
The reaction between X and Y to give Z proceeds via
Basics of Organic Reaction Mechanism mcq question image
Rate constant for a first order reaction does not depend upon reaction time, extent of reaction and the initial concentration of reactants ; but it is a function of reaction temperature. In a chemical reaction, the time required to reduce the concentration of reactant from 100 gm moles/litre to 50 gm moles/litre is same as that required to reduce it from 2 gm moles/litre to 1 gm mole/litre in the same volume. Then the order of this reaction is
A chain growth polymerisation reaction consists of three different types of reaction namely initiation reaction, propagation reaction & termination reaction. Chain growth polymerisation reaction is not involved in the manufacture of
For a reaction, the extent of reaction equation is Ni = Nio + ϒVi is Where: Ni = Moles of species I present in the system after the reaction occurs Nio = Moles of species I present in the system when the reaction starts Vi = Stoichiometric coefficient for species i in the specified chemical reaction equation ϒ = Extent of reaction