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In the following questions, a statement of assertion (A) is followed by a statement of reason (R ) A : LiCl is more covalent than BeCl_(2) R : Li^(*) ion is smaller than Be^(2+) .

In the following questions, a statement of assertion (A) is followed by a statement of reason (R ) A : Lattice energy ofCaO is higher than LiCl. R : Lattice energy of ionic compound is directly prportional to the product of charges of ion.

In the following questions, a statement of assertion (A) is followed by a statement of reason (R ) A : Equal number of sigma and pi bonds are present in ethyne. pi Bond is stronger than sigma bond.

In the Arrhenius for a certain reaction, the value of A and E_(a) (activation energy) are 4 xx 10^(13) sec^(-1) and 98.6 "kJ mol"^(-1), respectively. If the reaction is of first order, the temperature at which its half-life period is 10 minutes is

In the arrhenius equation, what does the factor e^(-E_(a)//RT) correspond to ?

In the Arrhenius equation equation,the Boltzmann factor e^(Ea//RT) represents the…………..of the molecules possessing energ in excess of activation energy

In the Arrhenius equation , K=Ae^(-Ea//RT), Arrheniuns constant

In the Arrhenius equation k=A e^(-E_a//RT), A may be termed as rate constant at …………. .

In the anion RCOO^(-), the two carbon -oxygen bonds are found to be of equal length. What is the reason for it?

In the analysis of basic radicals, the group reagent H_(2)S gas is generally used in the groups

In the analysis of basic radicals, NH_(4)OH and NH_(4)Cl give precipitate with

In theanalysis of a 0 .50 -gsample of feldspar, mixture, of thechlorides ofNa and Kis obtained, whichweight 0.1180 g . Subsequenttreatmentof themixedchlorides. with silver nitrate gives 0.2451 g of AgCl . Whatis the percentage of sodiumoxideand potassiumoxide in feldspar ?

In thealuminothermiteprocess,aluminium actsas

In the aluminothermic process, aluminum acts as

In the aluminothermic process

In the aluminium thermite process, aluminium acts as

In the aluminothermic process, aluminium acts as:

In the alkylation of benzene , stable alphacomplex can be

In the alpha-halogenation of aliphatic acid (HVZ reaction ) the catalyst used is:

In the Alksline earth metals, the element forming predominantly covalent compound is

In the adsorption of oxalic acid by activated charcoal, the activated charcoal is known as:

In the adsorption of oxalic acid by activated charcoal, the activated charcoal is known as :

In the adsorption of a gas on solid, Freundlich isotherm is obeyed. The slope of the plot is zero. The extent of adsorption is

In the addition of HBr to propene in the absence of peroxides the first step involves the addition of :

In the acidic medium MnO_(4)^(-) acts as an oixidising agent. MnO_(4) + 8H^(+) + 5e^(-) to Mn^(2+) + 4H_(2)O If the [H^(+)] is reduced to half of its original value, the electrode potential of the half cell MnO_(4), Mn^(2+) |Pt (log 2=0.3010)

In the addition of HBr to propene in the absence of peroxides, the first step involves the addition of:

In the addition of HBr to propene in the absence of peroxides, the first step involves the addition of

In the acid - base reaction,HCl + CH_(3)COOH hArr Cl^(-)+CH_(3)COOH_(2)^(+)the conjugate acid of acetic acid is

In the acid hydrolysis of an ester what is the time taken for complete hydrolysis ?

In the acetylation of glucose, which group is involved in the reaction

In the above transaformation 'X' could be

In the above set of redox reactions, where MnO_(4)^(-1)is the only oxidising agent, order of the required molar quantities of the reducing agents is :

In the above sequence Y is:

In the above sequence X is

In the above reaction, X stands for

In the above sequence, II is

In the above sequence, II is :

In the above reaction the major product is shown, which is formed through the intermediate (carbocation given below:Which bond will migrate to form above product ?

In the above reaction sequence X & Y are.

In the above reaction sequence, A , B and C respectively are

In the above reaction (in Q.99) Na_(2)S_(2)O_(4) acts as a

In the above question, the order w.r.t. B is:

In the above question, solution is opticaly inactive when :

In the above question, the velocity acquired by the electron will be:

In the above question if cone, of the reactant is less than 1 M, then

In the above question

In the above problem if concentration of reactant is less than 1 M then:

In the above problem if concentration of reactant is 1 M then: