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For the preparation t-butylmethlether Williamson.s method the correct choice of reagents is :

For the preparation of p nitroiodobenzene from p-nitroaniline the best method is

For the preparationof isopropyl acetate from esterification. The compounds used as ,

For the preparation of ethyl propionate from ethyl bromide, the other reactant required is

For the preparation of alpha,beta unsaturated ketonde, the only CORRECT combination is :

Forthepreparationof alkanes,asaturatedsolutionsodiumorpotassiumsaltofcarboxylicacidissubjected to :

For the preparation of Alkanes, aqueous solution of sodium or potassium salt of carboxylic acid ist subjected to

For the preoarations of alkyl chlorides from alcohols, thionyl chloride (SOCl_2) preferred.Given reason.

For the precipiyation of AgCl by Ag^+ ions and HCl:

For the precipitation group IV metal ions as their insoluble carbonates, a saturated (NH_(4))_(2)CO_(3) solution is added as a group reagent. But Na_(2)CO_(3) or K_(2)CO_(3) should not be used as the group reagent because

For the Paschen series the values of n_(1) and n_(2) in the expression DeltaE=R_(H).c(1/(n_(1)^(2))-1/(n_(2)^(2)))

For the order thermal decomposition reaction, the following data were obtained : C_(2)H_(5)Cl(g)rarrC_(2)H_(4)(g)+HCl (g){:("Time/Sec","Total pressure /atm"),(0,""0.30),(300,""0.50):} Calculate the rate constant. (Given: log2 = 0.301, log3 = 0.4771 and log4 = 0.6021)

For the octahedral complexes of Fe^(3+) in SCN^(-)(thiocyanato-S) and in CN^(-) ligands environment, the difference between the spin-only magnetic moments in Bohr magnetons (when approximated to the nearest integer) is : [Atomic number of Fe=26]

For the orthorhombic crystal system

For the octahedral complex of Fe^(3+) in SCN^(-) (thiocyanato-S) and in CN^(-) ligand environments, the difference between the spin only magnetic moments in Bohr magnetons (when approximated to the nearest integer is [Atomic number of Fe = 26]

For the nuclear reaction, ._(Z)^(A)X to ._(Z-4)^(A-8)Y,"" t_(1//2=1600yrs. If initial activity was 10^(7) dps, how many alpha-"particles" will be emitted per second after 4800yrs?

For the non-stoichiometric reaction: 2A + B to C +D, the following kinetic data were obtained in three separate experiments, all 298 K The rate law for the formation of C is:

For the non -stoichiometric reaction : 2A+B rarr C+D the following data were obtained in three separate experiments experiments all at 298 K The rate law for the formation of C is

For the non-equilibrium process, A + B rarr products, the rate is first-order w.r.t. A and second-order w.r.t. B. If 1.0 mole each of A and B indroduced into a 1.0 L vessel and the initial rate was 1.0xx10^(-2) mol L^(-1)s^(-1) , rate when half reactants have been turned into products is :

For the mixture of liquid "A" (P^(0)=40mmof Hg) and liquid "B" (P^(0)=72mm of Hg), the vapour pressure is found to be 56mm of Hg. Assuming ideal behaviour of the solution

For the Mg-Ag cell, how many times the difference between the EMF of the cell and its standard EMF will change if concentration of Mg^(2+) ions is changed from 0.1 M to 0.01 M and that of Ag^(+) ions is chagned from 0.5 M to 0.25 M?

For the metallurgical process of which of the ores,calcined ore can be reduced by carbon ?

For the mechanism Step1: A+Bunderset(E_(a-1))overset(E_(a-1))hArrC+D Step2: 2Coverset(E_(a,2)) to G+H Step 2is rate -determining Given the activation energies E_(a.1)=120KJ//mol,E_(a,-1)=96KJ//mol and E_(a,2=196KJ//mol Find E_(a) for the overall reaction. [2A+2Bto2D+G+H]

For the metallurgical process of which of the ores calcined ore can be reduced by carbon ?

For themetallurgicalprocesofwhich oftheorescalcinedorecanbereducedbycarbon ?

For the manufacture of Ammonia by Haber's process, write the equation and optimum conditions for maximum yield of ammonia.

For the line water test , if the observation are positionfor the unknown sample , then which of the followingconclassion (s) is /areincorrect?

In the manufacture of ammonia by Haber's process. Write the flow chart and chemical equations with optimum conditions.

For the manufacture of Ammonia by Haber’s process, write the flow chart and chemical equation with suitable conditions.

For the isothermal explanation if an ideal gas

for the identification of beta-naphthol using dye test, it is necessary to use

For the hydrolysis of methyl acetate in aqueous solution, the following results were obtained, a) Shat that it follows pseudo first order reaction, as the concentration of water remains constant. b) Calcualte the average rate of reaction between the time interval 30 to 60 seconds.

For the hydrolysis of esters in alkaline mediumrate expression is : -(d[ester])/do=K[Ester][Alkali] In case alkali used is in excess, then the overall order of the reaction is:

For the hydrolysis of esters in alkaline medium rate expression is, -(d["Ester"])/(dt)=k[ Ester][Alkali]. Inspace alkali used is in excess, then the overall order of the reaction is

For the hydrolysis of esters in alkaline mediumrate expression is : -(d[ester])/(dt)=K[Ester][Alkali] In case alkali used is in excess, then the overall order of the reaction is:

For the homogenous reaction xA+yB iff 1Y + mZ DeltaH^(@) = -30kJ mol^(-1) and DeltaS=-100JK mol^(-1) At what temperature the reaction is at equilibrium

For the hydrolysis of a salt of weak acid and weak base, the hydrolysis constant is :

for the homogeneous gaseous reaction A(g) +2B(g) hArr C(g) at 300K. the value of K_c=0.1 When 2 mol of each of A and B are mixed then what will be the approx equilibrium pressure if 30% of A is converted to C? [given that(3.18)^1/2 = 1.78]

For the homogeneous gas reaction at 600 K 4NH_(3_(g))+5O_(2_(g))hArr4NO_((g))+6H_(2)O_((g)) the equilibrium constant K_(c) has the unit

For the half life period of a first order reaction which one of the following statements is generally false ?

For the half-life period of a first order reaction, which one of the following statements is generally false?

For the half-life period of a first order reaction, which of the following statements is false?