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Enthalpy of formation of alkali metal halide is -ve For fluride enthalpy bcome less -ve down the group but for others opposite is true source NCERT wHY THIS DIFFERNCE ARISES? ...
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y2 = 2c(x+ c ) find order and degree iit qsn After double differentiation im getting yy''+y'2=0 from this order is 2 and degree is 1 but it's wrong Ican not understand why it's wrong Hel[p me in solving this Q. ...
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Two photons having equal wavelength have equal linear momenta but equal linear momenta may not have equal wavelength can anyone explain this statement this is given in hcv i think its wrong see hcv hurdles also ...
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Which of the following will give acidic solutoin 1) Na2CO3 2) H2S 3) CuSO4 4) NaBr ...
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The natural nos. r grouped as (13), (57911), (13,15,17,21,23),........ Find the sum of the nos. in nth group? 1) 4n3 2) 3n2 3) 2n2 4) n ...
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A non conducting sheet of larg surface area and thickness d contains uniform distributoin of density ∂. find E at a pt. P inside the plate, at a dist. x from the cetral plane. ...
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Pls explain y capacitance of a Parallel plate capacitor becomes Infinite when connected with metal rod in b/w. ...
