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Chemical Equilibrium — JEE Main & Advanced NSEC PYQs

11 previous year questions from Chemical Equilibrium with answers and solutions. Numbered list, year tags, and one-tap solutions — built for serious JEE / NEET practice.

11 questionsNSECSolutions on every page
1

Solubility product of AgCl is 1.8 10⁻¹⁰ . The minimum volume (in L ) of water required to dissolve 1 mg of AgCl is close to

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The equilibrium constants of the following isomerisation reaction at 400 K and 298 K are 2.07 and 3.42 respectively. cis-butene k _ -1 k ₁ trans-butene Which of the following is/ar

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The undissociated form of a weak organic acid HA can be extracted from the aqueous phase into an organic phase using a water-immiscible organic solvent according to the following s

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The standard molar entropies of H ₂( ~g ), N ₂( ~g ) and NH ₃( ~g ) are 130,190 and 193 ~J ~mol ⁻¹ ~K ⁻¹ respectively. For the reaction 1 / 2 ~N ₂( ~g )+3 / 2 H ₂( ~g ) NH ₃( ~g )

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The reaction xX ( g ) yY ( g )+ zZ ( g ) was carried out at a certain temperature with an initial pressure of X=30 bar. Initially ' Y ' and ' Z ' were not present. If the equilibri

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Given below is the data for the reaction 2 NO ( g ) N ₂( ~g )+ O ₂( ~g ) where ' k _ f ' and ' k _ b ' are rate constants of the forward and reverse reactions respectively Temperat

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Acetic acid ( CH ₃ COOH ) is partially dimerised to ( CH ₃ COOH )₂ in the vapour phase. At a total pressure of 0.200 atm , acetic acid is 92.0 % dimerized at 298 K . The value of e

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The qualitative plots given represent the yield of the product, [ XY ] , at equilibrium in the reaction X ( g )+ Y ( g ) XY ( g ) , as a function of temperature, at total pressures

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The mass ratio of steam and hydrogen is found to be 1: 1.5 at equilibrium in the following reaction 3 Fe ( ~s )+4 H ₂ O ( ~g ) Fe ₃ O ₄( ~s )+4 H ₂( ~g ) The value of the equilibri

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The equilibrium constant ( K _ c ) for trimerization of phenyl acetylene to triphenyl benzene is 3.0 at 310 K . If at equilibrium, 0.9 ~mol dm ⁻³ of triphenyl benzene is present, c

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Eriochrome black T (EBT) is an indicator in titrimetric estimation of calcium at pH 10.0 giving pink colour to the solution. It has structure as shown below. Considering that the p

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