Recently Active Chemistry Questions

WHICH OF THE FOLLOWING ALKYL HALIDES WILL REACT FASTEST WITH AQ. NaOH AT HIGH TEMPERATURE AND PRESSURE A)Ph-Cl B)Cl-Ph-Nh2 C)CH3-Ph-Cl D)CH3-Ph-NH2 ...

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please explain wat u have understand because u can give some more precise defn for these concepts 1)inert pair effect 2)crystalfield theory ...

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CH3NH2 (.1 mole.KB=5*10-4)is added to .08 moles of HCL and the solution is diluted to one liter.The resulting hydrogen ion concentration will be ________________ ...

i have a doubt plz clear glucose forms many derivatives. hte derivatives which hel p to prove the furanose structureis a)osazone b)benzoyl c)acetyl d.)isopropyldiene give reason & reaction both plzzz ...

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the titration curve for weak acid HA is shown.At which point in the titration is conc. of HA equal to conc. of conjugate base A?and WHY? *Image* ...

The graph shows titration curve for diprotic acid using standard NaOH soln Which of these is correct a)vOL A) represents 1st end point b)pH B) represents end pt at pH=7 c)pH D represents half neutralization pH that maybe ...

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of the possible 2 attacks by the H+ ion which one is more favoured *Image* and explain why ...

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Q-1 natural silk is: a)polyester b)polypeptide c)polyurethane d)polyamide Q-2 the compound act as anti-dandruff agent (may) a)hexachlorophene b)resorcinol c)salicyclic acid d) all plzz answer htem with exp. also ...

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This reversible reaction is 1st order. *Image* Q1 Calculate rate constant for forward direction. Q2The concentration of reactant remaining after 1hr is? Q3Draw curve of concentration v/s time of A and B simultaneously. ...

An achiral hydrocarbon A ,C6H12 was reacted with Bromine/UV light to give B as the major product.B was found to react quickly with AgNO3/ethanol and slowly with NaI in acetone.When B was heated with KO-t-Bu in t-BuOH it gave ...

A particular water sample has 131ppm CaSO4.What fraction of water must be evaporated in a container before solid CaSO4 begins to deposit.Ksp of CaSO4=9*10-6 ...

Steam is passed over hot carbon to attain equilibrium at 400K C(s) + H2O(g)<====>CO(g) +H2(g) The eq constant is K=1.34 and total pressure of eq mixture is 200kPa.What are mole fractions of all substances at equilibrium ...

0.85g sample of pyrites FeS2 was fused and sulphur oxidised to SO42-.The ppt. of BaSO4 weighed 1.43g.Whats % of pyrites in the ore? Ans43.22% ...

Write the stricture of monomer used for getting polymer PMMA ...

In a reaction at equilibrium x mole of reactant A decompose t ogive 1 mole of C and D.It was found that the fraction of A decomposed at eq is independent of conc. of A,then calculate X. ...

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does dinitrogen is a colourless gas at 1) room temp 2) elevated temp 3)or both the temp please explain ...

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0.25g sample of MnO2 is dissolved in HCl soln. and distillate passed through iodine soln. .The iodine thus liberated reqd 50mL 0.11N thiosulphate soln. Calculate purity of MnO2. ...

Given that radius of: Ca=94pm o2-=146pm in a lattice Calculate thecoordination no. of the lattice ...