Recently Active Chemistry Questions

what is the structure of elaidic acid ...

A sample contains both H3PO4 and HIO3 along with other unknown substances.10 g of sample required 85 ml of 0.15 N NaOH during titration with phenolphthalein as indicator.A separate 10 g sample required 66ml of 0.15 N NaOH dur ...

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1-bromo prop-1-ene + Bu-Li+ → A A+CuI + ether → B B+ 3-bromo cyclohex-1-ene → C what is C? plz briefly specify the mechanism ...

what is the difference between "Hydrogen Bond" and "covalent Bond"...???....like water is a hydrogen bond but not a covalent bond.... ...

pH depends upon the temperature....how??????....it is somewhat related to the no. of the H+ ions per mole.....may be... plzz...explain... ...

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1. Why does 2-dimethyl sulphonium butane in a base( ethoxide in ethanol) produces 74% 1-butene (hofmann) and 26% 2-butene (Saytzeff) ?????????????? 2. Why does 2- trimethyl ammonium butane in base(hydroxide in water) produces ...

What is PET in pet bottles ? Pet as in animal,because the bottle is easy to carry Poly ethene three Poly ethene Tetrapthalate None of thse Your Answer c Correct Answer b HOW IT IS POSSIBLE? ...

Which is not related with silk industry sericulture moriculture apiculture reeling Your Answer c Correct Answer d HOW IT IS POSSIBLE WHEN REELING IS RELATED TO SILK INDUSTRY? ...

How much volume of air will be needed for complete combustion of 10 lit. ethane? I'm getting the answer as 35 but the answer given is 175 lit. ...

Q).Oxygen is a).a halogen b).an alkaline earth c).a noble gas d).a nonmetal ...

""""Organic chemistry is the study of carbon compounds (except CO, CO2, carbonates, hydrogencarbonates, carbides and cyanides) obtained from natural sources or synthesized in the laboratories."""""" so, my questn is that...y ...

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10 g sample of zinc was dissolved in 200 ml of 0.1 N KMnO4 solution acidified with H2SO4.The KMnO4 solution was totally discharged.It was found that a gas was produced which when allowed to react with the requisite amount of ...

0.395 g of a volatile liquid gives 27.3 cc vapour collected over water at 25oC and 720 mm pressure. Aqueous Tension at 25oC is 23.1 mm. Calculate the molecular weight of the liquid. ...

1.SN1,SN2,E1,E2,E1cb In how many of these cases is entropy change positive?(Give reason for ur answer) 2.A catalyst decreases the energy of activation of the reaction A→B,del.H=37.012Kcal,by 2%.At 27°C 4*10^-8 % of product ...

Why are ketones more polar than aldehydes? Shouldn't it be the other way round as ketones have 2 e donating species which reduce their polarity to a larger extent? ...

i know about oxidation number but how can i define it..??????....pllzzz help... ...

What is the difference between a base and a neucleophile? ...

Which is a soluble base in water? a. Fe(OH)3 b. Cu(OH)2 c. Zn(OH)2 d. NaOH ...

PLease give the solutions and pl don't use equivalent concept as these questions are for school. ...

Which oxide of a metal gets reduced only by coke and not by H2 gas or Co gas? a. CuO b. PbO c. Fe2O3 d.ZnO ...

What are the products formed when lead nitrate reacts with hydrochloric acid? ...

Why do substances dissolve in water? And how? ...

How many optical isomer are possible for an alkane with the molecular formula C7H16? ...

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Hydrogen can be found in both free state and also combined state.But the answer is -only free state,WHY?? ...

is solomon and fryhle edited by ms chouhan a good book for organic chemistry? ...

How can we convert Anniline to phenyl isocyanide? ...