Recently Active Chemistry Questions

Here is some info regarding polymers from wikipedia. 1.Natural rubber: Natural rubber is an elastomer (an elastic hydrocarbon polymer) that was originally derived from a milky colloidal suspension, or latex, found in the sap ...

1..are these positional or functional isomers -Ph-OH and Ph-CH2OH...give explanation ...

teh rms velocity of hydrogen is √7 times the rms velocity of nitrogen. If T is the temperature of the gas, T(H2) = T(N2) or T(H2) < T(N2) i am getting that both are equal....but the answer given is the second option p.s. ...

Not to be outdone by Manmay's and Anand's excellent threads, I am making a thread for organic reagents. Post as many as you can! I begin with the chapter alkyl halides. You may continue it or post the functions of other reage ...

..select correct statement ------ 1..NH3 is more soluble in aq. NH4Cl than in pure water 2..solid amm. fluoride and ice are miscible in water in all propartions..... (give explanation[98] ...

1..formula for complex is (Co4)Co- (Co4)Co,in which there is single Co-Co bond is . a.Co2(Co)8 b.Co2(Co)10 ...

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CARBOCATION FORMATION STABILITY ORDER?????? a b c d e CH3-CH=CH-CH2-CH3-(CH3)2 ...

*Image* Predict the product(actually which is not tough....i was too lazy to draw i) and give the mechanismt. ...

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Generally people miiss out chapters like surface che, and all but there can be conceptual questions too. e.g. Q)explain why there would be no observable " Tyndall Effect" when diameter of dispersed particle is much smaller th ...

wat is the O N of 1) Cr in CrO5 2)S in H2SO5 why is with normal way of finding ON the ans is not coming ...

the depression in freezing point (for the same amount of each) is: acetic acid<trichloroacetic acid<trifluoroacetic acid...explain NCERT Class XII part 1 pg. 61 q)2.31 ...

Eq constant for reaction [Ag(CN)2]- ≈ Ag+ +2CN- is 4 x 10-19 calulate silver ion conc in a soln which is originally 0.1M in KCN and 0.03 M in AgNO3 ...

(1)CH≡CH react with Cu2cl2 and NH4Cl to form A. A reacts with 1eq H2 and give B. Find A and B. (2)Mendelic amide reacts with Br2/KOH to give?? (3)What is the co-ordination number of C in solid (LiCH3)4? please give answer w ...

(1)What is Corey house reaction?Is it a nucleophilic addition?Please state its mechanism. ...

CArefully see the interplay of ortho effect,h-bond and mesomeric effect Arrange the following in increasing acidity 1) a. o-nitroaniline b. *Image* ...

friends weak in chemistry help required : tell me the basic concept of titration and how can we use different indicators in different titration ,also tell me about titration curve. ...

1) A metallic element crystallises into a lattice containing a sequnece of layers of ABABAB.. Any packing of spheres leaves out voids in the lattice. Percentage of Empty Space (by Volume) is - a)52% b)48% c)50% d)74% Its clea ...

Qn(s) frm one of the OrG. tests here. 1) Among the following which is highly acidic? 3-hydroxy Benzoic acid 2-hydroxy Benzoic acid 4-hydroxy Benzoic acid a) 3>1>2 b) 2=1>3 c) 1>2>3 d) 1>3>2 ( ANs: d... ex ...

Just answer all these organic's question and tag reason with it as well. Q1: Napthalene + ( COCl-COCl ) ------(AlCl3)--> A ---(Zn(Hg)/HCl)--> B. Q2: *Image* ---> A ----( NH2-NH2 ) B --- (Se + heat ) ----> C ...

Q1: CH2=CH-CH2-CH2-NH2 ---(NaNO2 (aq) + HCl) ---> Major Product. Identify major product! Options: a) CH3-CH(Cl)-CH2-CH2-OH b) (cyclopropane)-CH2-OH c) CH2=CH-CH2-CH2-OH d) CH2=CH-CH(OH)-CH3 Q2: H2O is leaving group D2O is ...

Arrange the following in increasing order of extent of hydrolysis (A) PCl3 > AsCl3 > SbCl3 > BiCl3 (B) PCl3 > AsCl3 > BiCl3 > SbCl3 (C) BiCl3 > SbCl3 > AsCl3 > PCl3 (D )BiCl3 > SbCl3 > AsCl3 â ...

Q1. multi: cooloidal gold can be prepared by (a) bredig's arc method (b) reduction of AuCl3 (c) hydrolysis (d) peptization Q2. multi: Select correct statements (a) Buring carbylamine rkn, intermediate is carbene (b) During Do ...

Number of S-S bond present in P4S3 is ___. Can we do this if we dont know the structure ? ...

An optically active alcohol (A) [C6H10O] absorbs 2 moles of hydrogen per mole of [A] upon catalytic hydrogenation and gives a product [B].[B] is resistant to oxidation by CrO3 and does not show any optical activity.What is no ...

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:: Single Option Correct :: *Image* (Thts a Methyl Group in Qn 2)) 3)Which can be prepared from NitroBenzene by SE reaction...? a) o-dinitro benzene b) p-dinitro benzene c) m-nitro toluene d) m-dinitro benzene ...

***Q2,4,5 done....plz reply only to Q1,3** *Image* ...