Recently Active Chemistry Questions

Paragraph (Questions may have multiple answers) Nitration reaction is classified under electrophilic substitution where the electrophile is NO2+. The reagent used in this reaction is conc. HNO3 + conc. H2SO4. Q1. What is the ...

Are the following mechanisms right ? *Image* *Image* *Image* ...

sommerfield explained the drawback of spliiting of lines when resolved , of bohr by saying that the orbits are elliptical . but what is the necessity that the lines need to have futher futher splittings in elliptical orbits? ...

i read the following from a book but i am not able to understand how the generalised formula is given.plz explain after reading these "the no. of spectral lines produced when electron returns from n2 to n1 energy level =( n2- ...

do anybody know the derivations for the following: >bohr's formula En= 2π2me4 n2h2 >bohr's radius rn= a0n2 Z & rn= a0n2 >mvr=nh 2 π ...

Constant b in DEBYE HUCKLE ONSAGER EQUATION depends on temp.,type of electrolyte and nature of solvent..But please explain whether it increase with increase or decrease in temp.and how it changes with type of electrolyte and ...

1,2 -dimethyl-1,2-dihydroxycyclohexane + conc H2so4and heat gives you ??? ...

.what is a chelate?is [Fe(SCN)]3- a chelate?in how many isomeric forms can [Fe(SCN)]3- exist? ...

when faraday's law of electrolysis fails? ...

Q1. Why does cyclopropane decolorise Br- water even though it doesn't have any unsaturated carbon? Q2. Will 2-methyl propanal show Cannizzaro reaction? i.e. (CH3)2CH-CHO ...

what will be the product(s) when cis 1,2 dimethyl cyclohexane is treated with Br2 please explain with a diagram ,if possible.!!! ...

somebody please tell what can be oxidised by the following oxidising agents and to what extent a. OsO4 b. NaBH4 c. dil KMnO4 d. Conc. KMnO4/OH- e. CrO3/H+ please tell what are the conditions in presence of which these oxidisi ...

why raoult's law not applicable if two volatile liquids are not completely miscible? ...

what are line defects or dislocations? ...

wat s d product of glycerine wen it s heated with oxalic acid at 110°c ...

blood is isotonic with: a]0.16 M NaCl b] conc.NaCl c]50% NaCl d]30% NaCl how to say i dont know ...

if a reaction disproportionates then how will we find the equivalent weight ?????? plz give examples too ...

an aqueous blue coloured solution of a transition metal sulphate reacts with H2S in acidic medium to give a black precipiate (A) which is insoluble in warm aqeous solution of KOH. the blue solution on treatment eit KI in weak ...

Salicyclic acid is stronger thar p-hydroxybenzoic acid. Why ?? Can u pls tell the formula of Salicyclic acid too. ...

if the temp is not kept below 25°c during the rxn of primary alcohol with p-toluenesulfonyl chloride in pyridine, it is sometimes observed that the isolated product is not the desired alkyl p-tou;enesulfonate but is instead ...

How solute -solute interaction affect electrolytic conductance .explain.vivdly ...

how to find a compound is polar or nonpolar, ...

HI FRNDS SORRY TO DISTURB U ALL I WANT D LINK FOR MANIPAL RESULTS ...

Which of the foll will be isotonic at the same temperature? a)0.1 m urea and 0.1m nacl b)0.1 m urea and 0.2m mgcl2 c)0.1m nacl and o.1m na2so4 d)0.1m ca(no3)2 and 0.1m na2so4? With explanation please. ...

a sample of hard water is found to contain 40mg of Ca2+ ions/lit d amount of washing soda [Na2 CO3 ] required to soften 5 lit of sample is [in mg ] K2 Cr2 O7 is isomorphous to K2SO4 it is found to contain 26.78% Cr cal d atom ...

Q1. Why is 1,4 addition product more stable than 1,2 addition product? ...

these r the question i faced in bitsat 2009 on yesterday 1. wat is EDTA A hexadentate ligand B bidentate ,, C tetradentate ,, D pentadetate ,, i mark A 2.wat is the denticity of oxalate A hexadentate B bidentate C tetradentat ...

PbO2+HNO3 will liberate a)NO2 b)O2 c)N2 d)N2O ...

61. If elements of principal quantum number n > 4 were not allowed in nature, the number of possible elements will be (1) 4 (2) 32 (3) 60 (4) 64 pls give explanation thanks... ...

I did a q yeaterday --- which is thermodynamically the most stable allotrope of carbon ? a)graphite b)diamond c)fullerene d) soot I marked b but that was not the ans ... Isnt the solution wrong? ...