Recently Active Chemistry Questions

A transition of H-atom spectrum has wavelength 1032Ao.Find the transition.(n1 and n2) ...

Calculate the uncertainty in the velocity of a wagon of mass 2000 kg,whose position is known to an accuracy of ±10 metre. ...

How many times does the electrons go round the first Bohr's orbit of hydrogen in one second? ...

Find the volume of CO2 at NTP obtained on heating 10 gm of pure 90 % pure limestone how to proceed? ...

A body weighing 3x103kg is moving and its speed can be measured with an accuracy of ±0.0025 mile per hour and its position with an accuracy of ±0.01 mile.Is the uncertainty principle valid? ...

What does oxoketomethyl benzene when treated with NBS in presence of CCl4 yield?I am not sure about the nomenclature(sorry) but the structure shows a benzene ring with -OCOCH3 at the 1-position and a double bond between the 2 ...

haloalkanes are slightly soluble in water as we dont get the energy to break the C-Cl bond as it has partial double bond character. But what if we heat the beaker where reaction is taking place. would it then be soluble? ...

using cross formulas, which of the following compounds are chiral? a) 1 chloropentane... b) 2 chloropentane... c) 3 chloro 2 methyl pentane d) 2 bromo 1 chlorobutane ...

i m too weak at Chemistry... actually something because of which i won't be selected in JEE is just this chemistry... especially the organic part... our chem. teacher was going good with chem but got transferred from our FIIT ...

What is the hybridisation used by Cl in ClO2- a) sp3 b) sp2 c) sp d) NOT!! give full expl!! ...

How many times larger is a hydrogen atom than the radius of an H atom in its ground state if the H atom with an electron characterised by a quantum number of 106? (a)106 (b)212 (c)11236 (d)none of these ...

Emission spectrum of Li2+ has 10 lines.Find wavelength of photon having minimum and maximum energy. ...

on reaction of toulene with X2 in the presence of FeCl3 in dark , X is attached to ortho position and not at benzylic position .Why? ...

*Image* +Mg-Hg+H2O→A A+H+→B then what is A and B? ...

If we doubled the concentration of x In the reaction X→Y, then rate of the reaction become 4 times of it's initial rate. what is the order of the reaction?? ...

A current of dry air was bubbled through a bulb containing 26.6 g of an organic substance in 200 gms of water, then through a bulb at the same temperature containing pure water and finally through a tube containing fused calc ...

If atom X has 6 unpaired electrons.Find probable atomic number of X. Consider elements upto atomic number 50. ...

*Image* (I) is weaker base than (II)... Explain..!! ...

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The natural titanium oxide, known as rutile and containing 39.95% of oxygen, is isomorphous with SnO2, known as casseterite. Calculate the atomic weight of titanium. ...

What are the products formed when 1-2 dimethylbenzene reacts with O3 in presence of CH3Cl and Zn dust??? ...

The enzyme carbonic anhydrase catalyses the hydration of CO2.This reaction:CO2+H2O→H2CO3,is involved in the transfer of CO2 from tissues to the lungs via the bloodstream.One enzyme molecule hydrates 106 molecules of CO2 per ...

4.9 g of KClO3,,on heating,shows a weight loss of 0.384 g.What per cent of the original KClO3 has decomposed? ...

*Image* Which of the following isomeric hydrocarbons is most acidic? ...

Find the mass of Cu(NO3)2.3H2O produced by dissolving 10 g of copper in nitric acid and then evaporating the solution. ...

The rate of Solvolysis of alkyl halide in 50% aq. ethanol is maximum for *Image* ...

Q In complex [Fe(H2O)5(NO)]2+ , NO molecule is present as : Attempt: The answer given is NO+, But I think here NO is neutral. Q An equimolar mixture of toulene and chlorobenzene is treated with a mixture of Conc. Nitric acid ...

Can anybody tell what is it exactly is a "zwitterion"? Also can any dipolar molecule can be called as zwitterion???? ...

1) starting with this one-work done dW=PextdV but in all the cases we take Pext=nRT/V in solving the problems,we integrate from there but Pext is not equal to nRT/V??? then why are we taking equal??? 2) internal energy- Does ...

Q1. When we nitrate benzene using conc. HNO3 + conc. H2SO4 let the rate of reaction be R1. If we nitrate benzene but instead of protium we have deuterium atoms, let the rate be R2. (Assume that the substrate does NOT give muc ...