Recently Active Chemistry Questions

Pls throw some light on-- " four fold molecular freezing point depression." ...

what is the structure of (S)-(3-azido-2-methylpropyl)methyl ether ?? ...

*Image* ...

true or false................ 1.reaction of benzene with cyclopropane and AlCl3 gives n- propyl benzene. 2.reaction of benzene wit cyclopropane and AlCl3 in cold gives n- propyl benzene. 3.reaction of benzene with propionylch ...

*Image* ...

Q 1 litre of a mixture of He and CO2 diffuses in 10 minutes under similar condition. If 1 litre of Helium diffuses in 5 minutes. Then the composition of Helium and CO2 in the mixture is 1) 70 : 30 2) 35 : 65 3) 50 : 50 4) 25 ...

Which is a wrong assertion about the effect of temp. on distribution of mlecular speeds a)the area under the curve of temp vs kinetic energy of particles changes b)the distribution becomes broader c)the fraction of molecules ...

*Image* please give the IUPAC nomenclature a)ethyl methyl p-amino benzoic acid b)4-(ethyl methyl amine) benzoic acid ( just two options accha hai na ...

*Image* *Image* *Image* *Image* ...

How many kinds of primitive unit cells are possible Select Answer: 23 7 230 14 how..........wat are primitive unit cells ...

*Image* ...

Phenol ,when it first reacts with conc H2SO4and then with conc HNO3gives.... ...

please give a detailed reasoning to your solution:: [CoCl4(H2O)2]2- + (edta)4- = [Co(edta)]2- + 4Cl- +2 H2O ALL ARE aquous. if H2o is added in above equilibrium(initially it is in equilibrium) what will happen? ...

*Image* ...

plz help me on this: which of the following is chiral?? 1.cis-1,2 dimethyl cycolbutane 2.trans-1,2 dimethyl cycolbutane 3.cis-1,3 dimethyl cycolbutane 4.trans-1,3 dimethyl cycolbutane 2.how many C6H12 constitutional isomers a ...

why chloral hydrate [Cl3C-CH(OH)2] is highly stable ?? ...

*Image* ...

which of the following reactions ll generate an isotope a)neutron particle emission b)positron emission c)α particle emission d)β particle emission ...

green Cr+3 changes 2 yellow CrO4-2 ON BOILIN WIT A alkaline H202 B acidified H2O2 ...

Current is passed in AgSO4 aqueous solution & 1.6 gm O2 is obtained. the amount of Ag that will be deposited will be- [Ag=108 gm] ...

a rongalite b nitrolim c hydrolith d minium struktur? ...

solution containin 3.24g of non volatile solute non eltorlyte and 200g water boils at 100.130 at 1atm wats d molclr mass of solute we dnt hav Kb na hw 2 do then i 4gt :'( ...

Ionisation energy-It is the energy required to remove an electron from an isolated gaseous atom. Here,what is the meaning of "isolated gaseous atom"?????? ...

For each reaction, predict which compound would react faster? THESE ARE FOR STARTERS ONLY !!!!! *Image* *Image* ...

At isoelectric point : a) Colloidal particles becomes uncharged 2)colloidal sol becomes highly stable 3)Peptisation can be carried out 4)None of these ...

how many unit cells are present in a cube shaped ideal crystral of NaCl of mass 1g ...

paper-1 question O2 has to matched with p)paramagnetic q)undergoes oxidation r)undergoes reduction s) bond order greater or equal to 2 t) mixing of s & p orbital i matched with all but i saw in brilliant sol. it has not match ...

how to convert wedge-dash to Fisher Projection formula?? plz someone help quick.. ...

observe the given reaction 1/2 Cl2 → Cl-1 δH(enthlpy in kcal/mol)=29.0 the strength of covalent bond in chlorine is(in kcal/mol) a)58.0 b)29.0 c)14.5 D)98.2 ...

among the following substituted silanes the one which will give rise to cross linked silicon polymer on hydrolysis a)R4Si b)RSiCl3 c)R2Sicl2 d)R3sicl ...