Recently Active Chemistry Questions

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does C2 exist( it does in vapour state ) now, does c4 exist?????? acc to me, they may / shud luk like this: *Image* ...

two beakers are placed side by side in a sealed enclosure.the first beaker contains 100 mL of pure water,the other,an equal volume of aqueous solution of sugar.whjat will be the volumes of the liquids in the two beakers when ...

in an oswald walker experiment,dry air was first blown thru a solution containing solute(M=278) in 150 g of water and then also thru pure water.the loss in mass of water is 0.0827g while mass of water absorbed in sulphuric ac ...

well guys it's only testing your analytical skills partly and some chemistry skills . read the first passage carefully.and answer it's easy . yet gave. and second one organic is nice. try it . *Image* passage for 1st @ rom te ...

*Image* about that SIGMA 2PX ...nd where sigma 2pz went .. neway give detail explanations and another Q HETERO DIATOMIC MOLECULES for exapmle NO .. the orbital diagram that is taken is it with respect to oxygen i men the high ...

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cofumation wanted......... In case of a cubic cell havin atoms in CCP latticve, at EDGE-CENTRES at FACE CENTERE and at BODY - CENTER relation b/w r of atom and edge length is : ?? is it 4r = a ?? and wats the ratio of radius ...

what happens if you heat allyl phenyl ether. ( 2-propenoxy) benzene. ...

2.0 g of phosphorus and 2.0 g of oxtgen are allowed to react leaving no residue of either of the reactants. Calculate the amount of P4O6 & P4O10 FORMED DURING THE COURSE OF REACTIONS. (Ans. 1.996 g P4O6 & 2.002 g P4O10) ...

Both leads of an LED conductivity probe are dipped in water,dried and then dipped in mercury. in which liquid the LED light up. 1) water 2) Hg 3) Both 4) None ...

*Image* Which of the following is the correct order of rate of solvolysis of the above ? (A) I < II << III (B) I >> II > III (C) I ≈ III > II (D) I ≈ III <II ...

if the rate constant for a reaction represented by 2HI===>H2 +I2 is denoted by K then for same reaction if represented by HI===>1/2 H2 +1/2 I2,the rate constant will be____________. ...

identify least stable ion amongst following: a)Li- b)Be- c)B- d)C- ans given is b but my answer is a becoz Bond order=0 from MOT for a) why is my ans wrong????? ...

why do protons exist in the nucleus of any atom even if they experience repulsive forces from each other?? ...

when 60.26g of VCl4 was added to 1000g of solvent,freezing point of solvent was depressed by 5.415°.Kf=29.9.calculate the no. of dimers,V2Cl8 . ...

plot a curve depicting the temperature dependence of the rate R of a simple one step reaction. ...

tollens reduce aromatic aldehyde dut fehlings do not why ...

incresin hydration of ions a Ba+2 b Sr+2 c Ca+2 d Be+2 e Mg+2 ? n y ? ...

Q.1 ON HEATING CH3-CO-COOH , P is formed , but Q is formed on heating CH3-CO-CH2-COOH. PAND Q ARE>> *Image* Q 2 *Image* Q 3 *Image* Q.4 *Image* Q5. *Image* PLEASE EXPLAIN STEPS AND MECHANISM ANSWERS ARE 1. C 2.BENZO-QUI ...

The oxidant(s) whose oxidizing power is affected with the change in pH is/are ? A] I2 B] Cr2O4- C] MnO4- D] NO3- ...

why the rxn of photosynthesis is spontaneous even if G=+ve for vthis rxn? ...

a long rectangular box is filled with Cl2 (atomic wieght 35.45) which is known to contain only 35cl and 37cl. if the box could be divided by a partition and the two types of Cl2 molecules put in the two compartments respectiv ...

if 100 ml of the acid is neutralised by 100 ml of 0.4M NAOH,the purity of concentrated HCL is?specific gravity=1.6 ...

a student finds that 31.26ml of a 0.165M solution of Ba(OH)2 solution is required to just neutralise 25ml of citric acid[H3C6H5O7.WHAT is the concentration of the solution? ...

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IIT - 2005 MAINS *Image* PL/. TELL ME HOW TO DETERMINE WETHER THEY are connected at the reducin center or the non reducing cenetre ...

why p- dihydroxybenzene is polar ...

for rxtion PCl5 --- > <---- PCl3 +Cl2 in agesous phase Kc=4 in 2liter flask thr r 2.5 moles iniially of each PCl3 n Cl2 equilibrim conc of PCl5 is m gettin it as .8 check wher thats rite ...