Recently Active Chemistry Questions

What effect does electronegativity difference between bonded elements have on bond strength ? ...

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Q.Indicate the type of isomerism exhibited by the following complexes,their number and draw the structures for the isomers: 1) [Co(NH_{3})_5(NO_{2})](NO_{3})_{2} (The ans given is 10,and it also states that there is geometric ...

though chlorine is a very usefull and strong bleaching agent , yet it can not decolourise an ordinery pencil mark !!! why does chlorine show this peculiar property ?? ...

Pick out the orbital(s) with maximum number of nodal planes A. 3dxy B. 4dz2 c. 4dxy D. 2px ...

**I am hiding the solved questions....** 1)Hydrolysis of PI3 gives ?? 2)Decomposition of H2O2 is lowed down by addn of ?? 3)compound which is used in space vehicels to absorb CO2 and liberate O2 a)NaOH b)NaO c)Na2O2 d)CaO and ...

2CH3COO-→C2H6+2CO2 +2e If current effiicency=80%,what vol of gas is produced at 27C and 740 torr if current of 0.5 A is passed for 96.45 min ...

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Statement 1:- Molecules that are non- superimposable on their mirror images r chiral Statement 2:- All chiral molecules hav chiral centres ...

A. PHOTOELECTRIC EFFECT P. INDUCED REACTION B. NUCLEAR FISSION Q.SPONTANEOUS REACTION C. β-DECAY R.EXOGERIC(Q>0)REACTION D. NUCLEAR FUSION S. CHAIN REACTION T. INSTANTANEOUS REACTION ...

1...explain---all cis -trans are geometrical isomers but all geometrical isomers are not cis -trans .........give examples....... ...

COLUMN1. A) CH3-CHBr-CD3 on treatment wid alcoholic KOH gives CH2=CH-CD3 as a major product. B) Ph-CHBr-CH3 reacts faster than Ph-CHBr-CD3 C) Ph-CH2-CH2Br on treatment wid C2H5OD/C2H5O- (O -ve) gives Ph-CD=CH2 as the major pr ...

What's the Major Product in the below reaction ?? *Image* ...

Enthalpy of formation of alkali metal halide is -ve For fluride enthalpy bcome less -ve down the group but for others opposite is true source NCERT wHY THIS DIFFERNCE ARISES? ...

*Image* in the presence of Alcl3 / Δ / oil bath ...

q1 Total ionic strength of a solution of 0.5M MgSO4,0.1M AlCl3,0.2M (NH4)2SO4 q2 On cooling 50g of solute gets precipitated from 400g of a 20% solution by weight.What is percentage concentration of remaining solution q3 If ra ...

Q18 The final product B in the following reaction CH3CH2CH = CH2 + NBS,hν + (C6H5CO2)2 → A + CH3SNa + CH3OH → B is a) Methyl 1-methylallyl sulphide b) Allyl methyl sulphide c) n-Butyl methyl sulphide d) Diallyl sulphide ...

1)13.44 g cucl2 is dissolved in 1 kg of water. what is the elevation in boiling point?kb=0.52 kg k/mol ans-0.16 2)which of the following statements are correct? a)the coordination no. of each type of ion in cscl is 8. b)metal ...

Q. The decomposition of N2O5 is 1st order. 2N2O5 ---> 4NO2 + O2 is 1st order. If the rate constant is 5.90 x 10-4 s-1, what is the half life of this reaction? will u use t0.5 = 0.693/K or t0.5 = 0.693/2K ...

Two beakers one containing 20ml of a .05M aqueous solution of a non volatile non electrolyte and the other contains 20ml of .03MNaCl solution , are placed side by side in a closed enclosure.what are the volumes in the two bea ...

*Image* Ques 3) Which one of the following has a dipole moment significantly different from zero ?? *Image* Ques 4) Which one of the following has smallest heat of combustion ? Ques 5)Among xylenes, which is thermodynamically ...

A hydride of boran contains 5.94g of B and 1.8 g of hydrogen then the emperical formula of boron hydride would be____ a)B3H6 b)B2H6 c)BH3 d)B4H10 ...

1 g of a moist sample of KCl And KClO3 was dissolved in water and made up to 250 ml. .25 ml of the solution was treated with SO2 to reduce the chlorate to chloride and excess SO2 was removed by boiling . The total chloride wa ...

Which is Bronsted-Lowry acid as well as Arrhenius acid ? H2 , HCO3- , NH3 or NH2- ? Ans : HCO3- ...

*Image* (acidic/basic;cationic/anionic) *Image* *Image* *Image* *Image* ...

Q1. When we take high concentration of strong base in a non-ionising solvent, bimolecular mechanism are favoured and predominant mechanism is (a) SN2 (b) E2 (c) AN1Ar (d) E1CB Q2. In the reaction 2-Bromopropane ------> (Na ...

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I dont have answers for even a single question...so I request all for a healthy and fruitful discussion [1] *Image* ...

if there are 2 containers A and B A-contains gases c n d B-contains gases c pressure in B is greater than A will th gas d move from A to B?? ...

How many litres of SO2 has to be passed through HClO3 to reduce 16.9 g of it to HCl.. Ans 13.44 ...