Recently Active Chemistry Questions

*Image* Question no. 5 *Image* Question 14 and 15 ...

the metals K and Mg both forms oxide but nly Mg forms nitride , when both burn in air ?..why?? 2) is the solubility in 1a grp increases and in 2a grp decreases???if so y?? ...

can anyone pls hlp me out with the mechanism of converting acetoacetic ester to glycine using HNO2 ...

when Ph-H is nitrated using m.a.then i=4,what is the role of conc.H2SO4 here? ...

Write in increasing order the values of Heat of Hydrogenation of these compounds. Explain PLZ *Image* ...

Only a substitution product is obtained when the compound below is treated with sodium methoxide. Explain why an elimination product is not obtained? Compound is 1-bromo-2,6-dimethylcyclohexane *Image* ...

Are the following topics there in JEE syllabus? 1) Preparation of Amino acids 2) Reactions of Amino acids 3) Epimerisation 4) Ascending and Descending of sugar series. ...

q1)Why does -C6H5 have - I effect even though it has delocalized electrons q2) why does vinyl cation have - I effect even though it has a doublr bond.Pls explain ...

In the base-catalysed hydrolysis of amides, they undergo nucleophilic addition of OH- and finally form acetate. In hoffmann degradation, we use OH- (of an alkali) where it extracts a proton from the -NH2 group. Why is the act ...

Please Explain the Relative Stabilities of these compounds and arrange it in decreasing order. Also, Please Explain the causes. *Image* ...

why alkali metals Li , Na , K cannot b stored in water???? and what is meant by thermal stability??? ...

My book says that we can distinguish between 2 hydroxy butanoic acid (A) and 3 hydroxy butanoic acid (B) by haloform tests. It says that B gives positive haloform test. I am fine with it. I don't get why A doesnot give positi ...

Why do the materials which are denser react slowly? ...

which of the following two are chiral molecules. mark all the asymmetric carbons in both. 1. *Image* 2. *Image* ...

An element 'A' forms 2 oxides , the weight ratio composition in them, A:O =[ x : y ]in the first oxide and... [ y : x ] in the second oxide. If the equivalent weight of 'A' in the first oxide is 10.33 , calculate the equivale ...

why we use Ni as catalyst in sabatier senderens reaction???can we use anyother than these y?? ...

Chlorination of methane involves two kinds of steps: one initiation step and two propagation steps. but while calculating the enthalpy of the whole chlorination of methane , only the enthalpies of two propagation steps are ad ...

How to read this......... *Image* ...

plz help me out in these doubts..: 1. how can u explain the concept dat when a reaction shifts in the forward reaction, the greater concentration of products are formed.. and vice versa.... why does this happen.... plz tell m ...

1)Is there any case where a carbocation re-arranges through 1,2 -CH3 migration even when there is an alpha hydrogen present (to carbocation)? 2)How do we name cyclohexene as E/Z configuration? It is symmetric on both sides of ...

how to calculate distance between neighbouring molecules ...

$Q:$\Rightarrow $ Which one is more acidic from, $sp$ and $sp_{3}.$ ...

NH3 -- 107.5 PH3 -- 93.5 AsH3 -- 92 SbH3 -- 91.5 AsH3 -- 90 The H-E-H bond angle is expected to be a tetrahedral ideal of 109.5°, but since lone pairs repel more than bonding pairs, the actual angle would be expected to be s ...

What are the 3 products obtained in the following reaction? I got 2 but can't get the third one :(. Answer is given - *Image* *Image* Can someone explain the mechanism for this product? ...

Heptalene has two fused 7-membered rings and is not flat. Its twisted structure makes it chiral, but heptalene itself cannot be resolved because the two forms rapidly interconvert PROB: Please elaborate the highlighted portio ...

Q1 Define and differentiate between the two terms below: Standard reduction/oxidation potential & Discharge potential Q2 Corrosion is an example of electrolysis but any electrolysis reaction requires a minimum E.M.F. across t ...

can ne1 plz explain me the concept the concept of Buffer solutions..... hw to determine....the buffer of a particular solution..... ...

i have a doubt regarding why does 2-methyl propanol not give the iodoform test inspite of it being a methyl alcohol and how to recognise which methyl alcohol/ oxygen containing compound will not give iodoform test???? ...

Q- how many coulombs of charge is present on 1-g N-3 ion ? ...

a closed container of volume 0.02m3 contains mixture of neon and argon gases at a temperature 27°C.pressure 1*10^5.the total mass is 28g.if gram molecular weight of neon and argon is 20 and 40 find masses of indiviual gases. ...