Recently Active Chemistry Questions

*Image* Can this give positive test with 1) NaHCO3 & 2) NaNO2 / H c l , β -napthol / OH- ONE OR MORE THAN ONE OPTION MAY BE CORRECT ...

A metal X is prepared by electrolysis of fusd chloride.It reacts with hydrogen to form a colorless solid from which hydrogen is released on treatment with water. a)Al b)Ca c)Cu d)Zn ...

Q1 BN can be obtained by reaction of boron with a)NH3 b)N2 c)KCn d)KNO3 Q2 WHich of the following doesnt give N2 on heating a)NH4Cl b)(NH4)2Cr2O7 c)NaN3 d)NaNH2 I ma sure abt b) but what abt other options ? Q3 Which of the fo ...

in periodic table,to find out the valency of "substance hydride",they have done,in which substance the valency comes to "5",they are deducting the number from "8" and the valency becomes "3". my question is "is this rule can ...

You are given the reaction NH2 + 3Cl2 → NCl2 + 3HCl Vol of NH3 required for reacting with a litre of Cl2 will be (a) 9 litres (b) 6 litres (c) 13 litres (d) None ...

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The Electronegativity of 2 elements A and B are 2,4 Whats the % ionic character of A-B bond ...

Arange the following in order of dec bond angle NF3,PF3,NH3,PH3 ...

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Write down chemical eqns that occur when mixture of calcium phosphate,silica,coke is heated in electric furnace ...

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Which of the following will give acidic solutoin 1) Na2CO3 2) H2S 3) CuSO4 4) NaBr ...

Q1 *Image* Q2 Does *Image* give Iodoform Test? [questio edited.. see below] Q3 Give mechanism for - *Image* ...

COLUMN - I COLUMN -II (A) If S.O.P of a substance is (P) Oxiadtion of substance is exists b/w -1.23 to -0.81 V not possible (B) If S.O.P of substance is (Q) Possible only in acidic exists b/w -0.81 V to -0.40 V medium (C) If ...

At 200*C PCl5 dissociates as follows: PCl5(g) + PCl3(g) +Cl2(g) It was found that the equilibrium vapours are 62 times as heavy as hydrogen.Find the degree of dissociation of PCl5 at 200*C.. ?? ...

When HOCl is added to CH *Image* CH , CH2Cl *Image* CHO is formed. But how is HOCl added to CH3C *Image* CH ? I'm not sure about propyne as it is unsymmetric and whether Markonikoff's rule is used or not. How is this reaction ...

Q1 Find out volume strength of H2O2 to eb added (V=1L) in an incomplete titration mixture of NaHC2O4 with NaOH.If mixture has ben prepared by mixing 500g of NaHC2O4 in 2L,0.5M NaOH.Assume H2O2 is st. reducing agent Q2 Solid N ...

CH3-CO-CH2-CH2-CH2-CO-CH3 + OH- + Δ → ? ...

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STATEMENT-1 : Simplest formula of a CCP unit cell of Buckminster fullerenes in which all the T-voids and O-voids are occupied by K is K3C60. and STATEMENT-2 : Simplest formula is KC20. 1. Statement-1 is True, Statement-2 is T ...

these all are not my dbts...just encountered tehse reactions here and there...I will continue posting more when I find them... WARNING:These questions are a lot above regular Jee level...so don't try them if u r not good enuf ...

2ZnCL2 + K4[Fe(CN)6J —, Zn2[Fe(CN)6] + 4KCL I had this doubt becoz Zn is lower than K in reactivity series ...

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N2 + 3 H2 → (equilibrium) 2NH3 is a gaseous phase equilibrium reaction taking place in a 5-litre flask at 400 K. For this choose the correct alternative : A) Kc = Kx B) Kc = 25 Kx C) Kx = 25 Kc D) Kc = 5 Kx ...

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*Image* explain the reason why which product will be major 1,2 or 1,4 abhi, please do not answer this is my doubt ...

I am little confused about the effect Hyperconjugation has on the compounds. I would like to know how does hyperconjugation work? How does it affect the stability and acidity of a compound? and when should we consider its eff ...

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