Recently Active Chemistry Questions

state true false: 1)H=G+TS {where symbol have their usual meanings} 2)CuCl2 reacts with H2S to form a mettalic sulphide!!! 3)pka+ pkb=pkw at all temperatures ...

*Image* For complete reduction,what is d value of X ...

Which is the correct order of bond lengths in methyl mercaptan (a)C-S > C-H > S-H (b)C-S >S-H > C-H (c)S-H >C-S > C-H (d) none ...

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Question 1 *Image* MY ANSWER: C ------------------------------------------------------------------------------------------------ Question 2 *Image* ----------------------------------------------------------------------------- ...

Which of the following carbocation can be easily isolated ? (A) (Me)3C+ (B) *Image* + (C) Ph-CH2 + (D) H2C=CH--CH2 ...

S1 : The reaction of o-bromoanisole gives only meta-aminoanisole on reaction with KNH2 in liquid ammonia. S2 : The above reaction is an example of elimination-addition mechanism. ...

*Image* The above compound + Q 1. B2D6/CH3COOD Q 2. B2H6/D2SO4/D2O Q 3. B2D6/dil H2SO4 ...

S1 : A mixture of primary,secondary and tertiary amines is formed in good yield by heating carbonyl compounds with NH3 and H2 in presence of a catalyst. S2 : The eqb. constant for addition of NH3 to all carbonyl compounds are ...

*Image* (i) CH2PPh3 (ii) CH2I2/Zn -----> ?? ...

CH3 O | || CH3--C----C----NH2 + Br2/KOH/Δ -----> ?? | Br IS this the final product -- CH3 | CH3C=NH ...

*Image* ** not a dbt... ...

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*Image* Ans : V<III<I<II<IV PLEASE EXPLAIN !!! ...

This may be a silly question......but since I'm a beginner in organic chemistry,I need the answer to this simple question : HOW TO REMEMBER THE LIST OF COMPOUNDS HAVING +I OR -I AND +R OR -R EFFECTS ???? ALSO HOW DO I REMEMBE ...

1) FeCl3 +SO2 → 2)Fe2O3 +NaOH +Cl2 → 3)CuSO4.5H2O +KCN(excess)→ will add more later.... ***not my doubts....just some exception reactions *** ...

1)Nitrogen monoxide, NO, reacts with hydrogen, H2, according to the following equation: 2 NO (g) + 2 H2 (g) → N2 (g) + 2 H2O (g) If the mechanism for this reaction were, 2NO(g) + H2(g) N2(g) + H2O2(g) (fast) H2O2(g) + H2(g) ...

A container has oxygen and hydrogen. Some weight of gases escape. Same weight of methane as that of escaped gases is added to the container so that the total pressure of the mixture remains same. Then what percent of the esca ...

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1. Which of the following statements is not correct ? (a). Pure para hydrogen can be obtained by cooling ordinary hydrogen to about 20 K. (b). The ratio of ortho and para hydrogen at 300 K and above is 3 : 1. (c). The ratio o ...

1. Which of the following statements is false ? (a) Saline hydrides are stoichiometric compounds. (b) Ionic hydrides are crystalline,non-metallic and non-conducting in solid state. (c) The melts of ionic hydride are non-condu ...

Q1 T/F [Co(NH3)6]Cl3 gives 2 moles of Cl– which react with AgNO3 to form 2 moles of AgCl. Q2Which of the following exist as dimer (A) Al(CH3)3 (B) CH3Li (C) Si(CH3)4 (D) Be(CH3)2 Q3Formation of complex involves (A) exotherm ...

*Image* + (i) Hg(OAc)2/HOH/THF ---> ?? (ii) NaBH4/NaOH There will be anti addition of water or syn addition ?? ...

Vapour Pressure of 0.01molal sol.n of a weak base BOH in water at 200C is 17.536mmHg. Calculate "Kb" for the base, given that Aqueous Tension at 200C is 17.540mmHg. (Also assume the base's molarity & molality to be the same.) ...

Is there any formula to calculate structural isomers,geometric isomers(cis-trans) like we have studied for optical isomers ? ...

Q1. Zero magnetic moment of K2NiF6 is due to (a) Low spin Ni(IV) d6 (b) High spin Ni(IV) d6 (c) Low spin/ high spin not applicable (my option) I feel that question is wrong as given in JD LEE that the compound is intensely ye ...

S1 : For the reaction : O3 \Leftrightarrow O2 + O O + O3 \rightarrow 2O2 (slow) --------- 2O3 \Leftrightarrow 3O2 The molecularity of first step is 1 and that of second step is 2. S2 : O(g) is an intermediate and rate of reac ...

A hypothetical reaction, 2X + Y2 ------> 2XY X + X \Leftrightarrow X2 (fast) X2 + Y2 \Leftrightarrow 2XY (slow) then the order of the reaction is A. 1 B. 2 C. 3 D. undefined ...

Q1 how many isomers?? *Image* Q2 acidic order? *Image* ...