Recently Active Chemistry Questions

In alkaline soln K2Cr2O7 with 30% H2O2 gives a red brown compound A(K3CrO8).Find oxidn state of Cr in it. ...

*Image* Ques1) In the above figure, Compound A has two stereoisomers, but compounds B and C exist as single compounds. Explain. Ques2) *Image* The enantiomers of 1,2-dimethylaziridine can be separated even though one of the â ...

why PH5 does not exist ...

*Image* Compare the acidities of I and II ...

Which of the following statements about an sp hybridized carbon is FALSE a) It is divalent b) It forms bonds that are linear c) It has two p orbitals d) It always forms triple bonds to carbon Correct Answer: (d) Plz give the ...

silver bromide is solubel in which of th following? hypo NaCN ammonia all of these? ...

1. Cyclopropane a. Non-planar 2. Cyclobutane b. planar 3. Cyclopentane c. Least stable cyclo alkane 4. Cyclohexane d. Shows conformation ...

*Image* which of the above compound is most readily hydrated ...

In manufacture of iron a gas A is formed in zone of combustion of balst furnace.Gas A reacted with coke in zone of fusion to form another gas B.x moles of B react with iron at 200 C and 100 atm pressure to form C,one mole of ...

To calculate order of acid strength do we need to calculate order of strength of conjugate base OR order of stability of conjugate base ? [273] ...

Colloidal solns of glycine and alanine in acidic medium are prepared and mixed.The process which takes place on mixing is called ? ...

*Image* How many enantiomers and diastereomers are possible ? (a) 2 , 2 (b) 4, 4 (c) 4,2 (d) 2,4 Enatiomers to 2 hi hai, but dbt is with diastereomers. ...

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*Image* I THINK ALL R CORRECT ISN'T IT> ...

1. Statement-I : Positive catalysis increases the rate of reactions. Statement-II : Catalyst decreases the value of ΔGº. 2. Statement-I : Conc. HNO3 makes passive. Statement-II : Iron racets with HNO3 to form feric nitrate ...

1.which products can be formed by the action of Na and ethyl iodide mixture ??? ...

1. A cubic solid is made of two elements P and Q. Atom of Q are at the corners of the cube and P at the body centre. What is the formula of the compound ? What is the coordination numbers of P and Q. 2. Boiling point of water ...

1. The two electrodes of Pt fitted in a conductance cell are 1.5 cm apart while the cross - sectional area of each electrode is 0.75 cm2. What is cell constant in cm^-1? a) 0.2 b) 0.5 c) 2.0 d) 1.125 2. The rate of second ord ...

1.Holoform test is given by a) Ethanal b) Propanone c) Butanone d) Propan-2-ol 2. Which of the following are diamagnetic? a)[Ni(H2O)6]+2 b)[Ni(CN)4]-2 c) [Zn (NH3)4]+2 d) [Co(NH3)6]+3 3. Primary, Secondary and Tertiary amine ...

PARAGRAPH–Riemer-Tiemann reaction introduces an aldehyde group on to the aromatic ring of phenol,ortho to the hydroxyl group. This reaction involves electrophilic aromatic substitution. This is a general method for the synt ...

Q) When a methyl as well as phenyl grps are attached to same carbon atom, which shift takes place - 1,2-methyl or 1,2-phenyl shift and why? ...

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can solvay's process be used to prepare potassium carbonate? ...

Sulphurous acid acts as reducing as wel las oxidising agent..give reasons ...

*Image* QUESTION 2 >WHICH OF THE COMPOUND HAVE HIGHEST DIPOLE MOMENT? ...

How is entropy a state function? Explain ...

pls give structure of all isomers of the complex [ Co (NH3)5 (NO2) ] (NO3) ...

Ques 1) Water is brought under a pressure of 1 atm. When an electric current of 0.5 A from a 12 V supply is passed for 300 sec through a resistance in thermal contact with it, it is found that 0.789 g of water is vaporized. C ...

Why is Chalcocite roasted and not calcined in the recovery of copper ? ...