Recently Active Chemistry Questions

(1)when conc. H2SO4 was treated with K4[Fe(CN)6],CO gas was evolved .if we use dil. H2SO4 instead of conc. then the gas evolevd is ...

hybridiation is the chemists attemt to explain the observed molecular shape by constructing hybridised atomic orbitals with the appropriate inter-orbital angles.for the molecule,in which case deviation from nominal bond angle ...

1)Acetic acid to metyl bromide 2)ethyl chloride to butane 3)Aniline to bromobenzene ...

among the following substituted silanes the one which will give rise to cross linked silicon polymer on hydrolysis a)R4Si b)RSiCl3 c)R2Sicl2 d)R3sicl ...

IUPAC name of- [(NH3)5Co-NH2-Co(NH3)5](NO3)5 ...

(1) Which is the correct statement about S2 (g) molecule which forms above 1000°C? Molecular orbital theory of S2 is found to be similar to that of O2 molecule. (A) it is paramagnetic molecule having 2 unpaired electron. (b) ...

State whether the order of a chemical reaction can be negetive or not.-Explain . Cite an example . ...

Q1. What weight of KNO2 will be oxidised by 20ml of 0.2M KMnO4 in acidic medium? Q2. 7.45 g KCl was heated with excess MnO2 and H2SO4. The gas so produced was then passed through a solution of KI. Wt, of I2 liberated is _____ ...

Q1) Which has highest bp? a) 1% soln C6H12O6 b) 1% soln NaCl c) 1% soln ZnSO4 d) 1% soln (NH2)2CO Q2) Weight of water in 1L of 2M NaCl soln of density 1.117g/ml is a) 1117g b) 1000g c) 117g d) 883g ...

1 . *Image* 2. What is the product obtained on treating ethyl chloride with dry Ag2O ? ...

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giv reason *Image* ...

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Why the order of reactivity of halogens in halogenation of alkanes is: F2 > Cl2 > Br2 > I2 Plzz explain with full details..... ...

find the max no of hyperconjugation forms of structure *Image* tell how to find i m geting 7 but ans is diff ...

arrange the following in decresing order of stability *Image* ...

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*Image* Is the ans a or d ...

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In order to get maximum calorific output,a burner should have an optimum fuel to oxygen ratio which corresponds to 3 times as much oxygen as is required theoretically for complete combustion of the fuel.A burner which has bee ...

Why is the ignition temperature of white phosphorus v low? ...

Which od the following statement is correct for the hybrid orbitals (A) s + py + pz---->sp2 orbitals lie in the xy plane (B) ns + np3 + nd2 -----> results octahedral geometry of sp3d2 hybrid orbitals (C) None (D) All ...

1)A:PbS can be separated from ZnS be electrosatic separation method R:PbS is a good conductor and ZnS is a poor conductor of electricity 2)A: Addtion of solvent(volatile) to solute(non volatile) always lowers Vapor presure R: ...

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1)A 0.01M complex of CoCl2 & NH3 (molar ratio 1:4) is found to have effective molarity of 0.02M (evaluated frm colligative property). What is the formula of the complex ? A) [Co(NH3)4]Cl3 B) [Co(NH3)4Cl2]Cl C) [Co(NH3)5Cl]Cl ...

STATEMENT-1: 1-chloro-2-methyl butane may rotate the plane of PPLanti clock wise. and statement-2 :Two counter-rotating circularly polarized beams travel with different velocities through the chiral medium. ...

Why LiAlH4 can't reduce the double bond with conjugation with carbonyl group but it can reduce when phenyl group is attached at β carbon ?????? ...

Q1 *Image* Q2 *Image* Q3 Synthesise from benzene .. *Image* Q4 *Image* Q5 Identify best reducing agent in step2 *Image* ...

A)Na p)CCP B)Cu q)BCC C)Au r)12 D)K s)8 i thought we have to learn data only for NaCl...so whats all this ????or am i misinterpretting ? ...

can someone upload his 11th class chemistry practical work?? ...