IUPAC name of the following compound
N, N- dimethylcyclopropane carboxamide
N-methylcyclopropanamide
cyclopropionamide
None of the above
Sodium formate on heating gives
oxalic acid and H2
sodium oxalate and H2
sodium oxalate
CO2 and caustic soda
Products of the following reaction
CH3C C.CH2CH3 .... are
CH3CHO + CH3CH2CHO
CH3COOH + CH3COCH3
CH3COOH + HOOC.CH2CH3
CH3COOH + CO2
Which one of the following compounds is most acidic?
Cl - CH2 - CH2 - OH
B.
Phenols are much more acidic than alcohols, due to the stabilisation of phenoxide ion by resonance.
Phenoxide ion is stabilized due to following resonating structures :
Ortho nitrophenol is most acidic because in it -NO2 electron attracting group is attached on ortho position which helps in stabilising of negative charge on the oxygen of phenoxide ion.Hence, due to this reason acidic character of phenol is increased, while on attachment of -CH3 group (electron donating group) acidic strength of phenol is decreased in cresol due to destabilisation of phenoxide ion.
Which one of the following is expected to exhibit optical isomerism? (en = ethylenediamine)
cis-[Pt (NH3)2Cl2]
trans-[Co (en)2 Cl2]
trans- [Pt (NH3)2Cl2]
cis-[Co(en)2Cl2]