The IUPAC name of the compound CH2CONHBr is :
1-bromoacetamide
ethanoyl bromide
N-bromo ethanamide
None of the above
Which of the following is a dynamic isomerism?
Metamerism
Geometrical isomerism
Tautomerism
Co-ordinate isomerism
The reason for the loss of optical activity of lactic acid when OH group is changed by H is that:
chiral centre of the molecule is destroyed
molecules acquires asymmetry
due to change in configuration
structural changes occurs
A.
chiral centre of the molecule is destroyed
When OH group of lactic acid is replaced by H then chiral carbon is lost.
Therefore, its optical activity is lost.
Vinyl chloride undergoes :
only addition reaction
only elimination reactions
both (a) and (b)
substitution reactions
Which of the following increases the octane number?
Branching of chain
Absence of double and triple bond
Non-cyclic alkanes
None of the above
An organic compound having molecular mass 60 is found to contain C = 20%, H = 6.67% and N = 46.67% while rest is oxygen. On heating it gives NH3 alongwith a solid residue. The solid residue give violet colour with alkaline copper sulphate solution. The compound is
CH3CH2CONH2
(NH2)2CO
CH3CONH2
CH3NCO