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
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
B.
(NH2)2CO
Element | Percentage | Simple Ratio | |
C | 20.0 | = 1.66 | = 1 |
H | 6.67 | = 6.67 | = 4 |
N | 46.67 | = 3.33 | = 2 |
O | 26.66 | = 1.66 | = 1 |