The number of secondary hydrogens in 2, 2-dimethyl butane is :
8
6
4
2
D.
2
1° carbon is attached to one carbon atom. 2° carbon is attached to two carbon atoms and 3° carbon is attached to three carbon atoms.
Therefore, the hydrogen attached to 2° carbon are the one with one 2° carbon atom and two 2° hydrogen atoms.
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