Which is more basic oxygen in an ester?
Carbonyl oxygen, α
Carboxyl oxygen, β
Equally basic
Both are acidic oxygen
Sometimes explosion occurs while distilling ethers. It is due to the presence of
peroxides
oxides
ketones
aldehydes
The concentration of an organic compound in chloroform is 6.15 g per 100 mL of solution. A portion of this solution in a 5 cm polarimeter tube causes an observed rotation of -1.2°. What is the specific rotation of the compound?
+12
-3.9
-39
+61.5
Identify, which of the below does not possess any element of symmetry?
(+) and (-) tartaric acid
Carbon tetrachlorid
Methane
Meso- tartaric acid
Which of the following fraction of coal tar distillation is obtained at 270-360° C ?
Light oil
Middle oil
Green oil
Heavy oil
Corrosive sublimate (HgCl2) can be used distinguish between
formic acid and acetic acid
acetaldehyde and butanone
formaldehyde and propanone
All of the above
The IUPAC name of crotonaldehyde is
butenaldehyde
butanal-1
but-2-en-1-al
prop-2-en-1-ol
C.
but-2-en-1-al
The structural formula of crotonaldehyde is
Which of the following compounds is optically active?
Butanal
Butanol
Butan-2-ol
2-methyl propan-2-ol