Multiple Choice QuestionsWhich of the following is a ketohexose?
Glucose
Sucrose
Sucrose
Ribose
C.
Sucrose
The term hexose refers to the presence of six carbon atoms and term keto shows the presence of ketonic group. Thus, the compound which contains 6 C atoms and one group is called ketohexose. Among the given only glucose and fructose are six C compounds. Out of them, glucose contains an aldehyde group while fructose contains a ketonic group. Hence, the example of ketohexose is fructose.
Reaction of PCl3 and PhMgBr would give
bromobenzene
chlorobenzene
triphenylphosphine
dichlorobenzene
Hydroboration oxidation of 4-methyl octene would give
4-methyl octanol
2-methyl decane
4-methyl heptanol
4-methyl-2-octanone
When ethyl alcohol is heated with conc. H2SO4, the product obtained is
CH3COOC2H5
C2H2
C2H6
C2H4
Anisole is the product obtained from phenol by the reaction known as
coupling
etherification
oxidation
esterification
Ethylene glycol gives oxalic acid on oxidation with
acidified K2Cr2O7
acidified KMnO4
alkaline KMnO4
periodic acid
A Wittig reaction with an aldehyde gives
ketone compound
a long chain fatty acid
olefin compound
epoxide
Maleic acid and fumaric acid are
position isomers
geometric isomers
enantiomers
functional isomers
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