CBSE
Multiple Choice QuestionsThe theory of enzyme mechanism that suggests a rigid, in flexible molecules is:
coenzyme model.
induced-fit model.
lock and key model.
substrate specific model.
The chirality of the compound
R
S
Z
E
Which of the following pair will give positive tollen's test?
Glucose, sucrose
Glucose, fructose
Hexanol, acetophenone
Fructose, sucrose
Which functional group participates in disulphide bond formation in proteins?
Thiolactone
Thiol
Thioether
Thioester
which of the following reactions of glucose can be explained only by its cyclic structure?
Glucose forms penta acetate.
Glucose reacts with hydroxyl amine to form an oxime.
Penta acetate of glucose does not react with hydroxylamine.
Glucose is oxidised by nitirc acid to gluconic acid.
Which of the following amino acid is optically inactive?
Phenyl alanine
Glycine
Glutamic acid
Asparagine
Glucose has difference from fructose in that it:
does not undergo hydrolysis
gives silver mirror with Tollen's reagent
monosaccharide
none of the above
Aniline in a set of reactions yielded a product D
The structure of the product D would be
C6H5CH2NH2
C6H5NHCH2CH3
C6H5NHOH
C6H5CH2OH
The sum of the number of primary alcoholic group present in open chain structure of glucose and fructose are:
4
5
3
2
The night blindness and pernicious anaemia are causes due to deficiency of:
Vitamin B6 and vitamin B12, respectively
Vitamin A and vitamin B12 respectively
Vitamin C and vitamin K, respectively
Vitamin B2 and vitamin B12 respectively
