The two forms of glucopyranose obtained from solution of D-glucose are called

  • Isomers

  • Anomers

  • Epimers

  • Enantiomers

Sucrose on treatment with conc. HCl produces:-

  • Glucose

  • Fructose

  • Glucose + Fructose

  • Maltose

During the process of digestion, the proteins present in food materials are hydrolyzed to amino acids. The two enzymes involved in the process 

Proteins →Enzyme (A) Polypeptides  →Enzyme  (B) Amino acids are respectively

  • amylase and maltase

  • diastase and lipase

  • pepsin and trypsin

  • invertase and zymase

Phospholipids are esters of glycerol with

  • one carboxylic acid residue and two phosphate groups

  • three phosphate groups

  • three carboxylic acid residues

  • two carboxylic acid residues and one phosphate groups

Compound that gives positive Fehling's solution test is : 

  • Sucrose

  • Glucose

  • Fat

  • Protein

Which of the following is the sweetest sugar?

  • Sucrose

  • Glucose

  • Fructose

  • Maltose

a-D-(+)-glucose and b-D-(+)-glucose are

  • Anomers

  • Epimers

  • Enantiomers

  • Geometrical isomers

The couplings between base units of DNA is through : 

  • Hydrogen bonding

  • Electrostatic bonding

  • Covalent bonding

  • Van der waal's forces

The segment of DNA which acts as the instrumental manual for the synthesis of the protein is 

  • nucleotide

  • ribose

  • gene

  • nucleoside

Which of the following structures represents the peptide chain ?

  •  

  •  

  •  

  •  

On hydrolysis of starch, we finally get

  • glucose

  • fructose

  • Maltose

  • Both 1 and 3

The correct option about the presence of  H-bond in nucleotides is: 

  • A-T, G-C

  • A-G, T-C

  • G-T, A-C

  • A-A, T-T

The helical structure of proteins is established by

  • dipeptide bonds

  • hydrogen bonds

  • ether bonds

  • peptide bonds

The a-D-glucose and b-D-glucose differ from each other due to difference in carbon atom with respect to its

  • conformation

  • configuration

  • number of OH-groups

  • size of hemiacetal ring

Glycolysis is

  • oxidation of glucose to pyruvate

  • conversion of glucose to haem

  • oxidation of glucose to glutamate

  • conversion of pyruvate to citrate

Sucrose in water is dextrorotatory, αD=+66.4° when boiled with dil.HCl, the solution becomes leavorotatory, αD=-39.9°. In this process the sucrose breaks into

  • L-glucose + D-fructose

  • L-glucose + L-fructose

  • D-glucose + D-fructose

  • D-glucose + L-fructose

Which is not a true statement?

  •  a-carbon of a-amino acid is asymmetric except glycine

  • All proteins are found in L-form

  • Human body can synthesis ll proteins they need

  • At pH = 7 both amino and carboxylic groups exist in ionised form

Which of the following is correct statement ?

  • Starch is a polymer of a-glucose

  • Amylose is a component of celulose

  • Proteins are composed of only one type of amino acid

  • In cyclic structure of fructose, there are 6 carbons and one oxygen atom

Glucose molecule reacts with 'X' number of molecules of phenylhydrazine to yield

osazone. The value of 'X' is

  • four

  • one

  • two

  • three

The number of molecules of ATP produced in the lipid metabolism of a molecule of

palmitic acid is

  • 130

  • 36

  • 56

  • 86

An amine among the following that acts as hormone is : 

  • Thyroxine

  • Oxypurin

  • Insulin

  • Progesterone

The hormone that contains iodine is : 

  • Insulin

  • Testosterone

  • Adrenaline

  • Thyroxine

Chemically considering digestion is basically

  • anabolism

  • hydrogenation

  • hydrolysis

  • dehydrogenation

Which one of the following is a peptide hormone?

  • Glucagon

  • Testosterone

  • Thyroxin 

  • Adrenaline

Among the following  non-reducing sugar is : 

  • Glucose

  • Fructose

  • Sucrose

  • Galactose

When glucose is reacted with phenyl hydrazine then osazone is formed. In this reaction how many phenyl hydrazine molecules are used ?

  •   1

  •   2

  •   3

  •   4

Which type of amino acid is lysine ?

  •  b - amino acid

  • Acidic

  • Basic

  • Neutral

Mixture of glucose and water can be separated by:-

  • Distillation

  • Crystallisation

  • Sublimation

  • All of the above

Glucose and Mannose are

  • C1 epimers

  • Anomers

  • C2 epimers

  • C4 epimers

Number of Chiral carbon atoms in cyclic b-D(+)-glucose is

  • 5

  • 4

  • 3

  • 2

0:0:1


Answered Not Answered Not Visited Correct : 0 Incorrect : 0

Practice Chemistry Quiz Questions and Answers