Objective Questions

The linear arrangement of amino acid units in proteins is called :

The primary structure of a protein refers to :

The α-Helix is a common form of

The α-Helix is held in a coiled conformation partially because of :

The double helical structure of DNA is held together by

Upon hydrolysis, proteins give

Complete hydrolysis of proteins produces :

Digestion of proteins involves

Irreversible precipitation of proteins caused by heating is called :

Precipitation or coagulation of proteins may be caused by

Ninhydrin test is given by

Which of the following tests is not used for testing proteins?

A protein solution on warming with concentrated HNO3 may turn yellow. This test…

A compound gives a positive Tollens' test but negative Ninhydrin test. It is

Cycloalkanes have the same molecular formula as :

Which of the following compounds will give cyclopropane on treatment with sodiu…

Which of the following cycloalkanes is most reactive?

Which of the following compounds will react most readily with concentrated sulf…

A compound of formula C6H12 does not react with concentrated sulfuric acid. The…

Which of the following molecules will decolorize bromine in carbon tetrachlorid…

Cyclopropane reacts with concentrated HBr to give.

Cyclobutane reacts with hydrogen in the presence of nickel catalyst at 200°C to…

Cyclohexanol can be converted into cyclohexene by heating with

The bond angle between carbon atoms in cyclohexane is

Which of the cycloalkanes is not expected to have ring strain?

Which of the following statements is false about cyclohexane?

The most stable conformation of cyclohexane is the :

What percentage of cyclohexane molecule is estimated to be in the boat form at …

Uriedes are

Uric acid on oxidation with alkaline KMnO4 forms :

Diethyl malonate reacts with urea in the presence of sodium ethoxide to form

A carbohydrate composed of three to ten sugar molecules is called a(n) :

All chiral D-sugars rotate plane-polarized light :

How many chirality centers are there in a 2-ketohexose?

How many stereoisomers are possible for a 2-ketohexose?

Which of the following statements best describes the difference between amylose…

An aqueous solution of glucose behaves as an aldehyde because .

Which of the following statements best describes the meaning of 'mutarotation'?

In solution, glucose exists as .

Anomers of D-glucopyranose differ in their stereochemistry at .

Which of the following statements best describes the meaning of a 'glycoside'?

Which of the following would give a positive Tollen's test?

Which of the following is true about sucrose?

Which term describes a sugar where one of the OH groups has been replaced with …

Monosaccharides are classified according to :

Which is a monosaccharide?

Which is a disaccharide?

Which of the following is not a monosaccharide?

The designation D or L before the name of a monosaccharide

The principal sugar in blood is

Glucose cannot be classified as

Which of the following statements is false about glucose?

Which of the following statements is false about α-D-glucose?

α-D-Glucose is different from β-D-glucose

α-D-Glucopyranose is a(n) :

The number of asymmetric carbon atoms in the α-D-glucopyranose molecule is :

Which of the following statements is false about an aldohexose?

All of the following monosaccharides give the same osazone except

Mutarotation is a term related to

The mutarotation of glucose is characterized by :

Which of the following statements is false about glyceraldehyde?

Common table sugar is

Which of the following carbohydrates is sweeter than sucrose?

By approximately what factor is the sweetness of saccharin greater than that of…

Which of the following statements is false about sucrose?

The sugar that yields only glucose on hydrolysis is

A reducing sugar will

Which of the following carbohydrates is not a reducing sugar?

Which of the following carbohydrates will not give a red precipitate of Cu2O wh…

Which of the following compounds reduces Tollens' reagent?

The reagent that can be used to differentiate an aldose and a ketose is :

Starch

The monosaccharide obtained by hydrolysis of starch is :

Which of the following statements is false about cellulose?

Which of the following products is not derived from cellulose?

Coal-tar is the main source of :

Which of the following fractions of coal-tar distillation contains benzene?

Which of the following fractions of coal-tar distillation contains naphthalene?

What is the term used for isomers that are in rapid equilibrium?

Aromatic hydrocarbons are also called :

The best name for the following compound is :

The correct IUPAC name for the following compound is :

Which of the following statements are correct concerning benzene?

Which of the following statements is incorrect about benzene?

Which of the following statements about benzene is correct?

The delocalized π system in benzene is formed by a cyclic overlap of 6 orbitals.

Aromatic molecules contain π electrons.

Which of the structures below would be aromatic?

Which of the following is aromatic?

Which of the following is not a correct statement about the electrophilic subst…

What purpose does FeCl3 serve in the electrophilic aromatic substitution reacti…

Which of the following is not a correct statement concerning the Friedel-Crafts…

What is the major organic product of the reaction between benzene and isobutyl …

Which of the following statements are false about benzene?

Which statement about the structure of benzene is not true?

The carbon atoms in a benzene ring are :

The C–C bond length in benzene is

Characteristic reactions of aromatic hydrocarbons are initiated by

Phenol on distillation with Zinc dust gives

Which of the following statements is false about toluene?