Objective Questions

Questions (2006)

#	Question	Topic	Actions
701	Which of the following amino acids has a heterocyclic R group?	Practice Questions	View
702	The α-carbon of all the amino acids is a chirality center except for .	Practice Questions	View
703	Which of the following is correct for an amino acid solution when it is in the …	Practice Questions	View
704	When a disulfide linkage is formed, the compound containing this new linkage ha…	Practice Questions	View
705	Which of the following structures can polypeptides have?	Practice Questions	View
706	Which of the following is the first step in the determination of the primary st…	Practice Questions	View
707	What are enzymes?	Practice Questions	View
708	Which of the following may characterize the 'secondary structure' of proteins?	Practice Questions	View
709	Which of the following is the 'quaternary structure' of proteins concerned with?	Practice Questions	View
710	Which of the following protein structures does 'denaturation' destroy?	Practice Questions	View
711	Which of the following are capable of denaturing proteins?	Practice Questions	View
712	The monomeric units that make up peptides and protein polymers are .	Practice Questions	View
713	A zwitterion is	Practice Questions	View
714	A zwitterion has which of the following properties	Practice Questions	View
715	An aqueous solution of glycine is neutral because of the formation of :	Practice Questions	View
716	Which one of the following compounds form zwitterions?	Practice Questions	View
717	The pH at which the amino acid shows no tendency to migrate when placed in an e…	Practice Questions	View
718	The isoelectric point of a protein is	Practice Questions	View
719	Which of the following reactions is suitable for the preparation of α-amino aci…	Practice Questions	View
720	Glycine is	Practice Questions	View
721	Glycine reacts with nitrous acid to form :	Practice Questions	View
722	When glycine is heated, it forms	Practice Questions	View
723	Glycine is a unique amino acid because it	Practice Questions	View
724	Proteins are	Practice Questions	View
725	The five elements present in most naturally occurring proteins are :	Practice Questions	View
726	The nitrogen content of proteins can be quantitatively determined by	Practice Questions	View
727	Which of the following is the main structural feature of proteins?	Practice Questions	View
728	The linear arrangement of amino acid units in proteins is called :	Practice Questions	View
729	The primary structure of a protein refers to :	Practice Questions	View
730	The α-Helix is a common form of	Practice Questions	View
731	The α-Helix is held in a coiled conformation partially because of :	Practice Questions	View
732	The double helical structure of DNA is held together by	Practice Questions	View
733	Upon hydrolysis, proteins give	Practice Questions	View
734	Complete hydrolysis of proteins produces :	Practice Questions	View
735	Digestion of proteins involves	Practice Questions	View
736	Irreversible precipitation of proteins caused by heating is called :	Practice Questions	View
737	Precipitation or coagulation of proteins may be caused by	Practice Questions	View
738	Ninhydrin test is given by	Practice Questions	View
739	Which of the following tests is not used for testing proteins?	Practice Questions	View
740	A protein solution on warming with concentrated HNO3 may turn yellow. This test…	Practice Questions	View
741	A compound gives a positive Tollens' test but negative Ninhydrin test. It is	Practice Questions	View
742	Cycloalkanes have the same molecular formula as :	Practice Questions	View
743	Which of the following compounds will give cyclopropane on treatment with sodiu…	Practice Questions	View
744	Which of the following cycloalkanes is most reactive?	Practice Questions	View
745	Which of the following compounds will react most readily with concentrated sulf…	Practice Questions	View
746	A compound of formula C6H12 does not react with concentrated sulfuric acid. The…	Practice Questions	View
747	Which of the following molecules will decolorize bromine in carbon tetrachlorid…	Practice Questions	View
748	Cyclopropane reacts with concentrated HBr to give.	Practice Questions	View
749	Cyclobutane reacts with hydrogen in the presence of nickel catalyst at 200°C to…	Practice Questions	View
750	Cyclohexanol can be converted into cyclohexene by heating with	Practice Questions	View
751	The bond angle between carbon atoms in cyclohexane is	Practice Questions	View
752	Which of the cycloalkanes is not expected to have ring strain?	Practice Questions	View
753	Which of the following statements is false about glucose?	Practice Questions	View
754	Which of the following statements is false about cyclohexane?	Practice Questions	View
755	The most stable conformation of cyclohexane is the :	Practice Questions	View
756	What percentage of cyclohexane molecule is estimated to be in the boat form at …	Practice Questions	View
757	Uriedes are	Practice Questions	View
758	Uric acid on oxidation with alkaline KMnO4 forms :	Practice Questions	View
759	Diethyl malonate reacts with urea in the presence of sodium ethoxide to form	Practice Questions	View
760	A carbohydrate composed of three to ten sugar molecules is called a(n) :	Practice Questions	View
761	All chiral D-sugars rotate plane-polarized light :	Practice Questions	View
762	How many chirality centers are there in a 2-ketohexose?	Practice Questions	View
763	How many stereoisomers are possible for a 2-ketohexose?	Practice Questions	View
764	Which of the following statements best describes the difference between amylose…	Practice Questions	View
765	An aqueous solution of glucose behaves as an aldehyde because .	Practice Questions	View
766	Which of the following statements is false about α-D-glucose?	Practice Questions	View
767	Which of the following statements best describes the meaning of 'mutarotation'?	Practice Questions	View
768	In solution, glucose exists as .	Practice Questions	View
769	Anomers of D-glucopyranose differ in their stereochemistry at .	Practice Questions	View
770	Which of the following statements best describes the meaning of a 'glycoside'?	Practice Questions	View
771	Which of the following would give a positive Tollen's test?	Practice Questions	View
772	Which of the following is true about sucrose?	Practice Questions	View
773	Which term describes a sugar where one of the OH groups has been replaced with …	Practice Questions	View
774	Monosaccharides are classified according to :	Practice Questions	View
775	Which is a monosaccharide?	Practice Questions	View
776	Which is a disaccharide?	Practice Questions	View
777	Which of the following is not a monosaccharide?	Practice Questions	View
778	The designation D or L before the name of a monosaccharide	Practice Questions	View
779	The principal sugar in blood is	Practice Questions	View
780	Glucose cannot be classified as	Practice Questions	View
781	α-D-Glucose is different from β-D-glucose	Practice Questions	View
782	α-D-Glucopyranose is a(n) :	Practice Questions	View
783	The number of asymmetric carbon atoms in the α-D-glucopyranose molecule is :	Practice Questions	View
784	Which of the following statements is false about an aldohexose?	Practice Questions	View
785	All of the following monosaccharides give the same osazone except	Practice Questions	View
786	Mutarotation is a term related to	Practice Questions	View
787	The mutarotation of glucose is characterized by :	Practice Questions	View
788	Which of the following statements is false about glyceraldehyde?	Practice Questions	View
789	Which of the following carbohydrates is sweeter than sucrose?	Practice Questions	View
790	By approximately what factor is the sweetness of saccharin greater than that of…	Practice Questions	View
791	Which of the following statements is false about sucrose?	Practice Questions	View
792	The sugar that yields only glucose on hydrolysis is	Practice Questions	View
793	A reducing sugar will	Practice Questions	View
794	Which of the following carbohydrates is not a reducing sugar?	Practice Questions	View
795	Which of the following carbohydrates will not give a red precipitate of Cu2O wh…	Practice Questions	View
796	Which of the following compounds reduces Tollens' reagent?	Practice Questions	View
797	The reagent that can be used to differentiate an aldose and a ketose is :	Practice Questions	View
798	Starch	Practice Questions	View
799	The monosaccharide obtained by hydrolysis of starch is :	Practice Questions	View
800	Which of the following statements is false about cellulose?	Practice Questions	View

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Questions (2006)