Biomolecules PYQs Set 5 (PDF)

Set 5 of 12 · Questions 121-150 of 335

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Mere Teacher · Previous Year Questions JEE Main Chemistry · Biomolecules · Set 5 (Q121-150)
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121. $The incorrect statement about Glucose is :$ (1) $Glucose is soluble in water because of having aldehyde functional group$ (2) $Glucose remains in multiple isomeric form in its aqueous solution$ (3) $Glucose is one of the monomer unit in sucrose$ (4) $Glucose is an aldohexose$ 122. $Match List I with List II List - I A. α - Glucose and α - Galactose B. α - Glucose and β - Glucose C. α - Glucose and α - Fructose D. α - Glucose and α - Ribose List - II I. Functional isomers II. Homologous III. Anomers IV. Epimers Choose the correct answer from the options given below:$ (1) $A-IV, B-III, C-I, D-II$ (2) $A-III, B-IV, C-I, D-II$ (3) $A-IV, B-III, C-II, D-I$ (4) $A-III, B-IV, C-II, D-I$ 123. $The presence or absence of hydroxy group on which carbon atom of sugar differentiates RNA and DNA.$ (1) $1^{s t}$ (2) $2^{n d}$ (3) $3^{r d}$ (4) $4^{t h}$ 124. $Deficiency of vitamin B_{1} causes the disease$ (1) $convulsions$ (2) $beri‐beri$ (3) $cheilosis$ (4) $sterility$ 125. $Match List-I with List-II. List I (A) Sucrose (B) Lactose (C) Maltose List-II (I) β -D-Galactose and β -D-Glucose (II) α -D-Glucose and β -D-Fructose (III) α -D-Glucose and α -D-Glucose Choose the correct answer from the options given below:$ (1) $(A)-(III), (B)-(II), (C)-(I)$ (2) $(A)-(III), (B)-(I), (C)-(II)$ (3) $(A)-(I), (B)-(III), (C)-(II)$ (4) $(A)-(II), (B)-(I), (C)-(III)$ 126. $Amino acids containing heterocyclic ring are (i) Histidine (ii) Valine (iii) Arginine (iv) Proline$ (1) $(i), (iv)$ (2) $(ii), (iii)$ (3) $(i), (iii)$ (4) $(ii), (iv)$ 127. $C_{12} H_{22} O_{11} + H_{2} O Sucrose \to Enzyme A C_{6} H_{12} O_{6} Glucose + C_{6} H_{12} O_{6} Fructose C_{6} H_{12} O_{6} \to Enzyme B 2 C_{2} H_{5} OH + 2 CO_{2} In the above reactions, the enzyme A and enzyme B respectively$ (1) $Amylase and Invertase$ (2) $Invertase and Amylase$ (3) $Invertase and Zymase$ (4) $Zymase and Invertase$ 128. $(peptide bond).Which statement is incorrect about peptide bond?$ (1) $C - N bond length in proteins is longer than usual bond length of N - C bond.$ (2) $Spectroscopic analysis shows planar structure of - C - N H ‐group. 011$ (3) $C - N bond length in proteins is smaller than usual bond length of C‐N bond.$ (4) $None ofthe above$ 129. $Which of the following compounds is a constituent of the polymer ?$ (1) $N-Methyl urea$ (2) $Formaldehyde$ (3) $Methylamine$ (4) $Ammonia$ 130. $Which of the following bases are present both in DNA and RNA?$ (1) $C, D$ (2) $B, C$ (3) $A, B$ (4) $A, C$ 131. $Glucose on oxidation with bromine water yields gluconic acid. This reaction confirms presence of$ (1) $six carbon atoms linked in straight chain$ (2) $secondary alcoholic group in glucose$ (3) $aldehyde group in glucose$ (4) $primary alcoholic group in glucose.$ 132. $DNA molecule contains 4 bases whose structure are shown below. One of the structures is not correct, identify the incorrect base structure.$ (1) (2) (3) (4) 133. $The structure of α -D-fructofuranose is$ (1) (2) (3) (4) 134. $In a protein molecule various amino acids are linked together by$ (1) $peptide bond$ (2) $dative bond$ (3) $α ‐glycosidic bond$ (4) $β ‐glycosidic bond.$ 135. $The product(s) formed when glucose reacts with a strong oxidising agent like HNO_{3} is/are$ (1) $COOH (CHOH)_{4} COOH$ (2) $CO_{2}, H_{2} O$ (3) $COOH (CHOH)_{4} CHO$ (4) $CO, CO_{2}, H_{2} O$ 136. $Sulphur containing amino acids of the following are$ (1) $A, D$ (2) $A, C$ (3) $B, C$ (4) $B, D$ 137. $Consider the following structures Which of the pairs represent D and L -fructose, respectively?$ (1) $II and I$ (2) $I and III$ (3) $III and IV$ (4) $II and IV$ 138. $The correct observation in the following reactions is : Sucrose \to Cleavage (Hydrolysis) Gly cos idic bond A + B \to reagent Seliwanof f^{’} s ?$ (1) $Gives no colour$ (2) $Formation of red colour$ (3) $Formation of violet colour$ (4) $Formation of blue colour$ 139. $For ‘invert sugar’, the correct statement(s) is(are) (Given : specific rotations of (+)-sucrose, (+)-maltose, L-(-)-glucose and L-(+)-fructose in aqueous solution are +66º, +140º, -52º and +92º, respectively)$ (1) $‘invert sugar’ is prepared by acid catalyzed hydrolysis of maltose$ (2) $‘invert sugar’ is an equimolar mixture of D-(+)-glucose and D-(-)-fructose$ (3) $specific rotation of ‘invert sugar’ is -20º$ (4) $on reaction with B r_{2} water, ‘invert sugar’ forms saccharic acid as one of the products$ 140. $Which one of the following statements is not true?$ (1) $Lactose contains α -glycosidic linkage between C_{1} of galactose and C_{4} of glucose$ (2) $Lactose is a reducing sugar and it gives Fehling's test$ (3) $On acid hydrolysis, lactose gives one molecule of D (+) -glucose and one molecule of D (+) - galactose$ (4) $Lactose (C_{11} H_{22} O_{11}) is a disaccharide and it contains 8 hydroxyl groups$ 141. $The α - D ‐glucose and β - D ‐glucose differ from each other due to difference in carbon atom with respect to its$ (1) $number of OH groups$ (2) $size of hemiacetal ring$ (3) $conformation$ (4) $configuration.$ 142. $Which of the following hormones contains iodine?$ (1) $Testosterone$ (2) $Adrenaline$ (3) $Thyroxine$ (4) $Insulin$ 143. $Which of the following is an amine hormone.$ (1) $Insulin$ (2) $Progesterone$ (3) $Thyroxine$ (4) $Oxypurin$ 144. $In a protein molecule various amino acid are linked together by [NEET 2016]$ (1) $β-glycosidic bond$ (2) $peptide bond$ (3) $dative bond$ (4) $α-glycosidic bond$ 145. $The peptide that gives positive ceric ammonium nitrate and carbylamines tests is :$ (1) $Ser - Lys$ (2) $Gln - Asp$ (3) $Lys - Asp$ (4) $Asp - Gln$ 146. $Which of the following amino acids is basic in nature?$ (1) $Valine$ (2) $Tyrosine$ (3) $Arginine$ (4) $Leucine$ 147. $The Haworth projection shown below represents$ (1) $β - D - (-) Fructofuranose$ (2) $β - D - (+) Glucopyranose$ (3) $α - D - (-) Fructofuranose$ (4) $α - D - (+) Glucopyranose$ 148. $In a linear tetrapeptide (Constituted with different amino acids), (number of amino acids) - (number of peptide bonds) is______.$ 149. $A compound (x) with molar mass 108 g mol^{- 1} undergoes acetylation to give product with molar mass 192 g mol^{- 1} . The number of amino groups in the compound (x) is_____$ 150. $The total number of distinct naturally occurring amino acids obtained by complete acidic hydrolysis of the peptide shown below is :$