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Objective Questions on Carbohydrates Part III
Objective:
Level – I
1. Which of the following is not a monosaccharide?
(A) Fructose (B) Ribose
(C) Glucose (D) Pectins
2. Which of the following is vitamin – E?
(A) Retinol (B) Calciferol
(C) Tocopherol (D) Ascorbic acid
3. Most important energy carrier in all living cell is
(A) ADP (B) ATP
(C) AMP (D) UDP
4. Which of the following is sweetest?
(A) Sucrose (B) Glucose
(C) Fructose (D) Lactose
5. α ? helix structure is
(A) Primary structure (B) Secondary structure
(C) Tertiary structure (D) Quaternary structure
6. Denaturation of protein takes place by
(A) Heating (B) Addition of acid or base
(C) Addition of urea (D) All of these
7. Maltose is made up of
(A) α ? D – glucose
(B) D – fructose
(C) Glucose and fructose
(D) α D – Glucose and β ? D – glucose
8. Monomer units of starch are
(A) α? glucose (B) β ? glucose
(C) Galactose (D) Pyranose
9. Which of the following is essential amino acid?
(A) Threonine (B) Valine
(C) Lysine (D) All of these
10. Which of the following is essential fatty acid?
(A) Oleic acid (B) Linoleic Acid
(C) Linolenic Acid (D) All of these
11. In a pentapeptide chain, how many peptide linkages are present?
(A) Five (B) Four
(C) Six (D) Three
12. Amino acids are derivatives of
(A) Tertiary amine (B) Hydroxy acid
(C) Carboxylic acid (D) Proteins
13. Lysine is which type of amino acid
(A) Basic (B) Acidic
(C) α ? amino acid (D) Neutral
14. Which one of the following elements is not present in nucleic acid
(A) Carbon (B) Oxygen
(C) Phosphorus (D) Sulphur
15. Which is peptide hormone?
(A) Cytokinin (B) Insulin
(C) Glucagon (D) Progesterone
16. Which of the following is/are addition polymer/s?
(A) PVC (B) Nylon-6
(C) Teflon (D) Terylene
17. Nylon-6 6 is formed by heating
(A) Adipic acid and methane (B) Succinic acid and 1,3-butadiene
(C) Adipic acid and hexamethylene diamine (D) none
18. Terylene (Dacron) is a condensation polymer of
(A) Formaldehyde and urea
(B) Ethylene glycol and ethylene diisocyanate
(C) Ethylene glycol and terephthalic acid
(D) Maleic anhydride and methyelene glycol
19. Polystyrene is a
(A) Copolymer (B) Addition polymer
(C) Condensation polymer (D) None
20. The polymer having strongest intermolecular forces is
(A) Fibres (B) Elastomer
(C) Thermoplastic (D) Thermosetting polymer
21. Polymer obtained by condensation polymerization is
(A) Polythene (B) Teflon
(C) Phenol - formaldehyde (D) Nitrile rubber
22. Which is an example of thermosetting polymer?
(A) Polythene (B) PVC
(C) Neoprene (D) Bakelite
23. The catalyst used in the manufacture of polyethylene by Ziegler method is
(A) Titanium tetrachloride and triphenyl aluminium
(B) Titanium tetrachloride and triethylaluminium
(C) Titanium dioxide
(D) Titanium isopropoxide
24.
The value of ‘n’ in the above reaction is
(A) 2 (B) 4
(C) 5 (D) 6
25. Ebonite is
(A) natural rubber (B) Synthetic rubber
(C) Highly vulcanized rubber (D) Polypropene
Level – II
1. A pair of diastereomers that differ only in the configuration about a single carbon atom (which is not a carbonyl group) are called
(A) Epimers (B) Anomers
(C) Conformers (D) Enantiomers
2. Carbohydrates which differ in configuration at the glycosidic carbon (i.e. C1 in Aldose and C2 in ketoses) are called
(A) Anomers (B) Diastereomers
(C) Epimers (D) Enantiomers


6. Tertiary structure of protein contains which type of forces
(A) Electrostatic forces only
(B) Electrostatic as well as hydrogen bonds
(C) Electrostatic, hydrogen bonds and vander wall forces
(D) Electrostatic hydrogen bond, Vander wall forces, dipole-dipole attractions and disulphide cross-linkage
7. Primary structure of protein contains which type of bonds
(A) Only hydrogen (B) Only covalent
(C) Only vander wall (D) All of these
8. Which of the following is optically inactive amino acid?
(A) Alanine (B) Lysine
(C) Glycine (D) Arginine
9. Deficiency of vitamin E causes
(A) Beri-beri (B) Scurvy
(C) Antifertility (D) All of these
10. In the given reaction
Glucose +n phenyl hydrazine → osazone. Value of n
(A) Three (B) Two
(C) One (D) Four
11. Which of the following compounds will not show mutarotation?
(A) Methyl ? α? D – glucopyranoside (B) β? ? D (+) galactopyranose
(C) β D (+) glucopyranose (D) α?? D (+) glucopyranose
12. The monomer of neoprene is
(A) chloroprene (B) isoprene
(C) cebacic acid (D) none of these
13. Which biomolecule act as catalyst?
(A) Carbohydrate (B) Nucleic acid
(C) Protein (D) Hormones
14. P – Cl – C6H4NH2 and ph NH3+Cl- can be distinguished by
(A) NaOH (B) AgNo3
(C) Zn (D) LiAlH4
15. Write the sequence of bases on mRNA molecule synthesized on the following strand of DNA, TACAGTAAC
(A) ATGTCATTG (B) UTGTCUTTG
(C) AUCACATTG (D) AUGUCAUUG
16. Which of the following polymers do not involve cross linkages?
(A) Meimac (B) Bakelite
(C) Polyethene (D) Vulcanized rubber
17. Polymer which has amide linkage is
(A) Nylon - 66 (B) Terylene
(C) Teflon (D) Bakelite
18. Glyptal polymer is obtained form glycerol by reacting with
(A) Malonic acid (B) Phthalic acid
(C) Maleic acid (D) Acetic acid
19. Caprolactic acid is a monomer of
(A) Nylon - 6 (B) Nylon - 66
(C) Dacron (D) Neoprene
20. Terylene is condensation polymer of ethylene glycol and
(A) Benzoic acid (B) Phthalic acid
(C) Salicyclic acid (D) Terephthalic acid
21. Teflon, polystyrene and neoprene are all
(A) Copolymers (B) Condensation polymers
(C) Homopolymers (D) Monomers
22. The catalyst used for the polymerization of olefins is
(A) Zieglar- Natta catalyst (B) Wilkinson's catalyst
(C) Pd- catalyst (D) Zeise's salt complex
(E) Zeolite
23. The monomer of Teflon is
(A) ethane (B) difluoro, dichloroethene
(C) tetrachloroethene (D) tetrafluroethene
24. Which of the following is a polyamide molecule?
(A) Terylene (B) Rayon
(C) Nylon -6 (D) Polystyrene
25. Which of the following is/are acrylic acid polymers?
(B) PMMA (B) PMAA
(C) PEAA (D) all
Objective: solutions of objective Problems
Level – I
1. D 2. C 3. B
4. C 5. B 6. D
7. A 8. A 9. D
10. D 11. B 12. C
13. A 14. D 15. B, C
16. A, C 17. C 18. C
19. B 20. A 21. C
22. D 23. B 24. C
25. C
Level – II
1. A 2. A 3. B
4. D 5. A 6. D
7. B 8. C 9. C
10. A 11. A 12. A
13. C 14. B 15. D
16. C 17. A 18. B
19. A 20. D 21. C
22. A 23. D 24. C
25. D