MEDICAL (Paper-3) Previous Year Question Paper ANTHE - 2020 (Class XI Studying Moving to Class XII) Physics, Chemistry & Biology (With Video Solutions) Corporate Office : Aakash Tower, 8, Pusa Road, New Delhi-110005. Phone : (011) 47623456 Paper-3 (Medical) (Class XI Studying Moving to Class XII) Previous Year Question Paper ANTHE-2020 (Class XI Studying Moving to Class XII) Time : 1 Hour MM : 90 PHYSICS SECTION-I : SINGLE ANSWER TYPE This section contains 5 multiple choice questions. Each question has 4 choices (1), (2), (3) and (4) out of which ONLY ONE is correct. 1. A rope of length 2l and mass m is hanging from a rigid support. The tension in the rope at a distance l from 3 the rigid support will be 2. 3. (1) mg 3 (2) 2mg 3 (3) 5mg 6 (4) mg 6 If position of a moving particle varying with time(t) is given as x = at3 m and y = bt2 m (where a and b are positive constant and t is time in second), then magnitude of acceleration of the particle at t = 1 s will be (1) 36a2 4b2 m/s2 (2) 9a2 4b2 m/s2 (3) 16a2 b2 m/s2 (4) 9a2 b2 m/s2 A block of mass M is at rest on a rough inclined plane having coefficient of friction between the contacts and angle of inclination with the horizontal. The net contact force on block will be (1) Mg cos (2) Mg cos (3) Mg (4) Mg sin2 2 cos2 Space for Rough Work 1 (Class XI Studying Moving to Class XII) 4. Paper-3 (Medical) A wheel of radius R rolls on the ground with uniform velocity v. The velocity of point P w.r.t. the centre of wheel as shown in the figure will be (1) (3) (2) 3v v 2v (4) v 2 5. A block of mass m is placed on a plank of mass 2m which is placed on smooth horizontal plane. If a horizontal force F is applied on the plank such that block and plank move together, then work done by the friction force on the block in first two second of its journey will be (1) F2 9m (2) (3) 2F 2 9m (4) Zero 2F 2 3m SECTION-II : MORE THAN ONE ANSWER TYPE This section contains 2 multiple choice questions. Each question has 4 choices (1), (2), (3) and (4) out of which MORE THAN ONE answer may be correct. 6. The equation of trajectory of a particle under oblique projectile motion is given as y = 12x – 3x2 (where x and y are in meter). Choose the correct option. (1) Horizontal range of the particle is 4 m (2) Horizontal range of the particle is 6 m (3) Maximum height of the particle is 12 m (4) Maximum height of the particle is 9 m 7. Power supplied to a particle of mass 2 kg varies with time as P = 6t2 watt (where t is in second). If velocity of the particle at t = 0 is v = 0, then correct statement will be (1) Kinetic energy of the particle at t = 2 s is 16 J (2) Kinetic energy of the particle at t = 1 s is 2 J (3) Velocity of the particle at t = 2 s is 4 m/s (4) Velocity of the particle at t = 1 s is 2 m/s Space for Rough Work 2 Paper-3 (Medical) (Class XI Studying Moving to Class XII) SECTION-III : PARAGRAPH TYPE This section contains a paragraph. Based upon this paragraph, 2 multiple choice questions have to be answered. Each question has 4 choices (1), (2), (3) and (4), out of which ONLY ONE is correct. A ball of mass 2 kg moving with the velocity of 6 m/s collide with another ball of mass 4 kg as shown in the figure. If the collision is perfectly inelastic, then 8. The loss in kinetic energy of system will be (1) 6 J (2) 24 J (3) 18 J (4) 12 J 9. Velocity of the ball A just after the collision is (1) 2 m/s towards right (2) 2 m/s towards left (3) 4 m/s towards right (4) 6 m/s towards left SECTION-IV : ASSERTION-REASON TYPE This section contains 1 assertion-reason type question, which has 4 choices (1), (2), (3) and (4) out of which ONLY ONE is correct. 10. A: Relative velocity is zero when two bodies are moving in opposite direction with same speed. R: Relative velocity of a body with respect to another depends on direction of motion. (1) Both (A) and (R) are true and (R) is the correct explanation of (A) (2) Both (A) and (R) are true but (R) is not the correct explanation of (A) (3) (A) is true but (R) is false (4) (A) is false but (R) is true Space for Rough Work 3 (Class XI Studying Moving to Class XII) Paper-3 (Medical) SECTION-V : MATRIX MATCH TYPE This section contains 1 Matrix Match type question, which has 2 Columns (Column I and Column II). Column I has four entries (A), (B), (C) and (D), Column II has four entries (P), (Q), (R) and (S). Match the entries in Column I with the entries in Column II. Each entry in Column I may match with one or more entries in Column II. For each entry in Column I, tick the boxes of all the matching entries in Column II. For example, if entry (A) in Column I matches with entries (P) & (S) in Column II, then tick the boxes (P) & (S). Similarly, tick the boxes for entries (B), (C) and (D). 11. A particle of mass m kg is displaced from one given point to another given point under the action of several conservative and non-conservative forces (Neglect relativistic consideration) Match the entries in column I with correct entries in column II. Column-I Column-II (A) Displacement of particle (P) Path dependent (B) Work done by conservative force (Q) Path independent (C) Work done by non-conservative force (R) In a closed path is zero (D) Distance travelled by particle (S) In a closed path is non-zero CHEMISTRY SECTION-I : SINGLE ANSWER TYPE This section contains 5 multiple choice questions. Each question has 4 choices (1), (2), (3) and (4) out of which ONLY ONE is correct. 12. Number of mole of atoms present in 0.2 g of C3H4 is (1) 0.005 (2) 0.025 (3) 0.004 (4) 0.035 Space for Rough Work 4 Paper-3 (Medical) (Class XI Studying Moving to Class XII) 13. Incorrect value of quantum number for last electron of magnesium atom, is (1) n = 3 (2) l = 0 (3) m = –1 (4) s = +1/2 14. Among the following which one has maximum ionization energy? (1) O (2) O2– (3) O– (4) O+ 15. Among the following which gas effuses most rapidly under identical conditions of temperature and pressure? (1) CO2(g) (2) O2(g) (3) He(g) (4) H2(g) 16. Amount of heat exchange when 1 mol ideal gas is adiabatically expanded against 2 atm constant external pressure from 2 L to 12 L, is (1) –20 L-atm (2) Zero (3) –40 L-atm (4) –80 L-atm SECTION-II : MORE THAN ONE ANSWER TYPE This section contains 2 multiple choice questions. Each question has 4 choices (1), (2), (3) and (4) out of which MORE THAN ONE answer may be correct. 17. Species which is/are having more than 8 electrons in its bonding molecular orbitals is/are (1) B2 (2) O22 (3) N2 (4) O2 18. Select the incorrect statement(s) among the following (1) Most of the gases under extremely high pressure conditions show positive deviation from ideal behaviour (2) H2(g) under all pressure conditions show negative deviation from ideal behaviour (3) van der Waals constant ‘a’ for CO2(g) is more than CO(g) (4) At Boyle’s temperature, gases behave as ideal gas at all pressure conditions Space for Rough Work 5 (Class XI Studying Moving to Class XII) Paper-3 (Medical) SECTION-III : PARAGRAPH TYPE This section contains a paragraph. Based upon this paragraph, 2 multiple choice questions have to be answered. Each question has 4 choices (1), (2), (3) and (4), out of which ONLY ONE is correct. Dipole moment of a covalent bond depends on electronegativity difference between the atoms and the bond length. A molecule will have a net dipole moment if the summation of the individual bond moments is non zero. Molecules having non-zero dipole moment are polar while having zero dipole moment are non-polar. 19. Select the polar molecule among the following (1) PCl3F2 (2) SF6 (3) XeF2 (4) PCl2F3 20. Correct order of dipole moment among the following is (1) H2O > H2O2 > OF2 (2) CH3Cl > CH2Cl2 > CHCl3 (3) CH3F > CH3Cl > CH3Br (4) HF > NH3 > H2O SECTION-IV : ASSERTION- REASON TYPE This section contains 1 assertion-reason type question, which has 4 choices (1), (2), (3) and (4) out of which ONLY ONE is correct. 21. A: Entropy of universe always increases in the direction of spontaneity. R: Energy of universe always increases in the direction of spontaneity. (1) Both (A) and (R) are true and (R) is the correct explanation of (A) (2) Both (A) and (R) are true but (R) is not the correct explanation of (A) (3) (A) is true but (R) is false (4) (A) is false but (R) is true Space for Rough Work 6 Paper-3 (Medical) (Class XI Studying Moving to Class XII) SECTION-V : MATRIX MATCH TYPE This section contains 1 Matrix Match type question, which has 2 Columns (Column I and Column II). Column I has four entries (A), (B), (C) and (D), Column II has four entries (P), (Q), (R) and (S). Match the entries in Column I with the entries in Column II. Each entry in Column I may match with one or more entries in Column II. For each entry in Column I, tick the boxes of all the matching entries in Column II. For example, if entry (A) in Column I matches with entries (P) & (S) in Column II, then tick the boxes (P) & (S). Similarly, tick the boxes for entries (B), (C) and (D). 22. Match the compounds given in column-I with the hybridisation and molecular structures given in column-II Column-I Column-II (A) SO3 (P) Planar species (B) PCl3 (Q) Central atom having lone pair (C) XeF4 (R) All bond lengths are equal (D) PCl5 (S) Non polar molecule BIOLOGY SECTION-I : SINGLE ANSWER TYPE This section contains 6 multiple choice questions. Each question has 4 choices (1), (2), (3) and (4) out of which ONLY ONE is correct. 23. Read the following statements and select the incorrect one. (1) Polysome is not formed in nucleoplasm (2) Both replication and translation cannot occur in the same compartment of a cell (3) Polyribosomes are also seen in mitochondria and chloroplasts (4) Compartmentalisation does not occur in the nucleus Space for Rough Work 7 (Class XI Studying Moving to Class XII) Paper-3 (Medical) 24. Regarding binomial nomenclature, which of the following names is correctly represented when handwritten? (1) Homo sapiens (2) Solanum melongena (3) Mangifera indica Linn. (4) Triticum Aestivum 25. Some of the events occurring during cell division are given below (a) Exchange of genetic material between non-sister chromatids of homologous chromosomes. (b) Splitting of centromere. (c) Division of cytoplasm by the formation of furrow in the plasma membrane. (d) Synthesis of DNA. With respect to meiotic division, which option shows the correct sequence? (1) (d), (a), (c), (b) (2) (a), (d), (b), (c) (3) (a), (b), (d), (c) (4) (d), (b), (a), (c) 26. Flat tile-like polygonal cells forming inner lining of blood vessels and heart is called (1) Mesothelium (2) Epidermis (3) Endothelium (4) Peritoneum 27. Select the incorrect pair w.r.t. listed biomolecules. (1) Polysaccharides : Obtained in acid insoluble fraction (2) Starch : Homopolysaccharide formed by glucose (3) Cellulose : Structural component of plant cells (4) Myosin : Linear polymer of amino acids linked by phosphodiester bonds 28. Complete the analogy by choosing the correct option Planaria : Flame cells : : Prawns : : _________ (1) Green glands (2) Proboscis gland (3) Malpighian tubules (4) Nephridia Space for Rough Work 8 Paper-3 (Medical) (Class XI Studying Moving to Class XII) SECTION-II : MORE THAN ONE ANSWER TYPE This section contains 3 multiple choice questions. Each question has 4 choices (1), (2), (3) and (4) out of which MORE THAN ONE answer may be correct. 29. In five kingdom classification system, (1) Autotrophs are grouped in more than one kingdom (2) Heterotrophs are grouped in more than one kingdom (3) Organisms having organ system of body organisation are placed in two kingdoms (4) Chemosynthetic organisms are placed only in one kingdom 30. Select the option which has incorrect entries in the below given table w.r.t. human ABO blood group and its compatibility. Blood group Can give blood to Can receive blood from (1) A+ A– AB (2) B– B+ A (3) AB+ AB– A, B, AB, O (4) O+ O– A, B, AB 31. Choose the incorrect match of three items given with the category mentioned against them. (1) Adenine, glutamic acid, glycine – amino acids (2) Thyroxine, cytosine, uridine – nucleoside (3) Myosin, methionine, Tropomyosin – muscle proteins (4) Arachidonic acid, oleic acid, linoleic acid – fatty acids SECTION-III : PARAGRAPH TYPE This section contains a paragraph. Based upon this paragraph, 2 multiple choice questions have to be answered. Each question has 4 choices (1), (2), (3) and (4), out of which ONLY ONE is correct. The diagnostic features of different families in angiosperms are mainly based on floral characters. For a quick comprehension of most of the diagnostic features of a family, these characters are symbolised and form a floral formula. Floral diagrams are also drawn to give some extra information. 32. The floral formula does not show that (1) Flower is actinomorphic or zygomorphic (2) Gynoecium is syncarpous or apocarpous (3) Placentation is axile or free central (4) Perianth is gamopetalous or polytepalous Space for Rough Work 9 (Class XI Studying Moving to Class XII) 33. Paper-3 (Medical) In a floral diagram, epipetalous condition of androecium is represented as (1) (2) (3) (4) SECTION-IV : ASSERTION- REASON TYPE This section contains 1 assertion-reason type question, which has 4 choices (1), (2), (3) and (4) out of which ONLY ONE is correct. 34. A: Asthma is difficulty in breathing causing wheezing due to inflammation of bronchi and bronchioles. R: The constriction of bronchi and bronchioles in asthma is solely due to fibrosis of lung parenchyma which leads to serious lung damage. (1) Both (A) and (R) are true and (R) is the correct explanation of (A) (2) Both (A) and (R) are true but (R) is not the correct explanation of (A) (3) (A) is true but (R) is false (4) (A) is false but (R) is true SECTION-V : MATRIX MATCH TYPE This section contains 1 Matrix Match type question, which has 2 Columns (Column I and Column II). Column I has four entries (A), (B), (C) and (D), Column II has four entries (P), (Q), (R) and (S). Match the entries in Column I with the entries in Column II. Each entry in Column I may match with one or more entries in Column II. For each entry in Column I, tick the boxes of all the matching entries in Column II. For example, if entry (A) in Column I matches with entries (P) & (S) in Column II, then tick the boxes (P) & (S). Similarly, tick the boxes for entries (B), (C) and (D). Space for Rough Work 10 Paper-3 (Medical) (Class XI Studying Moving to Class XII) 35. Match the Column-I with Column-II. Column-I Column-II (A) Albugo (P) Forms conidia (B) Truffle (Q) Disease causing (C) Ustilago (R) Edible (D) Alternaria (S) Coenocytic Space for Rough Work 11 Paper-3 (Medical) (Answers) (Class XI Studying Moving to Class XII) Corporate Office : Aakash Tower, 8, Pusa Road, New Delhi-110005, Ph.011-47623456 Previous Year Question Paper ANTHE-2020 (Class XI Studying Moving to Class XII) Answers 1. (3) 12. (4) 24. (3) 2. (1) 13. (3) 25. (1) 3. (3) 14. (4) 26. (3) 4. (4) 15. (4) 27. (4) 5. (3) 16. (2) 28. (1) 6. (1, 3) 17. (2, 3, 4) 29. (1, 2, 4) 18. (2, 4) 30. (1, 2, 3, 4) 7. (1, 2, 3) 19. (4) 31. (1, 2, 3) 8. (2) 20. (2) 32. (3) 9. (1) 21. (3) 33. (2) 22. A – P, R, S 34. (3) 10. (4) 11. A – Q, R B – Q, R 35. A – Q, S B – Q, R C – P, Q, R, S B – P, R C – P, S D–S C–Q D – P, S D – P, Q 23. (2) 1 (Class XI Studying Moving to Class XII) Paper-3 (Medical) (Hints & Solutions) Corporate Office : Aakash Tower, 8, Pusa Road, New Delhi-110005, Ph.011-47623456 Previous Year Question Paper ANTHE-2020 (Class XI Studying Moving to Class XII) HINTS & SOLUTIONS PHYSICS 1. Answer (3) Mass per unit length m 2l Mass of length m1 m 5l 2l 3 5m 6 T m1g T 2. 5l of rope, 3 5mg 6 Answer (1) x = at3 vx = 3at2 ax = 6at y = bt2 vy = 2bt ay = 2b a ax2 ay2 (6a)2 (2b)2 36a2 4b2 2 Paper-3 (Medical) (Hints & Solutions) 3. (Class XI Studying Moving to Class XII) Answer (3) As block is at rest, f = Mg sin N = Mg cos F f 2 N 2 F (Mg cos )2 (Mg sin )2 = Mg 4. Answer (4) vcm,G viˆ v P ,G viˆ v jˆ v P ,cm v (iˆ ) vjˆ viˆ vjˆ v P ,cm v 5. Answer (3) F 3m a Static friction on the block f F m 3m F 3 1 s ut at 2 2 1 F 4 2 3m 2F 3m W f .S 6. 2F 2 9m Answer (1, 3) y = 12x – 3x2 for range y = 0 3 (Class XI Studying Moving to Class XII) Paper-3 (Medical) (Hints & Solutions) 12x – 3x2 = 0 X = 0, 4 m for maximum height x R 2m 2 H = 12 × 2 – 3 × (2)2 = 12 m 7. Answer (1, 2, 3) P = 6t2 dW 6t 2 dt W = 2t3 W=K K = 2t3 Kt=2 = 2 × (2)3 = 16 J 1 Mv 2 16 2 v = 4 m/s kt = 1 = 2 × (1)3 = 2 J 1 Mv 2 2 2 v 2 m/s 8. Answer (2) For perfectly inelastic collision Loss in KE 9. 1 2 4 1 m1m2 2 (6 0)2 24 J v1 v 2 2 2 4 2 m1 m2 Answer (1) Just after the collision By conservation of linear momentum 2 6iˆ 4 0 jˆ 6 v v 2i 10. Answer (4) v rel v1 v 2 v12 = v – (–v) = 2v 11. Answer A(Q,R); B(Q,R); C(P,S); D(P,S) Work done by conservative force and displacement are path independent. Work done by non-conservative force is path dependent. Distance travelled is path dependent. 4 Paper-3 (Medical) (Hints & Solutions) (Class XI Studying Moving to Class XII) CHEMISTRY 12. Answer (4) Number of moles 0.2 2 1 0.005 40 400 200 Number of moles of atoms = 0.005 × 7 = 0.035 13. Answer (3) Mg : 1s2 2s2 2p6 3s 2 n=3 l = 0 m=0 s = + ½ or –1/2 14. Answer (4) Due to smaller size and high ENC of O+ ion, it will have maximum ionization energy. 15. Answer (4) Rate of diffusion (r) 1 Molar mass . Among given gases H2 has minimum molar mass. 16. Answer (2) For adiabatic process, Q = 0 17. Answer (2, 3, 4) B2 (10e ) 6e in bonding molecular orbitals O22 (18e ) 10e in bonding molecular orbitals N2 (15e ) 10e in bonding molecular orbitals O2 (16e ) 10e in bonding molecular orbitals 18. Answer (2, 4) H2(g) under all pressure conditions show positive deviation. At Boyle’s temperature, gases are acting as ideal gas for long range of pressure. 19. Answer (4) net 0 20. Answer (2) H2O2 > H2O > OF2 CH3Cl > CH2Cl2 > CHCl3 CH3Cl > CH3F > CH3Br HF > H2O > NH3 5 (Class XI Studying Moving to Class XII) Paper-3 (Medical) (Hints & Solutions) 21. Answer (3) Energy of universe remains constant. 22. Answer A(P,R,S); B(Q,R); C(P,Q,R,S); D(S) (A) SO3 – Planar species, nonpolar molecule, all bond lengths are equal (B) PCl3 – Non-planar, polar molecule, having all bonds lengths equal. Central atom (P) has one lone pair (C) XeF4 – Planar, non polar molecule having l.p. on Xe with all bond lengths equal (D) PCl5 – It has two different types of bond lengths equatorial and axial. Molecule is non-polar BIOLOGY 23. Answer (2) In prokaryotes, DNA replication and protein synthesis occur in cytoplasm. The ribosomes of a polysome translate the mRNA into proteins. This process does not occur in nucleoplasm because polysome is not formed in nucleoplasm. 24. Answer (3) The scientific name is printed in italics or underlined separately when handwritten. 25. Answer (1) (a) – Prophase I (b) – Anaphase II (c) – Just after telophase I (d) – S phase of interphase 26. Answer (3) Epithelium that lines the pleura, peritoneum and pericardium is termed mesothelium. 27. Answer (4) Myosin (protein) is made of amino acids linked together by peptide bond. Phosphodiester bond is characteristic of nucleic acids. 28. Answer (1) Cockroaches : Malpighian tubules Prawns : Green or antennal glands Hemichordates : Proboscis gland Annelids (leech, earthworm) : Nephridia 29. Answer (1,2,4) Kingdoms Monera, Protista and Plantae include autotrophic organisms. Kingdoms Monera, Protista, Fungi and Animalia include heterotrophic organisms. Organisms only in kingdom Animalia have organ system of body organisation. Chemosynthetic organisms are found only in kingdom Monera. 6 Paper-3 (Medical) (Hints & Solutions) (Class XI Studying Moving to Class XII) 30. Answer (1, 2, 3, 4) It is crucial to match the ABO blood group of the recipient and the donor. If there’s an incompatibility the recipient’s immune system will produce antibodies against donor’s antigens resulting in clumping (agglutination) of RBCs. Blood Antigens Antibodies in Cannot give Cannot Can give Can receive group on RBCs blood blood to receive blood blood to blood from plasma from (1) A A b B B, AB A, AB A, O (2) B B a A A, AB B, AB B, O (3) AB AB Nil A, B, O – AB A, B, AB, O (4) O Nil a, b – A, B, AB A, B, AB, O O 31. Answer (1, 2, 3) Adenine is a nitrogenous base as is cytosine. Methionine is an amino acid. 32. Answer (3) A floral formula does not give the information about the placentation types in the gynoecium. 33. Answer (2) In a floral diagram a petal is represented as . When a stamen is attached to the petal, then it is called epipetalous. It is represented as 34. Answer (3) Fibrosis of lungs occurs in chronic occupational lung diseases like silicosis and asbestosis. 35. Answer A(Q,S); B(P,R); C(Q); D(P,Q) Albugo, Ustilago and Alternaria cause diseases in different plants. Albugo has coenocytic mycelium. Truffles are edible fungi. Truffles and Alternaria reproduce asexually by the formation of conidia. 7 Corporate Office : Aakash Tower, 8, Pusa Road, New Delhi-110005. Phone : (011) 47623456