Biology · NDA previous year questions

If a heater coil is cut into two equal parts and only one part is used in the heater, the heat generated will be :

1. A.doubled
2. B.four times
3. C.one-fourth
4. D.halved

Internet communication uses optical fibre cables because of :

1. A.low cost
2. B.free from virus threat
3. C.high data carrying capacity
4. D.faster than light communication of signals

Administering a vaccine provides protection by inducing synthesis of antibodies (proteins) specific to the vaccine. The cell in the body responsible for the production of antibodies is

1. A.granulocyte
2. B.lymphocyte
3. C.erythrocyte (red blood cell)
4. D.platelet

Biological catalysts in living organisms are known as

1. A.hormones
2. B.vitamins
3. C.steroids
4. D.enzymes

To which one of the following types of organism do mushrooms belong?

1. A.Algae
2. B.Ferns
3. C.Fungi
4. D.Lichens

Cure to spinal injury is likely to emerge from

1. A.gene therapy
2. B.stem cell therapy
3. C.xenograft
4. D.transfusion

When X-rays are produced

1. A.heat is generated at the target
2. B.heat is absorbed at the target
3. C.the temperature of the target remains constant
4. D.brilliant light is seen at the target

A vessel contains oil (density ${\rho }_1$) over a liquid of density ${\rho }_2$; a homogeneous sphere of volume $V$ floats with half of its volume immersed in the liquid and the other half in oil. The weight of the sphere is

1. A.$V({\rho }_2-{\rho }_1)/2$
2. B.$V({\rho }_2+{\rho }_1)g/2$
3. C.$V({\rho }_2+{\rho }_1)$
4. D.$V({\rho }_2+{\rho }_1)/2$

Directions: The following four (4) items are based on the Table given below. You are to match List-I with List-II, List-III and List-IV, and select the correct answer using the code given below: | List-I (Element) | List-II (Property) | List-III (Property/Composition) | List-IV (Property/Composition) | | :--- | :--- | :--- | :--- | | A. Diamond | 1. Thermosetting polymer | I. Rigid structure | i. Non-conductor of heat | | B. Graphite | 2. Monomer | II. Sheet-like structure | ii. Ester | | C. Rayon | 3. Soft | III. Cellulose | iii. Conductor of heat | | D. Nylon | 4. Viscose process | IV. Soft on heating | iv. Ether | | E. Carbon fibre | 5. Synthetic fibre | V. Unreactive | v. Silk-like thread | | F. Polyvinyl chloride | 6. High strength | VI. Corrosion | vi. Spacecraft | | G. Terylene | 7. Thermoplastic | VII. Melts instead of burning | vii. Chlorine atom replaces hydrogen atom | | H. Bakelite | 8. Polyester fibre | VIII. Ethylene glycol | viii. Cross-linked | | | 9. Hardest natural substance | IX. Phenol and formaldehyde | ix. Terephthalic acid | List-I List-II List-III List-IV

1. A.A 9 I i
2. B.B 3 IV iv
3. C.A 9 I ii
4. D.B 3 II v

Directions: The following four (4) items are based on the Table given below. You are to match List-I with List-II, List-III and List-IV, and select the correct answer using the code given below: | List-I (Element) | List-II (Property) | List-III (Property/Composition) | List-IV (Property/Composition) | | :--- | :--- | :--- | :--- | | A. Diamond | 1. Thermosetting polymer | I. Rigid structure | i. Non-conductor of heat | | B. Graphite | 2. Monomer | II. Sheet-like structure | ii. Ester | | C. Rayon | 3. Soft | III. Cellulose | iii. Conductor of heat | | D. Nylon | 4. Viscose process | IV. Soft on heating | iv. Ether | | E. Carbon fibre | 5. Synthetic fibre | V. Unreactive | v. Silk-like thread | | F. Polyvinyl chloride | 6. High strength | VI. Corrosion | vi. Spacecraft | | G. Terylene | 7. Thermoplastic | VII. Melts instead of burning | vii. Chlorine atom replaces hydrogen atom | | H. Bakelite | 8. Polyester fibre | VIII. Ethylene glycol | viii. Cross-linked | | | 9. Hardest natural substance | IX. Phenol and formaldehyde | ix. Terephthalic acid | List-I List-II List-III List-IV

1. A.C 4 II i
2. B.D 5 VII v
3. C.C 6 V vi
4. D.D 5 II iv

Directions: The following four (4) items are based on the Table given below. You are to match List-I with List-II, List-III and List-IV, and select the correct answer using the code given below: | List-I (Element) | List-II (Property) | List-III (Property/Composition) | List-IV (Property/Composition) | | :--- | :--- | :--- | :--- | | A. Diamond | 1. Thermosetting polymer | I. Rigid structure | i. Non-conductor of heat | | B. Graphite | 2. Monomer | II. Sheet-like structure | ii. Ester | | C. Rayon | 3. Soft | III. Cellulose | iii. Conductor of heat | | D. Nylon | 4. Viscose process | IV. Soft on heating | iv. Ether | | E. Carbon fibre | 5. Synthetic fibre | V. Unreactive | v. Silk-like thread | | F. Polyvinyl chloride | 6. High strength | VI. Corrosion | vi. Spacecraft | | G. Terylene | 7. Thermoplastic | VII. Melts instead of burning | vii. Chlorine atom replaces hydrogen atom | | H. Bakelite | 8. Polyester fibre | VIII. Ethylene glycol | viii. Cross-linked | | | 9. Hardest natural substance | IX. Phenol and formaldehyde | ix. Terephthalic acid | List-I List-II List-III List-IV

1. A.E 6 I vi
2. B.F 7 IV ix
3. C.E 6 VI vi
4. D.F 3 VI v

Directions: The following four (4) items are based on the Table given below. You are to match List-I with List-II, List-III and List-IV, and select the correct answer using the code given below: | List-I (Element) | List-II (Property) | List-III (Property/Composition) | List-IV (Property/Composition) | | :--- | :--- | :--- | :--- | | A. Diamond | 1. Thermosetting polymer | I. Rigid structure | i. Non-conductor of heat | | B. Graphite | 2. Monomer | II. Sheet-like structure | ii. Ester | | C. Rayon | 3. Soft | III. Cellulose | iii. Conductor of heat | | D. Nylon | 4. Viscose process | IV. Soft on heating | iv. Ether | | E. Carbon fibre | 5. Synthetic fibre | V. Unreactive | v. Silk-like thread | | F. Polyvinyl chloride | 6. High strength | VI. Corrosion | vi. Spacecraft | | G. Terylene | 7. Thermoplastic | VII. Melts instead of burning | vii. Chlorine atom replaces hydrogen atom | | H. Bakelite | 8. Polyester fibre | VIII. Ethylene glycol | viii. Cross-linked | | | 9. Hardest natural substance | IX. Phenol and formaldehyde | ix. Terephthalic acid | List-I List-II List-III List-IV

1. A.G 8 I ix
2. B.H 4 IV iii
3. C.G 8 VIII ix
4. D.H 1 VI viii

MCQ (More than One Correct Answer) Which of the following plants is referred to as a living fossil?

1. A.Ephedra
2. B.Cycas
3. C.Gingko
4. D.Adiantum

Softening of mature ripe fruits is due to

1. A.dissolution of middle lamella
2. B.degradation of primary wall
3. C.delignification
4. D.removal of suberin deposits in the cell wall

Which part of saffron plant is used to obtain the spice ‘saffron’?

1. A.Dry stigma
2. B.Leaves
3. C.Fruits
4. D.Petals

Which of the following regions/cells in the human body is involved in controlling blood sugar level?

1. A.Pituitary gland
2. B.Islets of Langerhans
3. C.Hypothalamus
4. D.Spleen

A vessel contains oil of density $0.8gm/c{\mathrm{m}}^3$ over mercury of density $13.6gm/c{\mathrm{m}}^3$. A homogeneous sphere floats with half of its volume immersed in mercury and the other half in oil. The density of the material of the sphere in CGS unit is

1. A.$3.3$
2. B.$6.4$
3. C.$7.2$
4. D.$12.8$

Dry ice is used for making cold-baths in laboratories by mixing with volatile organic solvents. Identify the form of dry ice from the following

1. A.Gaseous carbon dioxide
2. B.Liquid carbon dioxide
3. C.Solid carbon dioxide
4. D.Solid hydrogen oxide

Match List I with List II and select the correct answer using the code given below the lists : List I (Substance)    List II (Raw Material) A. Glass B. Soap C. Paper D. Cement 1. Fat and caustic alkali 2. Cellulose fibre and gelatin 3. Silicates of calcium and aluminium 4. Silica Code :   A   B   C   D

1. A.3 2 1 4
2. B.4 2 1 3
3. C.3 1 2 4
4. D.4 1 2 3

Which one of the following is not an enzyme ?

1. A.Amylase
2. B.Pepsin
3. C.Somatotrophin
4. D.Trypsin

Among the given nutrients, milk is a poor source of

1. A.Calcium
2. B.Protein
3. C.Carbohydrate
4. D.Vitamin C

Which of the following organelles of a cell is/are involved in photosynthesis ?

1. A.Chloroplast
2. B.Mitochondrion
3. C.Endoplasmic reticulum
4. D.Golgi bodies

The wounds of face bleed profusely because

1. A.of its rich vascularity
2. B.it is close to the heart
3. C.its skin is soft
4. D.of fast contraction of facial muscle

Match List I with List II and select the correct answer using the code given below the lists : List I (Disease)    List II (Diagnosis) A. AIDS B. Plague C. Typhoid 1. Widal test 2. Wayson stain test 3. ELISA test 4. Mantoux test Code :   A   B   C

1. A.4 3 2
2. B.3 2 1
3. C.1 2 3
4. D.3 2 4

Which of the following are the possible blood groups of the offspring of the parents with blood group O and AB ?

1. A.O, A, B and AB
2. B.A and B
3. C.A, B and AB
4. D.O and AB