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Total marks – 60 Time – 60 min Q 1. Draw a labelled diagram of a neuron. List its functions. Q 2. Somatotropin is secreted by the posterior lobe of the pituitary gland.  Q 3. Flowers of primrose exhibit thigmotropism.  Q 4. Which of the following acts as a neurotransmitter in the synaptic cleft? Q 5. Central canal of the spinal cord contains: 1) Cerebrospinal fluid 2) Interstitial fluid 3) Aqueous humour 4) Pleural fluid Q 6. Progesterone controls the development of secondary sexual characters during puberty in females.  Q 7. Which gland secretes the adrenaline hormone? Write its importance in our body. Q 8. (a) Which hormone is responsible for the changes noticed in males at puberty? (b) Deficiency of which hormone leads to dwarfism. (c) Name the hormone which is injected to a diabetic patient. Q 9. The thalamusrelays pain and pressure impulses to the cerebrum. Q 10. What are nastic movements? Describe its various type...
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14

Time: 1 hour Maximum Marks: 30 1.   What is the nuclear fission process?          [1] 2.   Name any two gases, which are major constituents of biogas.          [1] 3.   What is a solar cell panel?          [1] 4.   Give the names of any two devices that utilize solar energy.          [1] 5.   Outline the energy conversion that takes place in a hydro power plant.          [1] 6.   Why can CNG be considered as an environment friendly fuel?          [1] 7.   Define anaerobic degradation.          [1] 8.   What is the typical range of voltage ...
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13

Time: 45 minutes MM: 20 1.   What does an electric current carrying wire behaves like? (1) 2.   How to define field lines? (1) 3.   What do you meant by solenoid? (1) 4.   What do you understand by electromagnet? (1) 5.   Draw the magnetic field lines due to current through circular loop. (1) 6.   State the properties of magnetic field lines? (1) 7.   State the similarity between solenoid and bar magnet. Also a difference between solenoid and coil? (2) 8.   Explain Fleming’s left hand rule. (2) 9.   What is electric fuse? What material is used for fuse wire? (2) 10.   There are some differences between electric motor and generator. State them. (2) 11.   Give any two features of magnetic field due to current carrying solenoid coil. (2) 12.   Describe an activity to show that a magnetic field is produced by an electric current flowing a ...
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12

Time: 60 Minutes MM- 35 Question 1 (1.0 marks) What are the two types of electric charges? Question 2 (1.0 marks) What do you understand by potential difference? Question 3 (1.0 marks) The direction of current is the same as that of the flow of electrons. Explain with a circuit diagram. Is this statement true or false? Question 4 (2.0 marks) State Ohm’s law. Question 5 (2.0 marks)               a)  Calculate the energy transferred when 2 A current flows through a 10 Ω resistor for 30 minutes.               b)  Calculate the amount of charge that would flow in one hour through the element of an electric iron drawing a current of 0.4 amps. Question 6 (2.0 marks) Draw a circuit diagram showing a cell, a bulb and a closed switch. Question 7 (2.0 marks)        ...
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11

Maximum time: 40 minutes Maximum marks: 23 marks 1.    Name the transparent membrane through which light enters the first in the eyes. (1) 2.    What is the function of iris? (1) 3.    What is persistence of vision? (1) 4.    What is Tyndall effect? (1) 5.    The image formed on retina is inverted but we can see the objects erect. Why? (1) 6.    What is night blindness and color blindness? (2) 7.    Distinguish between presbyopia and hypermyopia (3) 8.    Draw a well labeled diagram of eye. (4) 9.    Draw a labeled diagram of rainbow formation. Also explain the phenomena. (4) 10.    Name three refractive defects of vision with help of diagram. Explain its reasons and correction of these defects. ?(5)
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10

MAXIMUM TIME: 40 MINUTES MAXIMUM MARKS: 25 MARKS 1.    Name the type of mirror used in following situations (3)          a. Headlights of the car          b. Side/rear view mirror of a vehicle          c. Solar furnace 2.    What are two types of reflexive index. (2) 3.    Differentiate between concave and convex lens. (3) 4.    Draw the diagram of path of light when it travels through a glass slab. (3) 5.    What are the properties of the image formed by plane mirror? (2) 6.    Write laws of reflection (2) 7.    Draw and explain the ray diagram formed by a convex mirror when (5)          a. Object is at infinity          b. Object...
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16

Maximum time: 40 minutes Maximum marks: 20 marks 1.    What are 3 R � s used to save environment? 1 2.    Why fossil fuels should be used judiciously?1 3.    Name any one stakeholder. 1 4.    What are the products formed when coal and petroleum are burnt? 2 5.    Why the forests are called as biodiversity hot spots? 2 6.    Name two industries based on forest produce. 2 7.    What are the advantages of water? explain it with respect to forest, wildlife and water resources.4 8.    Dams are constructed on the river for multipurpose use. Give its advantages and disadvantages. 4 9.    How does mining cause pollution? 2 10.    Why it is necessary to conserve water and wildlife? 1
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