Exam practice

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...

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 ...

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 ...

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)        ...

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)

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...

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

Maximum time- 30 minutes Maximum marks-25 1.   What are decomposers? Write their importance with respect to our environment.     (2) 2.   Write the causes of depletion of ozone layer. How can we prevent it?     (3) 3.   Explain the formation of ozone layer.     (2) 4.   Mention three information obtained from the energy flow diagram.     (3) 5.   What are food chains and food webs? Why are smaller food chains better?     (4) 6.   Energy flow in a food chain is unidirectional. Explain     (3) 7.   Give any three methods to reduce the problem of waste disposal.     (3) 8.   Differentiate between natural and artificial ecosystem.     (2) 9.   Write the full form of UNEP. ...

MAXIMUM TIME: 40 MINUTES MAXIMUM MARKS: 20 marks 1.    Name two human traits that show variation. (1) 2.    What is microevolution? (1) 3.    Who is known as � Father of genetics � ? (1) 4.    Why evolution should not be equated with progress? (1) 5.    How many pairs of chromosomes do human beings have, specify the types of chromosomes also? (2) 6.    How is the sex of the child determined in human beings? (2) 7.    What is the speciation? How does it occur? (2) 8.    Define evolution. State Darwin � s theory of evolution. (5) 9.    What are the various evidences in factors of evolution? (4) 10.    Which of the following pair of sex chromosomes produces a male and a female child- XX or XY? (1)

Time taken: 40minutes Maximum marks: 25 marks 1.    Name two nucleic acids? (1) 2.    What happens during copying of DNA? (1) 3.    Why does organism reproduce? (1) 4.    What is binary and multiple fission? Name the organism in which they occur. (3) 5.    How do potato and Bryophyllum plants reproduce vegetatively? (2) 6.    Devise an experiment to show germination of gram seed. (3) 7.    Draw well labeled diagram of a bisexual flower. (3) 8.    What is self and cross pollination? (2) 9.    State the functions of        a. Testis        b. Ovaries        c. Vas deferens        d. Stamen        e. Pistil (5) 10.    What are the ...

MAX MARKS: 30 MAX TIME:60 mins 1.   List down the raw materials for photosynthesis? (1 Mark) 2.   Specify what is the role of bile juice in the process of digestion? (1 Mark) 3.   Name the respiratory organ in fish and earthworm. (1 Mark) 4.   Name the types of blood vessels used for the transportation of blood. (1 Mark) 5.   What is dialysis? (1 Mark) 6.   How is respiration in plants and respiration in animals different? (2 Marks) 7.   Draw the labeled diagram of the human digestive system. (2 Marks) 8.   How are alveoli designed and why? (2 Marks) 9.   Define excretion. What are the two organs in human beings that act as accessory excretory organs? (2 Marks) 10.   State the role of the following (i) Chloroplasts (ii) Diaphragm (iii) Larynx (3 Marks) 11.   Give reasons for the following: (i) The glottis is guarded by epiglottis. (ii) It is sai...

MAXIMUM TIME:35 MINUTES MAXIMUM MARKS: 25 MARKS 1.    An element X belongs to group 1 and 3 period.         a. Give its electronic configuration         b. Formula when it combines with oxygen         c. State its nature (3) 2.    An element to 3rd period and 17th group of the periodic table, find out         a. The electronic configuration of element on its left and right         b. Its valence electrons         c. Its size with in composition with neighboring elements (3) 3.    State some characteristics of periodic table. (2) 4.    Define atomic size? (1) 5.    Name two isotopes of carbon. (1) 6.    Name any two alkali present...

Total Time: 25 mins Total Mark: 15 1.    Give the electron dot structure of CO 2 . (2 Marks) 2.    What is hydrogenation? What is its industrial application? (2 Marks) 3.    What is funcational group? Identify the functional group present in CH 3 COOH and C 2 H 5 OH. (3 Marks) 4.    Explain the mechanism of cleaning action of soaps. (3 Marks) 5.    (a) What are hydrocarbons?        (b) Give difference between saturated and unsaturated hydrocarbons.        (c) Why does carbon form large number of compounds? (5 Marks)