Showing posts with label Examination PAPERS. Show all posts
Showing posts with label Examination PAPERS. Show all posts

TEST PAPER 1

UNIT 1 - 25 MARKS

There are 14 questions in all and time limit is 45 minutes.

SECTION - A : CHOOSE APPROPRIATE ALTERNATIVE : [1 mark each, Total marks 4]



  1. 1 nanometer = ______ cm.

    1. 10-9
    2. 10-8
    3. 10-7
    4. 10-6

  2. The most important property of nanomaterials is ______.

    1. force
    2. friction
    3. pressure
    4. ductility

  3. For a plane mirror, magnification (m) = ______.

    1. 0
    2. 1
    3. +1 or -1
    4. <>

  4. Blue + Green (light) = ______.

    1. Magenta
    2. Cyan
    3. Yellow
    4. Violet

    SECTION - B : ANSWER IN SHORT : [1 mark each, Total marks 4]


  5. Define : Nanotechnology.
  6. Define : Principal focus of convex lens.
  7. Why does a green leaf appear green ?
  8. Mention the principle of simple microscope.

    SECTION - C : ANSWER IN BRIEF : [2 marks each, Total marks 6]


  9. Explain the use of nanotechnology in diagnostics.
  10. Explain : Regular reflection.
  11. Explain : Near-sightedness(no diagram).

    SECTION - D : ANSWER THE FOLLOWING : [3 marks each, Total marks 6]


  12. Describe the concept of nanotubes.
  13. Describe subtractive method of mixing of pigments.

    SECTION - E : ANSWER IN DETAIL : [5 marks each, Total marks 5]


  14. Derive mirror formula.

TEST PAPER 2

UNIT 2 - 25 MARKS

There are 14 questions in all and time limit is 45 minutes.

SECTION - A : CHOOSE APPROPRIATE ALTERNATIVE : [1 mark each, Total marks 4]



  1. The equivalent resistance of three resistors, each of 6 Ω, connected in parallel is ______.

    1. 6 Ω
    2. 18 Ω
    3. 2 Ω
    4. 0.5 Ω

  2. Which of the following is not correct for the electrical work ?

    1. W = VQ
    2. W = VIt
    3. W = I2Rt
    4. W = I2RQ

  3. What is the frequency of current used domestically in India ?

    1. 50 Hz
    2. 60 Hz
    3. 110 Hz
    4. 220 Hz

  4. The principle of magnetic induction was given by ______.

    1. Faraday
    2. Galileo
    3. Oersted
    4. Ampere

    SECTION - B : ANSWER IN SHORT : [1 mark each, Total marks 4]


  5. Define : Electrical potential.
  6. What causes resistance in a conductor ?
  7. What is over-loading ?
  8. What is alternating current(AC) ?

    SECTION - C : ANSWER IN BRIEF : [2 marks each, Total marks 6]


  9. State two disadvantages of series connection.
  10. If 300 mA current passes through a lamp, how many electrons will pass through it in 1 minute ?
  11. Explain the work(importance) of a fuse.

    SECTION - D : ANSWER THE FOLLOWING : [3 marks each, Total marks 6]


  12. Explain the construction and working of a simple Voltaic cell.
  13. Explain the experiment to show the presence of magnetic field due to electric current.

    SECTION - E : ANSWER IN DETAIL : [5 marks each, Total marks 5]


  14. Describe Ohm's experiment OR Describe electric motor with neat diagram.

TEST PAPER 4

UNIT 4 - 25 MARKS

There are 14 questions in all and time limit is 45 minutes.

SECTION - A : CHOOSE APPROPRIATE ALTERNATIVE : [1 mark each, Total marks 4]



  1. Formation of petroleum in earth's crust is a ______ reaction.

    1. geochemical
    2. biochemical
    3. physiochemical
    4. physical

  2. Pyrex glass is ______.

    1. plasticized glass
    2. polymeric glass
    3. heat-resistant glass
    4. opaque glass

  3. Ethylethanoate is ______.

    1. an alcohol
    2. an acid
    3. an ester
    4. a ketone

  4. Which of the following is not an oxidising agent ?

    1. NaBH4
    2. KMnO4
    3. Cr2O3
    4. Fehling's solution

    SECTION - B : ANSWER IN SHORT : [1 mark each, Total marks 4]


  5. Define : Rate of reaction.
  6. State the Law of Mass-Action.
  7. Who prepared Portland cement for the first time ? When ?
  8. What is formalin ?

    SECTION - C : ANSWER IN BRIEF : [2 marks each, Total marks 6]


  9. Explain : Molarity.
  10. Describe manufacture of lime.
  11. Show that the H atom in the -COOH group has acidic nature.

    SECTION - D : ANSWER THE FOLLOWING : [3 marks each, Total marks 6]


  12. Describe Ammonia-Soda process to obtain washing soda.
  13. Write chemical properties of formaldehyde giving chemical equations. OR Describe preparation of polyamides(nylon) and give its two uses.

    SECTION - E : ANSWER IN DETAIL : [5 marks each, Total marks 5]


  14. Write a detailed note on pH.

TEST PAPER 3

UNIT 3 - 25 MARKS

There are 14 questions in all and time limit is 45 minutes.

SECTION - A : CHOOSE APPROPRIATE ALTERNATIVE : [1 mark each, Total marks 4]



  1. What is used generally as a connecting material in solar panels ?

    1. Silicon
    2. Silver
    3. Selenium
    4. Germanium

  2. ______ invented artificial radioactivity.

    1. Marie Curie
    2. Berkley
    3. Lord Rudherford
    4. Maxwell

  3. The mass of earth is ______ times the mass of mercury.

    1. 10
    2. 14
    3. 18
    4. 22

  4. Each nakshatra is an angular region of about ______.

    1. 15° 30'
    2. 14° 40'
    3. 13° 20'
    4. 12° 30'

    SECTION - B : ANSWER IN SHORT : [1 mark each, Total marks 4]


  5. What is the wavelength of visible light in meter ?
  6. How is charcoal obtained from wood ?
  7. What is corona ?
  8. What is celestial sphere ?

    SECTION - C : ANSWER IN BRIEF : [2 marks each, Total marks 6]


  9. Mention two advantages and two limitations of solar cooker.
  10. Explain the theory of formation of our solar system.
  11. Explain the installation of artificial satellite by space shuttle.

    SECTION - D : ANSWER THE FOLLOWING : [3 marks each, Total marks 6]


  12. Mention six characteristics of ideal fuel.
  13. Write a note on asteroids(six points).

    SECTION - E : ANSWER IN DETAIL : [5 marks each, Total marks 5]


  14. Write a note on Nuclear reactor with a neat diagram. OR Write a note on galaxy.

TEST PAPER 5

UNIT 5 - 25 MARKS

There are 14 questions in all and time limit is 45 minutes.

SECTION - A : CHOOSE APPROPRIATE ALTERNATIVE : [1 mark each, Total marks 4]



  1. During electrolytic reduction, ______ acts as reducing agent.

    1. anode
    2. cathode
    3. electrolyte
    4. metal

  2. ______ is used for manufacturing scientific balance.

    1. Steel
    2. Brass
    3. Stainless steel
    4. Magnalium

  3. There are ______ nonmetals in solid state.

    1. 11
    2. 12
    3. 13
    4. 14

  4. Sulphur belongs to ______ group in periodic table.

    1. Boron
    2. Carbon
    3. Oxygen
    4. Halogen

    SECTION - B : ANSWER IN SHORT : [1 mark each, Total marks 4]


  5. Define : Metallurgy.
  6. What is the use of Van Arkel's method ?
  7. Why do nonmetals not react with dilute acids ?
  8. Which crystalline form of sulphur is most stable ?

    SECTION - C : ANSWER IN BRIEF : [2 marks each, Total marks 6]


  9. Describe roasting with two examples.
  10. Mention four uses of hydrogen.
  11. Describe preparation of sulphur from natural gas.

    SECTION - D : ANSWER THE FOLLOWING : [3 marks each, Total marks 6]


  12. Describe extraction of aluminium by Hall-Heroult method with diagram.
  13. Describe manufacture of ammonia and mention its three uses.

    SECTION - E : ANSWER IN DETAIL : [5 marks each, Total marks 5]


  14. Write a note on chemical reduction method. ORDescribe manufacture of iron using blast furnace.

TEST PAPER 6

UNIT 6 - 25 MARKS

There are 14 questions in all and time limit is 45 minutes.

SECTION - A : CHOOSE APPROPRIATE ALTERNATIVE : [1 mark each, Total marks 4]



  1. The energy released during cellular respiration is stored in ______.

    1. ATP
    2. glucose
    3. NADPH2
    4. lungs

  2. Cockroach shows ______ mode of nutrition.

    1. herbivorous
    2. carnivorous
    3. omnivorous
    4. grazing

  3. ______ is a necessary mineral for clotting of blood.

    1. Calcium
    2. Potassium
    3. Iron
    4. Zinc

  4. Birds excrete wastes in the form of ______.

    1. urea
    2. proteins
    3. uric acid
    4. water

    SECTION - B : ANSWER IN SHORT : [1 mark each, Total marks 4]


  5. What is the aim of nutrition ?
  6. Write the chemical equation for aerobic respiration.
  7. Define : Translocation.
  8. Where are blood antigens located ?

    SECTION - C : ANSWER IN BRIEF : [2 marks each, Total marks 6]


  9. Describe parasitic nutrition.
  10. Describe mechanism of breathing.
  11. Write a note on leucocytes.

    SECTION - D : ANSWER THE FOLLOWING : [3 marks each, Total marks 6]


  12. Describe nutrition in amoeba with diagram.
  13. Describe human excretory system with diagram.

    SECTION - E : ANSWER IN DETAIL : [5 marks each, Total marks 5]


  14. Describe human respiratory system(diagram not needed). OR Describe : Phloem with diagram.

TEST PAPER 7

UNIT 7 - 25 MARKS

There are 14 questions in all and time limit is 45 minutes.

SECTION - A : CHOOSE APPROPRIATE ALTERNATIVE : [1 mark each, Total marks 4]



  1. ______ is the complimentary system of nervous system.

    1. Circulatory system
    2. Endocrine system
    3. Lymphatic system
    4. Skeletal system

  2. ______ hormone regulates ionic balance.

    1. Vasopressin
    2. Thyroxin
    3. Glucagon
    4. Testosteron

  3. ______ is a very useful method for developing garden.

    1. Cutting
    2. Layering
    3. Grafting
    4. Budding

  4. The normal weight of human child at the time of birth should be ______.

    1. 1.5 kg
    2. 1.5 to 2.5 kg
    3. 3.0 to 3.5 kg
    4. 5.0 to 6.5 kg

    SECTION - B : ANSWER IN SHORT : [1 mark each, Total marks 4]


  5. What is photoperiodism ?
  6. What is meant by autonomous nervous system ?
  7. Give two examples of organisms reproducing by spore formation.
  8. What is vasectomy ?

    SECTION - C : ANSWER IN BRIEF : [2 marks each, Total marks 6]


  9. Mention two characteristics of hormones.
  10. Give two examples of nastic movement.
  11. Mention accessory reproductive glands and their function in human male. OR Mention symptoms of sexually transmitted diseases.

    SECTION - D : ANSWER THE FOLLOWING : [3 marks each, Total marks 6]


  12. Write in brief about spinal cord.
  13. Describe budding as a method of reproduction.

    SECTION - E : ANSWER IN DETAIL : [5 marks each, Total marks 5]


  14. Describe female reproductive system in humans with diagram.

TEST PAPER 8

UNIT 8 - 25 MARKS

There are 14 questions in all and time limit is 45 minutes.

SECTION - A : CHOOSE APPROPRIATE ALTERNATIVE : [1 mark each, Total marks 4]



  1. The number of genes in human being is about...

    1. 23
    2. 46
    3. 1,000 to 2,000
    4. 30,000 to 40,000

  2. ______ gave Germplasm theory.

    1. Lamarck
    2. Weismann
    3. Darwin
    4. Hugo De Vries

  3. Biological oxygen demand of ______ is the least.

    1. sewage
    2. sea water
    3. pure water
    4. polluted water

  4. ______ is the first step of sewage treatment.

    1. Precipitation
    2. Chlorination
    3. Sedimentation
    4. Aeration

    SECTION - B : ANSWER IN SHORT : [1 mark each, Total marks 4]


  5. Define : Heredity.
  6. Mutation is one of the reasons of variation. True or false ?
  7. Mention the major reason for environmental problems.
  8. What is biomagnification ?

    SECTION - C : ANSWER IN BRIEF : [2 marks each, Total marks 6]


  9. Explain : Analogous organs giving example. OR Mention components of nucleotides.
  10. Explain : Acid rain.
  11. Describe oxidation pond method.

    SECTION - D : ANSWER THE FOLLOWING : [3 marks each, Total marks 6]


  12. Explain Mendel's concept of heredity.
  13. Describe harmful effects of water pollution. OR Describe the interrelationship among population, environment and development.

    SECTION - E : ANSWER IN DETAIL : [5 marks each, Total marks 5]


  14. Describe Watson-Crick model for the structure of DNA with diagram.

TEST PAPER 9

UNITS 1,2,3 - 50 MARKS

There are 27 questions in all and time limit is 90 minutes.

SECTION - A : CHOOSE APPROPRIATE ALTERNATIVE : [1 mark
each, Total marks 7]


  1. "There is plenty of room at the bottom." This was stated by...

    1. Issac Newton
    2. Albert Einstein
    3. Richard Feynman
    4. Eric Drexler

  2. The mirror formula is ______.

    1. (1/u)-(1/v) = (1/f)
    2. (1/f)+(1/u) = (1/v)
    3. f = uv/(u+v)
    4. f = (u+v)/uv

  3. In a transparent medium, the velocity of ______ light is the least.

    1. red
    2. green
    3. yellow
    4. violet

  4. 1 unit of domestic electric energy is equal to...

    1. 1 joule
    2. 1 watt-second
    3. 3.6 x 106 j
    4. 3.6 x 106 kwh

  5. The current passing through two separate lines(circuits) of our houses is ______ A and ______ A.

    1. 5,10
    2. 5,15
    3. 10,15
    4. 2,5

  6. During the refining of petroleum, the fraction having highest boiling temperature...

    1. condenses first
    2. condenses last
    3. does not condense
    4. remains in gaseous form

  7. ______ is the largest planet of our solar system.

    1. Earth
    2. Jupiter
    3. Saturn
    4. Neptune


    SECTION - B : ANSWER IN SHORT : [1 mark each, Total
    marks 8]

  8. What is a bucky tube ?
  9. What is an image ?
  10. Current flows in a wire. Can we call the wire charged ? Why ?
  11. Define : Induced electric current.
  12. Define : Solar constant.
  13. What is the full form of KVIC ?
  14. What are meteors ?
  15. What is the basic concept(belief) of Steady-state theory ?

    SECTION - C : ANSWER IN BRIEF : [2 marks each, Total
    marks 10]

  16. Mention applications of bucky ball and carbon nanotubes.
  17. An object is placed at 30 cm in front of a convex lens of focal length 20 cm. Find the position of its image. OR Draw the ray diagram to show working of a compound microscope.
  18. What is electrolysis ? Write Faraday's laws of electrolysis. OR Mention disadvantages of using direct current(DC).
  19. Mention two categories of solar appliances with examples.
  20. Mention the names and the characteristics of terrestrial planets.

    SECTION - D : ANSWER THE FOLLOWING : [3 marks each,
    Total marks 15]

  21. Mention the role of nanotechnology in security.
  22. Describe with the help of a diagram how the seven colours of light can be combined to get white light.
  23. Explain : Electric potential and electric potential difference.
  24. Explain : Solar water heater with diagram. OR Describe construction and working of a biogas plant(no diagram).
  25. Write a note on Nakshatras. OR Mention six uses of artificial satellites.

    SECTION - E : ANSWER IN DETAIL : [5 marks each, Total
    marks 10]

  26. Derive the generalised form of Snell's law.
  27. Derive the expression for equivalent resistance(R) when three resistors R1,R2 and R3 are connected in parallel and find the current flowing through a circuit containing three resistors of 10 Ω, 5 Ω, and 5 Ω connected in parallel with potential difference 4 V. OR Describe the principle and working of an electric generator with diagram.

TEST PAPER 10

UNITS 4,5 - 50 MARKS

There are 26 questions in all and time limit is 90 minutes.

SECTION - A : CHOOSE APPROPRIATE ALTERNATIVE : [1 mark each, Total marks 7]


  1. In pH scale, the base of the logarithm of molar concentration of H3O+ ion is ______.

    1. 10
    2. 20
    3. 50
    4. 100

  2. What is used as an antacid ?

    1. Na2CO3
    2. NaHCO3
    3. NaCl
    4. NaOH

  3. ______ is an ore of calcium.

    1. Magnetite
    2. Siderite
    3. Malachite
    4. Gypsum

  4. ______ is a poor conducting metal for heat.

    1. Copper
    2. Silver
    3. Aluminium
    4. Lead

  5. There are ______ nonmetallic elements.

    1. 20
    2. 22
    3. 24
    4. 25

  6. ______ have fruity smell.

    1. Alcohols
    2. Organic acids
    3. Esters
    4. Ketones

  7. Which of the following is artificial rubber ?

    1. Isoprene
    2. Chloroprene
    3. Neoprene
    4. TEFLON


    SECTION - B : ANSWER IN SHORT : [1 mark each, Total marks 7]

  8. What is used as catalyst in the preparation of vegetable ghee ?
  9. Give two examples of irreversible reaction.
  10. What is the full form of RCC ?
  11. Write the chemical equation for the preparation of quick lime.
  12. Why are metals like sodium, pottasium and aluminium not available in free state in nature ?
  13. Why is ammonia not collected by downward displacement of water ?
  14. Write the chemical equation for the combustion of ethanol.

    SECTION - C : ANSWER IN BRIEF : [2 marks each, Total marks 12]

  15. Mention the criteria for chemical equilibrium.
  16. Describe the preparation of bleaching powder giving chemical reaction. OR Mention four uses of washing soda.
  17. Give chemical equations : (i) when iron reacts with steam (ii) when magnesium reacts with hot boiling water. OR Write the chemical equations involved in Bayer's process.
  18. Describe Frasch process to obtain sulphur(no diagram).
  19. Describe : Vulcanisation of rubber.
  20. Describe harmful effects of ethanol.

    SECTION - D : ANSWER THE FOLLOWING : [3 marks each, Total marks 9]

  21. Write the chemical formula of ordinary glass and describe its manufacture.
  22. Write three chemical properties of sulphur dioxide.
  23. Describe preparation of methanal from methanol, mention two properties and two uses of methanal. OR Write an introductory note on carbonyl compounds.

    SECTION - E : ANSWER IN DETAIL : [5 marks each, Total marks 15]

  24. Explain the concept of dynamic nature of chemical equilibrium giving example.
  25. What is concentration of ore ? Describe the process used to concentrate a sulphide ore. OR Describe refining of metals by elecrolysis giving example.
  26. Describe preparation of hydrogen in laboratory with neat diagram.

TEST PAPER 11

UNITS 6,7,8 - 50 MARKS

There are 26 questions in all and time limit is 90 minutes.

SECTION - A : CHOOSE APPROPRIATE ALTERNATIVE : [1 mark each, Total marks 7]


  1. In insects the air enters the tracheal system through ______.

    1. spiracles
    2. nostrils
    3. lungs
    4. bronchi

  2. The function of incisors is ______.

    1. cutting
    2. tearing
    3. grinding
    4. chewing

  3. There are ______ types of antigens on erythrocytes.

    1. five
    2. four
    3. three
    4. two

  4. A sunflower plant bends towards the sun; it is ______ response.

    1. thigmonastic
    2. seismonastic
    3. thermonastic
    4. photonastic

  5. ______ is useful where seeds have long dormancy period and poor germination capacity.

    1. Cutting
    2. Layering
    3. Grafting
    4. Regeneration

  6. ______ is an example of retrovirus.

    1. Virus causing AIDS
    2. TMV
    3. Bacteriophage
    4. RIV

  7. Eutrophication increases due to increase in ______.

    1. BOD
    2. industrialisation
    3. DOB
    4. soil erosion


    SECTION - B : ANSWER IN SHORT : [1 mark each, Total marks 7]

  8. Through what does a frog respire ?
  9. What is lymph ?
  10. Which plant hormones retard growth ?
  11. What is menopause ?
  12. What is the difference between prokaryotic and eukaryotic chromosomes ?
  13. What is meant by organic evolution ?
  14. What is the full form of NEERI ?

    SECTION - C : ANSWER IN BRIEF : [2 marks each, Total marks 12]

  15. Describe the effect of water and carbon dioxide on the process of photosynthesis.
  16. Write a note on blood platelets.
  17. Explain : Photoperiodism OR Mention the names of four endocrine glands in humans.
  18. Distinguish between asexual and sexual reproduction(two points).
  19. Explain : Variation.
  20. Mention two effects of land pollution. OR Draw a chart showing types of environment.

    SECTION - D : ANSWER THE FOLLOWING : [3 marks each, Total marks 9]

  21. Describe exchange of gases in roots and stems with diagram. OR Describe digestive system of grass-hopper with diagram.
  22. Write a note on tropism.
  23. Mention any six laws for environmental protection in India.

    SECTION - E : ANSWER IN DETAIL : [5 marks each, Total marks 15]

  24. Describe excretion in eatrhworm. OR Describe the structure of nephron with diagram.
  25. Describe sexual cycle in human female.
  26. Write a note on types of chromosomes with diagram.

TEST PAPER 12




SECTION - A : CHOOSE APPROPRIATE ALTERNATIVE : [1 mark
each, Total marks 15]


  1. The diameter of a bucky ball is about ______.

    1. 1 A°
    2. 10 A°
    3. 100 A°
    4. 1000 A°

  2. Absolute refractive index of any medium is always ______.

    1. 1
    2. greater than 1
    3. smaller than 1
    4. 0

  3. The unit of electric current is ______.

    1. coulomb-second
    2. coulomb/second
    3. volt/second
    4. coulomb/volt

  4. The direction of magnetic field lines is taken ______.

    1. N to S
    2. S to N
    3. entering both poles
    4. leaving both poles

  5. ______ is the superior quality of coal.

    1. Peat
    2. Lignite
    3. Bituminous
    4. Anthracite

  6. How many satellites does mercury have ?

    1. 30
    2. 21
    3. 8
    4. 0

  7. The concentration of H+ ions in neutral water is ______.

    1. 1 x 10-7 mol/lit
    2. -7.0 mol/lit
    3. 7.0 mol/lit
    4. (1/7) mol/lit

  8. Brine is ______.

    1. Na2CO3
    2. NaHCO3
    3. NaCl
    4. Na2SiO3

  9. The enzyme that converts milk to curd is ______.

    1. lactase
    2. invertase
    3. zymase
    4. cellulase

  10. Brass is an alloy of ______.

    1. copper and nickel
    2. copper and zinc
    3. copper and tin
    4. copper and iron

  11. The atomic number of sulphur is ______.

    1. 15
    2. 16
    3. 17
    4. 18

  12. ______ shows phagocytosis.

    1. Amoeba
    2. Locust
    3. Earthworm
    4. Cockroach

  13. Which multicellular organism lacks the nervous system ?

    1. Hydra
    2. Locust
    3. Sponge
    4. Cockroach

  14. Disease caused by Treponema Palidium is _______.

    1. AIDS
    2. Syphilis
    3. Gonorrhoea
    4. Typhoid

  15. Minamata disease is caused by the pollution of

    1. Mercury
    2. Lead
    3. Arsenic
    4. Cadmium

    SECTION - B : ANSWER IN SHORT : [1 mark each, Total
    marks 15]

  16. What are complimentary colours ?
  17. How many electrons should flow in one second to contribute electric current of 1 ampere ?
  18. What type of magnetic field arises when current passes through a linear wire ?
  19. Define : Solar constant.
  20. Why does the candle get extinguished when air is blown ?
  21. How many meters make 1 light year ?
  22. What is 1 molar(1 M) solution ?
  23. Write the chemical name of plaster of Paris.
  24. What is the monomer of natural rubber ?
  25. What is e.m.f. series (of metals) ?
  26. Give two examples of neutral oxides.
  27. What is the life span of human erythrocytes ?
  28. What is reflex arc ?
  29. What are homologous chromosomes ?
  30. What is Greenhouse effect ?

    SECTION - C : ANSWER IN BRIEF : [2 marks each, Total
    marks 24]

  31. Mention the use of nanotechnology for resources like energy and water.
  32. Explain why dispersion of light occurs.
  33. Three resistors of 5 Ω, 10 Ω and 15 Ω are connected in parallel.If the voltage is 3 V, find the overall current flowing through the circuit. OR Explain the right hand thumb rule for straight conductor.
  34. Write a note on Jupiter.
  35. Describe Arrhenius' concept of acid and base.
  36. Write addition reactions(one each) of formaldehyde and propanone. OR Write a brief note on soap.
  37. Explain calcination giving examples of two reactions.
  38. Explain : Exchange of gases in leaves. OR Describe excretion and osmoregulation in amoeba.
  39. Mention characteristics of hormones.
  40. Write a note on puberty.
  41. Explain homologous organs with example.
  42. Describe Oxidation pond method.

    SECTION - D : ANSWER THE FOLLOWING : [3 marks each,
    Total marks 21]

  43. Describe chemical effect of electric current giving example. OR Derive the expression for equivalent resistance(R) of three resistors connected in series.
  44. Explain : Solenoid.
  45. Describe the manufacture of bleaching powder. Write its reaction with dilute sulphuric acid and mention two uses.
  46. Describe froth floatation process with diagram. OR Describe Bayer's process for the concentration of bauxite ore.
  47. Describe light phase of photosynthesis. OR Describe digestive system of grasshopper with diagram.
  48. Describe the role of sex hormones in humans.
  49. Describe Mendel's concept of heredity.

    SECTION - E : ANSWER IN DETAIL : [5 marks each, Total
    marks 25]

  50. Derive lens formula.
  51. Describe fractional distillation of petroleum with neat diagram and mention the products obtained. OR Describe construction and working of a space shuttle(diagram not necessary).
  52. Explain physical equilibrium with example.
  53. Describe laboratory preparation of hydrogen with diagram.
  54. Describe transportation of mineral elements in plants with diagram. OR Draw a neat diagram of heart and explain its working.

TEST PAPER 13

There are 54 questions in all and time limit is 3 hours.

SECTION - A : CHOOSE APPROPRIATE ALTERNATIVE : [1 mark
each, Total marks 15]


  1. A bucky ball is a molecule consisting of ______ carbon atoms.

    1. 50
    2. 60
    3. 70
    4. 100

  2. In the spectrum of white light obtained with prism, ______ colour is deviated maximum.

    1. violet
    2. red
    3. green
    4. orange

  3. Which of the following is not correct ?

    1. P = W/t
    2. P = I2R
    3. P = WI
    4. P = VI

  4. The insulation cover on the earth wire is ______ in colour.

    1. red
    2. black
    3. green
    4. white

  5. 1 eV = ______ joule.

    1. 1.6 x 10(-17)
    2. 1.6 x 10(-18)
    3. 1.6 x 10(-19)
    4. 1.6 x 10(-20)

  6. The stars appearing ______ have very high/highest temperature.

    1. red
    2. blue
    3. white
    4. yellow

  7. The acid-base theory by Bronsted and Lowry...

    1. is based on donation of electron.
    2. does not give importance to the solvent.
    3. gives importance to the solvent.
    4. gives operational definition of acid and base.

  8. The formula of soda ash is ______.

    1. NaHCO3
    2. Na2CO3
    3. Na2CO3.10H2O
    4. NaOH

  9. What is the boiling point of acetic acid ?

    1. 98 °C
    2. 108 °C
    3. 118 °C
    4. 128 °C

  10. ______ is the formula of cuprite.

    1. Cu2O
    2. Cu2S
    3. CuCO3
    4. CuCl2

  11. ______ is a neutral oxide.

    1. Na2O
    2. CO2
    3. CO
    4. SO3

  12. The lungs are covered by two membranes called ______.

    1. glottis
    2. epiglottis
    3. pleura
    4. sphincter

  13. ______ pairs of spinal nerves arise from spinal cord.

    1. 21
    2. 31
    3. 23
    4. 46

  14. The method by which the desired characters of two plants can be combined is...

    1. cutting
    2. layering
    3. budding
    4. grafting

  15. The principle of inheritance of acquired characters was given by...

    1. Lamarck
    2. Weismann
    3. Darwin
    4. Hugo De Vries

    SECTION - B : ANSWER IN SHORT : [1 mark each, Total
    marks 15]

  16. Who photographed nanotubes for the first time ?
  17. State Snell's law.
  18. What is overloading ?
  19. What is magma ?
  20. Mention the calorific values of charcoal and wood ?
  21. What is corona ?
  22. State the pH of the solution whose pOH is 3.925.
  23. Why is NaCl added to the Plaster of Paris ?
  24. Write the chemical formulas of butanal and propanone.
  25. What is gangue ?
  26. Why is sulphuric acid known as the King of chemicals ?
  27. What is the function of phloem ?
  28. What is 'scion' ?
  29. Mention the limitation of Darwinism.
  30. What is conservation of environment ?

    SECTION - C : ANSWER IN BRIEF : [2 marks each, Total
    marks 24]

  31. Explain primary and composite colours giving examples. OR Explain why defects of vision arise.
  32. What is electrolysis ? Write Faraday's laws of electrolysis.
  33. Mention two advantages of alternating current.
  34. How are smokeless chulhas more efficient than traditional chulhas ? OR Mention names of terrestrial planets and their characteristics.
  35. Write a note on safety glass.
  36. What are condensation polymers ? Give examples.
  37. Explain with example : Reaction of nonmetals with chlorine.
  38. Describe biosynthetic phase of photosynthesis with diagram. OR Explain : Rhesus factor.
  39. Describe endocrine glands in short.
  40. What individual care should one take to prevent sexually transmitted diseases (STDs) ?
  41. Explain : Variation.
  42. Describe sewage treatment.

    SECTION - D : ANSWER THE FOLLOWING : [3 marks each,
    Total marks 21]

  43. Describe tensile strength and thermal conductivity as properties of nanotubes.
  44. Explain Cartesian sign convention for spherical mirrors with the help of a diagram.
  45. Explain the re-use of byproducts obtained during Solvay's ammonia soda process. OR Describe three chemical properties of ethyl alcohol(ethanol).
  46. Write a note on allotropes of sulphur.
  47. Describe nutrition in amoeba with diagram.
  48. Explain : Tropism OR Describe regeneration as a method of reproduction.
  49. Mention harmful effects of water pollution.

    SECTION - E : ANSWER IN DETAIL : [5 marks each, Total
    marks 25]

  50. Describe construction and working of a simple voltaic cell.
  51. Explain Solar water heater with a neat diagram. OR Describe various orbits of artificial satellites giving appropriate details.
  52. Derive the expression for the equilibrium constant for the reaction : A + B --> C + D .
  53. Describe extraction of aluminium from bauxite using Bayer's process and Hall-Heroult process. OR Explain how metals react with oxygen, water and dilute acids giving proper examples.
  54. Describe excretion in earthworm.

TEST PAPER 14

SECTION - A : CHOOSE APPROPRIATE ALTERNATIVE :

[1 mark each, Total marks 15]


  1. The cut-off limit of human eye to see is ______.

    1. 1 nm
    2. 100 nm
    3. 1000 nm
    4. 10000 nm

  2. Magnification for convex mirror is ______.

    1. always positive
    2. always negative
    3. 0
    4. 1

  3. Who had patented more than 1000 inventions during his life time ?

    1. Edison
    2. Volta
    3. Ampere
    4. Faraday

  4. ______ was the first person to notice the magnetic effect of electric current.

    1. Faraday
    2. Ampere
    3. Oersted
    4. Maxwell

  5. Bombardment of neutron on 6Li3 gives ______.

    1. 1H0
    2. 1H1
    3. 2H1
    4. 3H1

  6. The sun stays in one nakshatra for about ______.

    1. 30 days
    2. 13.5 days
    3. 7 days
    4. 1 day

  7. Conversion of milk into curd is ______.

    1. a physical change
    2. a chemical change
    3. not a chemical change
    4. neither a physical nor a chemical change

  8. Helmets are made from ______.

    1. manganese steel
    2. chrome steel
    3. cobalt steel
    4. silicon steel

  9. An organic acid + an alcohol --> ______.

    1. an aldehyde
    2. a ketone
    3. an ester
    4. an amide

  10. Which of the following is the monomer of natural rubber ?

    1. Isoprene
    2. Chloroprene
    3. Neoprene
    4. TEFLON

  11. Liquefaction method is used for the purification of metals with ______.

    1. high melting point
    2. high boiling point
    3. low melting point
    4. low boiling point

  12. Urine mainly consists of ______.

    1. uranium
    2. urea
    3. CO2
    4. sugar

  13. Plant hormones are called ______.

    1. hypohormones
    2. metahormones
    3. phytohormones
    4. cytohormones

  14. Mutation theory was given by ______.

    1. Lamarck
    2. Darwin
    3. Hugo De Vries
    4. Mendel

  15. World Environment Day is celebrated every year on ______.

    1. 5th March
    2. 15th April
    3. 15th May
    4. 5th June

    SECTION - B : ANSWER IN SHORT : [1 mark each, Total marks 15]


  17. What is a simple microscope ?
  18. Define : 1-ohm resistance.
  19. What type of magnetic field arises when current passes through a linear wire ?
  20. Where are hot water geysers found in Gujarat ?
  21. What did Ptolemy believe about the Universe ?
  22. Which is the gas mainly present in the atmosphere of Pluto ?
  23. Define : pH.
  24. Write the formula of acetone cyanohydrin.
  25. What is the full form of PABA ?
  26. Where does the biosynthetic phase of photosynthesis take place ?
  27. Mention the types of nephridia in earth worm.
  28. Define : Reproduction.
  29. Where are genes located ?
  30. What does environment mean ?
  31. What is meant by biodegradable pollutants ?

    SECTION - C : ANSWER IN BRIEF : [2 marks each, Total
    marks 24]

  32. Write a brief note on bucky ball.
  33. Distinguish between compound microscope and astronomical telescope[2 points]
  34. A lamp of resistance 20Ω is joined to a battery of 12 V. Find the value of the resistance to be connected in series with the lamp in order to get current of 0.5 A. OR Explain the importance of earthing wire.
  35. Explain : The energy obtained from nuclear fusion is better than that obtained from fission reactions.
  36. Calculate the pH of 0.03 M aqueous solution of NaOH.(Take log10 3 = 0.4771). OR Mention the criteria of chemical equilibrium.
  37. Write a note on saponification.
  38. Mention four uses of hydrogen.
  39. Describe exchange of gases in tissues.
  40. Write four points about erythrocytes.
  41. Explain the importance of ultrapure metals.
  42. Mention the characteristics of hormones.
  43. Explain : Homologous organs OR Draw a chart showing types of environment.

    SECTION - D : ANSWER THE FOLLOWING : [3 marks each,
    Total marks 21]

  44. Describe Ohm's experiment. OR Derive an expression for equivalent resistance(R) when three resistors of R1, R2 and R3 Ω are connected in parallel.
  45. Explain : Solenoid.
  46. Describe preparation of Plaster of Paris, write its two properties and two uses. OR Describe preparation of acetic acid by fermentation as well as by chemical method.
  47. Describe refining of metals by electrochemical method.
  48. Mention organs of human respiratory system and describe mechanism of breathing.
  49. Draw a neat diagram of brain and write about hind brain.
  50. Explain : Grafting with diagram.

    SECTION - E : ANSWER IN DETAIL : [5 marks each, Total
    marks 25]

  51. Explain : Total internal reflection and mirage with diagram.
  52. Describe nuclear reactor with diagram. OR Write a note on construction and working of a space shuttle with simple diagram.
  53. With the help of an experiment explain the concept of dynamic nature of chemical equilibrium.
  54. Write a detailed note on ammonia, its manufacture and mention its properties and uses.
  55. Describe the structure of chromosome with diagram. OR Describe Watson-Crick model for the structure of DNA.
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