Quiz: 10th Grade Science Questions!

20 Questions | Total Attempts: 5545

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Quiz: 10th Grade Science Questions!

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Questions and Answers
  • 1. 
    To obtain an image on a screen, the object must be placed
    • A. 

      At the center of curvature of a concave lens

    • B. 

      At the center of curvature of a convex lens

    • C. 

      Between the focus and the optical center of a concave lens

    • D. 

      Between the focus and the optical center of a convex lens

  • 2. 
    Use the following information to answer this question: Consider acts of four students described below. Shweta refills the pen when the ink has finished Dilwar user paper bars instead of plastic bags. Raman uses waste water from kitchen to water garden plants Salma throws honey bottle in dustbin after emptying it The process of reuse is described in the act of
    • A. 

      Shweta and Raman

    • B. 

      Raman and Dilwar

    • C. 

      Dilwar and Salma

    • D. 

      Salma and Shweta

  • 3. 
    Wood obtained from teak is used
    • A. 

      For cooking

    • B. 

      For furniture

    • C. 

      In paper industry

    • D. 

      In tobacco industry

  • 4. 
    An object is placed between the center of curvature (C) and the focus (F) of a concave mirror. The image will be formed
    • A. 

      At F

    • B. 

      At C

    • C. 

      Beyond C

    • D. 

      Between F and C

  • 5. 
    Which of the following parts of the eye has enormous number of photo-sensitive cells?
    • A. 

      Iris

    • B. 

      Pupil

    • C. 

      Retina

    • D. 

      Cornea

  • 6. 
    Which of the following lenses is used to correct the defect of hypermetropia?
    • A. 

      Bifocal lens

    • B. 

      Convex lens

    • C. 

      Concave lens

    • D. 

      Cylindrical lens

  • 7. 
    The growth of the roots of plants towards a source of water is known as
    • A. 

      Phototropism

    • B. 

      Geotropism

    • C. 

      Hydrotropism

    • D. 

      Chemotropism

  • 8. 
    Consider the following statements I. An electric generator converts mechanical energy into electricity II. An electric motor works on the principle of electromagnetic induction III. A charged particle always experiences a force when moving in a magnetic field Among the given statements,
    • A. 

      Only I is correct

    • B. 

      Only III is correct

    • C. 

      I and II are correct

    • D. 

      II and III are correct

  • 9. 
    Which of the following figures is correct with respect to domestic wiring?
    • A. 

      Live wire --> Black insulation --> Negative

    • B. 

      Neutral wire --> Black insulation --> Positive

    • C. 

      Neutral wire --> Red insulation --> Negative

    • D. 

      Live wire --> Red insulation --> Positive terminal

  • 10. 
    Which of the following devices does not convert electrical energy into mechanical engery?
    • A. 

      Mixer

    • B. 

      Grinder

    • C. 

      Water turbine

    • D. 

      Washing machine

  • 11. 
    The energy of sunlight is used to generate
    • A. 

      Heat energy only

    • B. 

      Nuclear energy only

    • C. 

      Both heat and electric energy

    • D. 

      Both heat and nuclear energy

  • 12. 
    Which of the following events takes place in the dark reaction of photosynthesis?
    • A. 

      Formation of ATP and NADPH2

    • B. 

      Reduction of CO2 to form carbohydrate

    • C. 

      Absorption of light energy by chlorophyll

    • D. 

      Splitting of water molecules into hydrogen and oxygen

  • 13. 
    Which part of the brain regulates posture, orientation and equilibrium of the body?
    • A. 

      Medulla

    • B. 

      Cerebrum

    • C. 

      Cerebellum

    • D. 

      Hypothalamus

  • 14. 
    Which of the following parts of the human eye converts the incoming light into electrical signals?
    • A. 

      Ciliary muscles

    • B. 

      Optic nerves

    • C. 

      Retina

    • D. 

      Pupil

  • 15. 
    Which of the following characteristics of magnetic field lines is incorrect?
    • A. 

      They trace closed paths

    • B. 

      They never intersect each other.

    • C. 

      They run from the south pole to the north pole

    • D. 

      They emanate from the south pole and terminate at the north pole

  • 16. 
    Which of the following energy transformations is involved in windmills?
    • A. 

      Kinetic energy --> Potential energy --> Electical energy

    • B. 

      Kinetic energy --> Rotational energy --> Electrical energy

    • C. 

      Solar energy --> Potential energy --> Electical energy

    • D. 

      Soloar energy --> Rotational energy --> Electrical energy

  • 17. 
    Nitrogen dioxide is released into the atmosphere when fossil files are burnt. Excessive release of this gas results in
    • A. 

      Global warming

    • B. 

      Ozone depletion

    • C. 

      Skin cancer

    • D. 

      Acid rain

  • 18. 
    The pollen grains germinate on the stigma of pistil and give rise to pollen tube. The movement of pollen tube toward the ovule inside the pistil represents.
    • A. 

      Chemotropism

    • B. 

      Hydrotropism

    • C. 

      Phototropism

    • D. 

      Geotropism

  • 19. 
    Sulphur dioxide gas is collected by
    • A. 

      Downward displacement of water

    • B. 

      Upward displacement of water

    • C. 

      Downward displacement of air

    • D. 

      Upward displacement of air

  • 20. 
    When moist blue litmus paper is introduced in the jar of sulphur dioxide, it
    • A. 

      Turns red

    • B. 

      Remains blue

    • C. 

      Becomes decolourised

    • D. 

      Turns red and finally white

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