Class/Course - Class X

Subject - Science

Total Number of Question/s - 4224

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  • 1. Chemical Reactions and Equations - Quiz

    1. You are given the following chemical equation:
    Mg(s) + CuO(s) → MgO (s) + Cu(s)
    This equation represents:
    a) decomposition reacction as well as displacemnt reaction
    b) combination reaction as well as double displacement reaction
    c) redox reaction as well as displacement reaction
    d) double displacement reaction as well as redox reaction

    2. It is acceptable to balance an equation by changing the formula of one of the reactants or products.
    a) True
    b) False

  • 2. Acids, Bases and Salts - Quiz

    1. The discomfort caused by indigestion due to overeating can be cured by taking:
    a) vinegar
    b) lemon juice
    c) baking soda
    d) caustic soda

    2. Sodium bi-carbonate is used as:
    a) Baking soda
    b) Antacid
    c) Fire extinguisher
    d) All the above

  • 3. Metals and Non-metals - Quiz

    1. An element is soft and can be cut with a knife.It is very reactive and cannot be kept open in the air. It reacts vigorously with water. The element is most likely to be:
    a) Mg
    b) S
    c) P
    d) Na

    2. Which of the following alloys contains mercury as one of the constituents?
    a) staniless steel
    b) solder
    c) duralumin
    d) zinc amalgam

  • 4. Carbon and its Compounds - Quiz

    1. The alcohol obtained by the alkaline hydrolysis of oil or fat is :
    a) glycerol
    b) glycol
    c) methanol
    d) ethanol

    2. One of the following is not an allotrope of carbon. This is:
    a) diamond
    b) graphite
    c) cumene
    d) buckministerfullerene

  • 5. Periodic Classification of Elements - Quiz

    1. The three elements having chemical symbols of Si, B and Ge are:
    a) all metals
    b) all non-metals
    c) all metalloids
    d) Si is mettalloid, B is metal and Ge is non- metal

    2. Which one of the following doesn t change from top to bottom in a group of a periodic table?
    a) Valence electron
    b) Metallic nature
    c) Atomic size
    d) Electronegativity

  • 6. Life Processes - Quiz

    1. Gaseous exchange in plants take place through............ and ..............
    a) Storma, grana
    b) Stomata, lenticels
    c) Guard cells, grana
    d) None of the above

    2. Which vein brings clean blood from the lungs into the heart?
    a) renal vein
    b) pulmonary vein
    c) vena cava
    d) hepatic vein

  • 7. Control and Coordination - Quiz

    1. One of the following acts as an endocrine gland as well as an exocrine gland. This one is:
    a) salivary gland
    b) pancreas
    c) pituitary
    d) parathyroid

    2. Which of the following are cerebral reflexes?
    (i)a person pulls away his hand on touching a hot object
    (ii) a person spits out immediately when a fly enters his mouth while taking
    (iii) a person walking bare foot lifts his foot at once on stepping on to a nail
    (iv) A person`s pupil contracts at once in the presence og bright light
    a) (i) and (ii)
    b) (ii) and (iii)
    c) (iii) and (iv)
    d) (ii) and (iv)

  • 8. How do Organisms Reproduce? - Quiz

    1. Haploid cells have
    a) one set of chromosome
    b) two sets of chromosomes
    c) three sets of chromosomes
    d) many sets of chromosomes

    2. The chracteristics transmitted from parents to offspring are present in:
    a) cytoplasm
    b) ribosome
    c) golgi bodies
    d) genes

  • 9. Heredity and Evolution - Quiz

    1. New species may be formed if:
    (i) DNA undergoes significant changes in germ cells
    (ii) chromosomes number changes in the gamete
    (iii) there is no change in the genetic material
    (iv) mating does not take place
    a) (i) and (ii)
    b) (i) and (iii)
    c) (ii), (iii) and (iv)
    d) (i), (ii) and (iii)

    2. The number of pair(s) of sex chromosomes in the zygote of humans is:
    a) one
    b) two
    c) three
    d) four

  • 10. Light - Reflection and Refraction - Quiz

    1. The refractive index of glass with respect to air is 3/2 and the refractive index of water with respect to air is 4/3. The refractive index of glass with respect to water will be:
    a) 1.525
    b) 1.225
    c) 1.425
    d) 1.125

    2. In order to obtain a magnification of, -1.5 with a concave mirror of focal length 16 cm, the object will have to be placed at a distance:
    a) between 6 cm and 16 cm
    b) between 32 cm and 16 cm
    c) between 48 cm 32 cm
    d) beyond 64 cm

  • 11. Human Eye and Colourful World - Quiz

    1. The angle of minimum deviation for a prism is 400 and the angle of the prism is 600 . The angle of incidence in this position will be :
    a) 1000
    b) 500
    c) 200
    d) 100

    2. The defect of vision in which the eye-lens of a person gets progressively cloudy resulting in blurred vision is called:
    a) myopia
    b) presbypia
    c) colourblindness
    d) cataract

  • 12. Electricity - Quiz

    1. The resistance of a wire of length 300 m and cross-section area 1.0 mm2 made of material of resistivity 1.0 x 10-7 Ω is:
    a) 2 Ω
    b) 3Ω
    c) 20 Ω
    d) 30 Ω

    2. When a body is charged by rubbing, its weight:
    a) Decreases slightly
    b) Remain precisely constant
    c) May increase or decrease slightly
    d) Increases slightly

  • 13. Magnetic Effects of Electric Current - Quiz

    1. At the time of short circuit, the current in the circuit:
    a) reduces substantially
    b) does not change
    c) increases heavily
    d) varies continuously

    2. The frequency of alternating current (a.c) supply in India is:
    a) 0 Hz
    b) 50 Hz
    c) 60 Hz
    d) 100 Hz

  • 14. Sources of Energy - Quiz

    1. Which of the following is a better nuclear fuel?
    a) Plutonium-239
    b) Thorium-236
    c) Uranium-235
    d) Neptunium-239

    2. Which of the following is not biomass?
    a) Rice husk
    b) Sun
    c) Cattle dung
    d) Wood

  • 15. Our Environment - Quiz

    1. Pollutant whose concentration is constant in troposphere is
    a) carbon monoxide
    b) nitrous oxide
    c) carbon dioxide
    d) sulphur dioxide

    2. Disposable plastic plates should not be used because:
    a) they are made of light weight materials
    b) they are made of toxic materials
    c) they are made of biodegrable materials
    d) they are made of non-biodegrable materials

  • 16. Management of Natural Resources - Quiz

    1. Water is listed as one of the basis :
    a) solid forms of matter
    b) nutrients of cool-aid
    c) needs of animal and plant life
    d) unit of life

    2. Ahars, kattas, Bhundhis and Khadins are the modes of:
    a) grain storage
    b) soil conservation
    c) water harvesting
    d) cold storage