Class/Course - Class X

Subject - Science

Total Number of Question/s - 4224


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  • 1. Chemical Reactions and Equations - Quiz

    1. Decomposing reactions are used to:
    a) Extract metals
    b) Prepare oxide
    c) Both A and B
    d) None of these

    2. Which of the following is a displacement reaction?
    a) Fe + CuSO4 → FeSO4 + Cu
    b) CaCO3 → CaO + CO2
    c) CaO + 2HCl → CaCl2 + H2O
    d) NaOH + HCl → NaCl + H2O

  • 2. Acids, Bases and Salts - Quiz

    1. The formula of baking soda is :
    a) K2CO3
    b) KHCO3
    c) NaHCO3
    d) Na2CO3

    2. The compound which contain replaceable hydrogen is:
    a) Base
    b) Acid
    c) Both A and B
    d) None of these

  • 3. Metals and Non-metals - Quiz

    1. Which of the following reactants are used to carry out the thermite reaction required for welding the broken railway tracks?
    a) Al2O3 + Fe
    b) MnO2 + Al
    c) Fe2O3 + Al
    d) Cu2O + Fe

    2. Which of the following is the formula of oleum?
    a) H2SO4
    b) H2S2O8
    c) H2S2O7
    d) H2SO3

  • 4. Carbon and its Compounds - Quiz

    1. A diamond-toothed saw is usually used for cutting:
    a) steel girders
    b) logs of wood
    c) marble slabs
    d) asbestos sheets

    2. Which of the following acts as a dehydrating agent for alcohols ?
    a) Conc.H2SO4
    b) P2O5
    c) A12O3
    d) All

  • 5. Periodic Classification of Elements - Quiz

    1. Elements were classified into metals and nonmetals by:
    a) Dobereiner
    b) Lavoisier
    c) Newland
    d) Faraday

    2. The correct formula of the oxide of Eka-aluminium element predicted by Mendeleev was:
    a) EaO3
    b) Ea3O2
    c) Ea2O3
    d) Eao

  • 6. Life Processes - Quiz

    1. Which blood vessel does not carry any carbon dioxide?
    a) pulmonary artery
    b) vena cava
    c) hepatic vein
    d) pulmonary vein

    2. In which of the following groups of organism the food material is broken down outside the body and then absorbed?
    a) mushroom, green plants, amoeba
    b) Yeast,Mushroom, Breadmould
    c) Paramecium, Amoeba, Cuscuta
    d) Cuscuta , lice, tapewoarm

  • 7. Control and Coordination - Quiz

    1. Ethylene gas:
    a) Is a saturated hydrocarbon
    b) Shows down the ripening of apples
    c) Speeds up the maturation of fruits
    d) None of these

    2. Which of the following is not a ductless gland?
    a) Pituitary
    b) Thyroid
    c) Liver
    d) Adrenal

  • 8. How do Organisms Reproduce? - Quiz

    1. Blocking of fallopian tubes by using an instrument called laparoscope is termed as
    a) tubel ligation
    b) ligation
    c) castration
    d) copulation

    2. In asexual reproduction, two offsprings having the same genetic material and the same body features are called:
    a) callus
    b) twins
    c) clones
    d) chromosomes

  • 9. Heredity and Evolution - Quiz

    1. In human males all the chromosomes are paired perfectly except one. This/ these unpaired chromosome is/are:
    (i) large chromosomes
    (ii) small chromosomes
    (iii) Y chromosomes
    (iv) X chromosomes
    a) (i) and (ii)
    b) (iii) only
    c) (iii) and (iv)
    d) (ii) and (iv)

    2. The science of heredity is known as:
    a) biology
    b) embryology
    c) genetics
    d) biochemistry

  • 10. Light - Reflection and Refraction - Quiz

    1. An object is 0.09 m from a magnifying lens and the image is formed 36 cm from the lens. The magnification produced is:
    a) 0.4
    b) 1.4
    c) 4
    d) 4.5

    2. A beam of light is incident through the holes on one side of a box and emerges out through the holes on its opposite side as shown in the following figure:

    The box contains:
    a) a glass prism
    b) a concave lens
    c) a concave lens
    d) a concave mirror

  • 11. Human Eye and Colourful World - Quiz

    1. A green book viewed through a red glass wil appear :
    a) black
    b) green
    c) red
    d) magenta

    2. The human eye can focus objects at different distances by adjusting the focal length of the eye-lens. This is due to:
    a) presbyopia
    b) accommodation
    c) near-sightedness
    d) far-sightedness

  • 12. Electricity - Quiz

    1. The current passing through a wire into the filament of a bulb makes it glow, but the wire does not glow because:
    a) The wire has more resistance than the filament
    b) Less current flows in the wire than in the filament
    c) The wire has less resistance than the filament
    d) None of these

    2. What is irrelevant for an electric fuse?
    a) Radius
    b) Specific resistance
    c) Length
    d) Current flowing through it

  • 13. Magnetic Effects of Electric Current - Quiz

    1. A current flows in a wire running between the S and N poles of a magnet lying horizontally as shown in figure below:


    The force on the wire due to the magnet is directed:
    a) from N to S
    b) Ffrom S to N
    c) vertically downwards
    d) vertically upwards

    2. A horizontal wire carries a current as shown in Figure below between magnetic poles N and S:


    Is the direction of the force on the wire due to the magnet:
    a) in the direction of the current
    b) vertically downwards
    c) opposite to the current direction
    d) vertically upwards

  • 14. Sources of Energy - Quiz

    1. Most of the energy released during fission is in the form of:
    a) Radiation energy
    b) Electrical energy
    c) Heat energy
    d) None of these

    2. The fuel which is not obtained from biomass is:
    a) firewood
    b) cow-dung cakes
    c) coke
    d) charcoal

  • 15. Our Environment - Quiz

    1. Which of the following group of organisms are not constituents of a food chain?
    (i) grass, lion, rabbit, wolf
    (ii) plankton, man, fish, grasshopper
    (iii) wolf, grass, snake, tiger
    (iv) frog, snake, eagle, grass, grasshoper
    a) (i) and (iii)
    b) (iii) and (iv)
    c) (ii) and (iii)
    d) (i) and (iv)

    2. Sahara Desert was formed over a period of time due to one of the following uncontrolled activities of man:
    a) excessive cutting down of forest plants and trees
    b) excessive killing of large herbivores
    c) excessive killing of large carnivores
    d) excessive use of poisonous chemicals called herbicides

  • 16. Management of Natural Resources - Quiz

    1. Which of the following canals brought about greenery in Rajasthan ?
    a) Jawaharlal Canal
    b) Rajiv Gandhi canal
    c) Mahatma Gandhi Canal
    d) Indira Gandhi Canal

    2. Which of the folowing fuels are formed by the degradation of biomass .
    a) Bio gas
    b) CNG
    c) Coal and Petroleum
    d) Nuclear