Total Number of Question/s - 4224

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  • 1. Chemical Reactions and Equations - Quiz


    1. The removal of oxygen from a substance is called:
    a) oxidation
    b) corrosion
    c) reduction
    d) rancidity

    2. In the context of redox reactions, the removal of hydrogen from a substance is known as:
    a) oxidation
    b) dehydration
    c) reduction
    d) dehydrogenation

  • 2. Acids, Bases and Salts - Quiz


    1. In the following reaction, _____ is a base. 
    H3PO4(aq) + 3NaOH(aq) → Na3PO4(aq) + 3H2O(l)

    a) Na3PO4
    b) H3PO4
    c) NaOH
    d) H2O

    2. A solution reacted with crushed egg-shell to give a gas that turns lime water milky. The solution contains:
    a) HCl
    b) KCl
    c) NaCl
    d) LiCl

  • 3. Metals and Non-metals - Quiz


    1. Covalent aluminium compound in the following is:
    a) Aluminium nitrate
    b) Aluminium fluoride
    c) Aluminium sulphate
    d) Aluminium chloride

    2. Which of the following metals are extracted by the electrolysis of their molten chlorides?
    a) Na and Hg
    b) Hg and Mg
    c) Na and Mg
    d) Cu and Fe

  • 4. Carbon and its Compounds - Quiz


    1. The general formula of carboxylic acids is:
    a) CnH2+1OH
    b) CnH2nO2
    c) CnH2nO
    d) CnH2n+2

    2. Rectified spirit is:
    a) 95% ethanol
    b) 100% ethanol
    c) 90% ethanol
    d) 100% methanol

  • 5. Periodic Classification of Elements - Quiz


    1. The maximum number of electrons that can be accommodated by an orbit is:
    a) n2
    b) 2n2
    c) 4n2
    d) 2n2-2

    2. The three imaginary elements X, Y and Z represent a Dobernener triad. If the atomic mass of element X is 14 and that of element Y is 46, then the atomic mass of element Z will be:
    a) 28
    b) 60
    c) 78
    d) 72

  • 6. Life Processes - Quiz


    1. Most of the plants absorb nitrogen in one of the following forms. This is:
    a) proteins
    b) nitrates and nitrites
    c) urea
    d) atmospheric nitrogen

    2. In anaerobic respiration, pyruvic acid in the muscles form
    a) Formic acid
    b) Glucose
    c) Lactic acid
    d) Alcohol

  • 7. Control and Coordination - Quiz


    1. Phototropism in plants is due to:
    a) Inhibition of cytokinin synthesis
    b) Unequal distribution of cytokinins gibberellins
    c) Unequal distribution of auxin
    d) Uniform occurrence of gibberellins

    2. The longest cell in human body is
    a) Reproductive cell
    b) Nerve cell
    c) Liver cell
    d) Muscle fibre

  • 8. How do Organisms Reproduce? - Quiz


    1. Which of the following is not ba sexually transmitted disease?
    a) gonorrhoea
    b) hepatities
    c) syphilis
    d) AIDS

    2. In stem cutting a slanting cut is made in the stem
    a) below the node
    b) above the node
    c) on the node
    d) across the node

  • 9. Heredity and Evolution - Quiz


    1. Fossilisation occurs where
    a) animals are destroyed by environment
    b) animals are destroyed by scavengers
    c) animals are burried by natural processes
    d) orangisms are burried by natural processes

    2. Which is the vertical organ in man ?
    a) Vermiform appendix
    b) Cervical vertebra
    c) Atlas
    d) None of the above

  • 10. Light - Reflection and Refraction - Quiz


    1. A convex lens is made of two transparent materials A and B . A ray of light is incident on the lens from a point object . We will see :
    a) four images
    b) two images
    c) six images
    d) none of these

    2. The image formed by a spherical mirror is virtual. The mirror will be:
    a) concave
    b) convex
    c) either concave or convex
    d) metallic

  • 11. Human Eye and Colourful World - Quiz


    1. A student sitting on the last bench in the class cannot read the writing on the blackboard clearly but he can read the book lying on his desk clearly. Which of the following statement is correct about the studnt?
    a) The near point of his eyes has receded away.
    b) The near point of his eyes has come closer to him.
    c) The far point of his eyes has receded away.
    d) The far point of his eyes has come closer to him.

    2. The colour of white light which suffers the maximum bending (or maximum refraction) on passing through a glass prism is:
    a) yellow
    b) orange
    c) red
    d) violet

  • 12. Electricity - Quiz


    1. Which of the following characteristic is not suitable for a fuse wire?
    a) thin and short
    b) thick and short
    c) low melting point
    d) higher resistance than rest of wiring

    2. Which of the following is converted into heat energy when current is passed through a conductor?
    a) Electric resistance
    b) Electric current
    c) Electric potential
    d) Electric energy

  • 13. Magnetic Effects of Electric Current - Quiz


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

    2. The shape of the earth magnetic field resembles that of an imaginary:
    a) U-shaped magnet
    b) Straight conductor carrying current
    c) Current-carrying circular coil
    d) Bar magnet

  • 14. Sources of Energy - Quiz


    1. To produce biogas in a biogas plant, we need:
    a) Oxygen but not water
    b) Oxygen and water
    c) Water but not oxygen
    d) Neither oxygen nor water

    2. The constistuent of biogas which makes it an excellent fuel is:
    a) butane
    b) methane
    c) propane
    d) ethane

  • 15. Our Environment - Quiz


    1. The process of concentration of chemicals as they are passed from one trophic level to another is called
    a) bioconcentration
    b) biomagnification
    c) bioremediation
    d) none of the above

    2. Disease that affects workers of coal mines is
    a) pneumoconiosis
    b) asbestosis
    c) taeniasis
    d) none

  • 16. Management of Natural Resources - Quiz


    1. Which of the following is the age old concept of water harvesting system in Madhya Pradesh .
    a) Nadis
    b) bandharas
    c) bundhis
    d) ponds

    2. The basic necessity for all terrestrial forms is :
    a) soil
    b) food
    c) water
    d) road