Total Number of Question/s - 4224

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  • 1. Chemical Reactions and Equations - Quiz


    1. Addition of oxygen to a compound is:
    a) Precipitation
    b) Neutralization
    c) Oxidation
    d) Reduction

    2. An equation which contains equal number of atoms of each element on both sides is:
    a) Chemical equation
    b) Unbalanced equation
    c) Balanced equation
    d) All the above

  • 2. Acids, Bases and Salts - Quiz


    1. A solution turn blue litmus red. Then the pH of the solution is probably:

    b) 7
    c) 8
    d) 9

    2. A solution turns red litmus red. Its pH is likely to be:
    a) 1
    b) 4
    c) 5
    d) 10

  • 3. Metals and Non-metals - Quiz


    1. Out of the following oxides, the amphoteric oxide is:
    a) Fe2O3
    b) Al2O3
    c) P2O5
    d) N2O

    2. Which of the following metals can be obtained from haematite ore?
    a) copper
    b) sodium
    c) zinc and magnesium
    d) iron

  • 4. Carbon and its Compounds - Quiz


    1. Dehydration of methyl alcohol with Conc.H2SO4 gives :
    a) CH4
    b) CH3OCH3
    c) CH3OC2H5
    d) C2H5OC2H5

    2. The pencil leads are made of mainly:
    a) lithium
    b) charcoal
    c) lead
    d) graphite

  • 5. Periodic Classification of Elements - Quiz


    1. An element X have two orbits which completely filled. Then X is:
    a) Ne
    b) He
    c) O2
    d) Cl2

    2. The order of electron affinity in halogens is :
    a) F > CI > Br > I
    b) I > Br > CI > F
    c) CI > F > Br > I
    d) CI > Br > F > I

  • 6. Life Processes - Quiz


    1. Gills are for
    a) Pulmonary respiration
    b) Terrestrial
    c) All types of respiration
    d) Aquatic respiration

    2. Which one of the following has cytoplasm but no nucleus:
    a) xylem vessels
    b) sieve tubes
    c) trachied
    d) companion cells

  • 7. Control and Coordination - Quiz


    1. One of the following plant hormones is responsible for the phenomenon of phototropism in plants. This is:
    a) gibberellin
    b) eltroxin
    c) cytokinin
    d) auxin

    2. Cytokinins are known to
    a) Influence water transport
    b) Inhibits cytoplasmic movement
    c) Help retention of chlorophyll
    d) Promote formation of abscission layer

  • 8. How do Organisms Reproduce? - Quiz


    1. In human females, an event that indicates the onset of reproductive phase is:
    a) growth of body
    b) change in hair pattern
    c) change in voice
    d) menstruation

    2. One of the following process does not lead to the formation of clones. This is:
    a) fission
    b) fertilisation
    c) fragmentation
    d) tissue culture

  • 9. Heredity and Evolution - Quiz


    1. The human species has genetic roots in:
    a) America
    b) Africa
    c) Australia
    d) Antractica

    2. The wings of a housefly and the wings of a sparrow are an example of:
    a) analogous organs
    b) vestigial organs
    c) respiratory organs
    d) homologous organs

  • 10. Light - Reflection and Refraction - Quiz


    1. The power of a concave lens is 10 D and that of a convex lens is 6 D. When these two lenses are placed in contact with each other, the power of their combination will be:
    a) + 16 D
    b) + 4 D
    c) - 16 D
    d) - 4 D

    2. In order to obtain a magnification of, -2 (minus 2) with a concave mirror, the object should be placed:
    a) between pole and focus
    b) between focus and centre of curvature
    c) at the centre of curvature
    d) beyond the centrre of curvature

  • 11. Human Eye and Colourful World - Quiz


    1. The size of the pupil of the eye is adjusted by:
    a) cornea
    b) ciliary muscles
    c) optic nerve
    d) iris

    2. A young man has to hold a book at arm length to be able to read it clearly. The defect of vision is:
    a) astigmatism
    b) myopia
    c) presbyopia
    d) hypermetropia

  • 12. Electricity - Quiz


    1. How many joules of electrical energy are tranferred per second by a 6 V; 0.5 A lamp?
    a) 30 J/s
    b) 12 J/s
    c) 0.83 J/s
    d) 3 J/s

    2. The diagram below shows part of a circuit:

    If this arrangement of three resistors was to be placed by a single resistor, its resistance should be:
    a) 9 Ω
    b) 4 Ω
    c) 6 Ω
    d) 18 Ω

  • 13. Magnetic Effects of Electric Current - Quiz


    1. The force exerted on a current-current wire placed in a magnetic field is zero when the angle the angle between the wire and the direction of magnetic field is:
    a) 450
    b) 600
    c) 900
    d) 1800

    2. The maximum number of 40 W tube-lights connected in parallel which can safely be run from a 240 V supply with a 5 A fuse is:
    a) 5
    b) 15
    c) 20
    d) 30

  • 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 disposal of wastes produced in a nuclear power plant poses a big problem because it is:
    a) too heavy
    b) highly inflammable
    c) extremely foul smelling
    d) highly radioactive

  • 15. Our Environment - Quiz


    1. Accumulation of non-biodegrable pesticides in the food chain in increasing amount at each higher tropic level is known as:
    a) eutrophication
    b) pollution
    c) biomagnification
    d) accumulation

    2. Free floating organisms are termed
    a) plankton
    b) benthos
    c) nekton
    d) all algae

  • 16. Management of Natural Resources - Quiz


    1. With which tree Amrita Devi Bishnoi is associated?
    a) khajoor
    b) khejrali
    c) khejri
    d) keeker

    2. One of the following does not contribute in producing acis rain. This one is:
    a) sulphur dioxide
    b) carbon dioxide
    c) nitrogen dioxide
    d) carbon monoxide