Class/Course - Class VIII

Subject - Science

Total Number of Question/s - 3367


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  • 1. Crop Production and Management - Quiz

    1. Which of the following classes of microorganisms play an important role in the nitrogen - cycle ?
    (I) Bacteria
    (II) Algae
    (III) Fungi
    a) I only
    b) I and II only
    c) IIand III only
    d) I,II and III

    2. Which practices are examples of an integrated cultivation system ?
    (I) Breeding livestock on oil palm plantations
    (II) Breeding small fishes in paddy fields
    (III) Planting many types of crops on a small area
    a) I and II only
    b) I and III only
    c) IIand III only
    d) I ,II and III only

  • 2. Microorganisms: Friend and Foe - Quiz

    1. The vector of malaria fever is :
    a) culex
    b) aedes
    c) anopheles
    d) all of the above

    2. Bacteria are used in experiments to study the effects of changing temperature on the growth of microbes instead of virus because :
    a) virus cannot reproduce outside a host
    b) bacteria reproduce faster than viruses
    c) viruses do not have cells walls
    d) bacteria are larger than viruses

  • 3. Synthetic Fibers and Plastics - Quiz

    1. Plastics find extensive use because:
    a) Plastic is a polymer
    b) It is easily mouldable
    c) It is synthetic
    d) Plastic has a linear arrangement

    2. Which of the following properties of plastic make it most conventient to use ?
    a) It is non-reactive
    b) Light , strong and durable
    c) Easily remouldable
    d) All of the above

  • 4. Materials: Metals and Non-Metals - Quiz

    1. Nonmetals combine with oxygen to produce:
    a) Basic oxide
    b) Acidic oxides
    c) Amphoteric oxide
    d) None of these

    2. Rocksalt is:
    a) KCl
    b) CaCl2
    c) MgCl2
    d) NaCl

  • 5. Coal and Petroleum - Quiz

    1. Which of the following is not a renewable source of energy ?
    a) Coal
    b) Wood
    c) Cow dung
    d) Agriculture waste

    2. Renewable sources of energy are produced in nature :
    a) biennial
    b) annually
    c) continuously
    d) quarterly

  • 6. Combustion and Flame - Quiz

    1. The disadvantages of incomplete combustion is /are :
    a) unburnt carbon gets released
    b) air is polluted
    c) may cause respiratory problems
    d) all of the above

    2. Fire is extinguished by:
    a) Removing all combustible substance
    b) Cutting off supply of air
    c) Cooling the burning substance
    d) All of these

  • 7. Conservation of Plants and Animals - Quiz

    1. Which of the following is NOT true regarding the importance of wild life ?
    a) Ecological value
    b) Non - commercial
    c) Scientific value
    d) Aesthetic value

    2. Which of the following show a modern technology measures used to preserve and conserve the environment??
    a) Converting industrial wastes into biogas
    b) Using leaded petrol in motor vehicles
    c) Practising crop rotation
    d) Using machines in agriculture industry

  • 8. Cell — Structure and Functions - Quiz

    1. DNA and RNA are found in the:
    a) Cell wall
    b) Nucleus
    c) Cell sap
    d) Vacuole

    2. Which of the following cell organelle is not membrane bound ?
    a) Mitochondria
    b) Lysosomes
    c) Spherosomes
    d) Ribosomes

  • 9. Reproduction in Animals - Quiz

    1. Which of the following structures has an internal wall lined with fingerlike projections ?
    a) Ovary
    b) Vagina
    c) Fallopian tube
    d) Uterus

    2. Which of the following is NOT a characteristic of sexual reproduction??
    a) It involves the fusion of two reproductive cells
    b) The offspring receives its characteristics from one parent only
    c) It is practiced by most organism
    d) Fertilization may take place inside or outside the body of the female

  • 10. Reaching the Age of Adolescence - Quiz

    1. Why do girls grow faster than boys at the age of 12?
    a) Boys reach puberty earlier than girls
    b) Girls reach puberty earlier than boys
    c) Girls normally take more protein at the age of 12
    d) Boys normally consume less food

    2. Arjun was losing weight even though he was taking his meals regularly. He felt thirsty all the time. When the doctor tested Arjun`s urine, the test showed a high concentration of glucose. What disease is Arjun suffering from ?
    a) Goitre
    b) Cancer
    c) Diabetes mellitus
    d) Cirrohsis of liver

  • 11. Force and Pressure - Quiz

    1. A coin flicked across a table will stop, because:
    a) Table exerts a frictional force?
    b) It is heavy
    c) No force is acting on it
    d) Earth attracts the coin

    2. Friction can be increased by:
    a) Making the surfaces rough
    b) Using dry surfaces
    c) Increasing the weight
    d) All of the above

  • 12. Friction - Quiz

    1. The force required to overcome friction at the instant when an object starts moving from rest is a measure of its:
    a) Dynamic friction
    b) Static friction
    c) Sliding friction
    d) Rolling friction

    2. Which of the following statement is CORRECT ?
    a) rolling a body is easier than sliding
    b) sliding body is easier than rolling
    c) dragging body is easier than sliding
    d) dragging body is easier than rolling

  • 13. Sound - Quiz

    1. Quality of sound used to distinguish between :
    a) Noise and Music
    b) Two different vibrating bodies
    c) Tw notes produced by same vibrating body
    d) all of the above

    2. A source is producing 15 oscillation ( waves ) in 3 seconds. Find its frequency?
    a) 15 Hz
    b) 5 Hz
    c) 0.2 Hz
    d) 0.66 Hz

  • 14. Chemical Effects of Electric Current - Quiz

    1. Question
    a) Option A
    b) Option B
    c) Option C
    d) Option D

    2. The process of depositing a layer of any desired metal on another material by passing electric current is called :
    a) electrolysis
    b) electroplating
    c) chromium plating
    d) galvanising

  • 15. Some Natural Phenomena - Quiz

    1. How do cyclones decrease the fertility of the soil in the coastal area?
    a) By dissolving soil and rocks
    b) By flooding the land with saline
    c) By increasing the water table of the place
    d) By decreasing the water table of the place

    2. When a glass rod is rubbed with silk cloth , it acquires positive charge because :
    a) electron are added to it
    b) electrons are removed from it
    c) protons are added to it
    d) protons are removed from it

  • 16. Light - Quiz

    1. A series of fast moving still pictures can create an illusion of movement because:
    a) The eye can focus on very rapidly changing picture
    b) Eye is quicker than the brain
    c) The optical cortex can see through the rapidly moving images
    d) Eye can separate two image only when the interval of separation between them is one-tenth of a second?

    2. The E.N.T. doctors uses a:
    a) Concave mirror
    b) Convex mirror
    c) Plane mirror
    d) Convex lens

  • 17. Stars and the Solar System - Quiz

    1. Orion is a name of:
    a) Star
    b) Constellation
    c) Planet
    d) Galaxy

    2. Satellites revolve in:
    a) Circular and elliptical orbits
    b) Circular and hyperbolic orbits
    c) Elliptical and parabolic orbits
    d) Only in elliptical orbits

  • 18. Pollution of Air and Water - Quiz

    1. Which of the following is a fossil fuel?
    (I) Tar
    (II) Coal
    (III) Petroleum
    a) I only
    b) I and II only
    c) II and III only
    d) I, II and III

    2. Which of the following steps must be adopted by us to contribute towards better waste management ?
    a) Reduce the amount of waste formed
    b) Reuse the waste
    c) Recycle the waste
    d) all of the above