National Science Olympiad Forum By SOF Olympiad Trainer - Page 29

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Subject :NSO    Class : Class 9

The given graphs show the amount of different antibodies P and Q in the blood of a person during a pathogenic infection and after complete recovery.

What could be inferred from the given graphs?

A The person might have suffered from two pathogenic infections simultaneously for which his body produced antibodies P and Q.
B The person has acquired artificial active immunity for pathogen against which his body produced antibody Q.
C This time the person suffered from the pathogenic infection for which his body produced antibody Q.
D The person has acquired passive immunity for both the pathogens for which his body produced antibodies P and Q.


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Subject :NSO    Class : Class 7

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Subject :NSO    Class : Class 8

A soft iron nail, XY, is placed within a current carrying solenoid for a very short while as shown in figure.When the nail is removed from the solenoid, which of the following statements is true?


AEnd X will be able to repel a similar iron nail which has been magnetised.
B End X will be attracted to the North-seeking pole of a bar magnet.
C End Y will be repelled by the South-seeking pole of a bar magnet.
DEnd Y will point to the North pole of the Earth when freely-suspended.


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Subject :NSO    Class : Class 6

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Subject :NSO    Class : Class 6

Which of the following statements are correct?
(i) Changes in our surroundings that make us respond is called adaptation.
(ii) The process of getting rid of body wastes by the living organisms is known as reproduction.
(iii) Breathing is a part of a process called respiration.
(iv) Aquatic animals have streamlined bodies to help them use oxygen dissolved in water.
(v) Desert plants have leaves to reduce loss of water from the leaves through transpiration.

A(i) and (ii)
B(iii) and (v)
C(iii), (iv) and (v)
D(i), (iii) and (iv)


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Subject :NSO    Class : Class 4

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Subject :NSO    Class : Class 4

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Subject :NSO    Class : Class 4

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Subject :NSO    Class : Class 4

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Subject :NSO    Class : Class 7

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