National Science Olympiad Forum By SOF Olympiad Trainer - Page 71

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Subject :NSO    Class : Class 7

Ans 1:

Class : Class 7
A and B are the same in the option and when I highlighted B it is showing option A

Ans 2:

Class : Class 7
A and B are the same.

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Subject :NSO    Class : Class 7

Refer to the given figures of blood cells and select the correct statements regarding X, Y and Z.


(i) X plays a key role in transporting waste carbon dioxide from the tissues to the lungs.
(ii) The pigment present in Z absorbs oxygen and transports it to the cells all over the body.
(iii) X is able to move on their own.
(iv) Y helps the blood to clot whenever there is a wound on the body.
(v) Y is important part of our immune system.
(vi) Z produces special protein substances, i.e., antibodies that protect us from infection.

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


figure not clear at all

Ans 1:

Class : Class 8
figure is not at all clear i cant identify!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

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Subject :NSO    Class : Class 3

Ans 1:

Class : Class 3
C

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Subject :NSO    Class : Class 7

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Subject :NSO    Class : Class 7

The rain containing excess of acids is called an acid rain. Acid rain can cause damage to buildings, historical monuments, plants and animals. Where do these acids come from?

AAcids like carbonic acid, sulphuric acid and nitric acid are already present in the rain.
BRain drops become acidic by combining with acids present in air.
CAcids present in rain drops become active on coming in contact with atmosphere.
DAir pollutants like CO2, SO2, NO2 dissolve in rain drops to form acids.


k

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Subject :NSO    Class : Class 6

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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 8
Mumbai

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Class : Class 5

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Subject :NSO    Class : Class 9

Ans 1:

Class : Class 9

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Subject :NSO    Class : Class 8

Ans 1:

Class : Class 9

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Subject :NSO    Class : Class 7

Refer to the given diagrammatic representation of distribution of water on Earth and select the correct statements for X, Y and Z.

(i) X is a persistent body of dense ice that is constantly moving under its own weight.
(ii) Y is found below the water table and rainwater is its main source.
(iii) Z is an important source of water to the perennial rivers.

A (i) and (ii) only
B (ii) and (iii) only
C (i) and (iii) only
D (i), (ii) and (iii)


Ans 1:

Class : Class 9

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