National Science Olympiad Forum By SOF Olympiad Trainer - Page 203

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Subject :NSO    Class : Class 8

As proved by many studies greenhouse effect is rapidly increasing because of increase in concentration of carbon dioxide. In the given graph the increase in carbon dioxide concentration is shown. What could be X corresponding to it?


(i) Rate of photosynthesis in plants
(ii) pH of the oceans
(iii) Water level of ocean
(iv) Average global temperature of Earth

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


There should be an option for (ii), (iii),

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Subject :NSO    Class : Class 1

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Subject :NSO    Class : Class 5

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Subject :NSO    Class : Class 3

Ans 1:

Class : Class 3

Ans 2:

Class : Class 6
only D is correct

Ans 3:

Class : Class 6
plastic is or not flexible. It depends on the type of plastic material

Ans 4:

Class : Class 6
no

Ans 5:

Class : Class 3

Ans 6:

Class : Class 5
Both (A) and (D) are correct.

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Subject :NSO    Class : Class 6

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Subject :NSO    Class : Class 8

Match different terms in column I with their related description in column II and select the correct option from the codes given below.

Column I Column II
(A) Weeding (i) Loosening and turning of soil
(B) Threshing (ii) Removing unwanted plants from a field
(C) Tilling (iii) Cutting and gathering of mature crop
(D) Harvesting (iv) Separation of grain from the chaff


A (A) - (i), (B) - (iii), (C) - (ii), (D) - (iv)
B (A) - (ii), (B) - (i), (C) - (iv), (D) - (iii)
C (A) - (ii), (B) - (iv), (C) - (i), (D) - (iii)
D (A) - (iv), (B) - (iii), (C) - (i), (D) - (ii)


Ans 1:

Class : Class 8

Ans 2:

Class : Class 8
BUT IN THE SYPNOSIS PLOUGHING IS DEFINED AS THE PROCESS OF LOOSENING AND TURNING OF SOIL

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Subject :NSO    Class : Class 9

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Subject :NSO    Class : Class 1

Ans 1:

Class : Class 3
Triangles are 23 not 20.

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Subject :NSO    Class : Class 1

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Subject :NSO    Class : Class 5

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