National Science Olympiad Forum By SOF Olympiad Trainer - Page 274

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Subject :NSO    Class : Class 5

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Subject :NSO    Class : Class 6

Ans 1:

Class : Class 6
answer is C reason ; magnet :p x point is north pole because it repeled to north pole and other one attract to it then it is south pole .In magnet Q :point x attracted to north pole of real magnet and y reppled then both are said to be magnet.

Ans 2:

Class : Class 9
yes arunav you are right

Ans 3:

Class : Class 9
vasu, no need to apply properties. The options which have both pulled and repelled , are magnet

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Subject :NSO    Class : Class 8

Match column I with column II and select the correct option from the codes given below.

Column I Column II
(A) A non-metal, essential for respiration (i) Graphite
(B) A non-metal, the source of energy in Sun (ii) Silicon
(C) A non-metal, good conductor of electricity (iii) Oxygen
(D) A non-metal, used in semiconductors (iv) Hydrogen


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


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Subject :NSO    Class : Class 4

Refer to the given figure representing integration of different human systems X, Y and Z. Select the option that correctly identifies these systems.


AX - Digestive system Y - Circulatory system Z - Respiratory system
BX - Respiratory system Y - Circulatory system Z -Digestive system
CX - Circulatory system Y - Digestive system Z -Respiratory system
DX - Digestive system Y - Respiratory system Z -Circulatory system


Ans 1:

Class : Class 6
Please someone tell me the answer

Ans 2:

Class : Class 7
give solution

Ans 3:

Class : Class 6

Ans 4:

Class : Class 4
the correct option is : A ]

Ans 5:

Class : Class 6
SOLUTION PLS

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Subject :NSO    Class : Class 4

Ans 1:

Class : Class 5
give solution please

Ans 2:

Class : Class 4
Giveso lutionscie nceolymp iad

Ans 3:

Class : Class 7
giveslution

Ans 4:

Class : Class 6

Ans 5:

Class : Class 6

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Subject :NSO    Class : Class 5

Ruchi categorised animals on the basis of their body coverings. She made three groups and by mistake placed one wrong member in each group. Identify the wrong member of each group and select the correct option.
Group I - Snake, Lizard, Crab
Group II - Sloth, Platypus, Salmon
Group III - Penguin, Pigeon, Grasshopper

ACrab of group I should be interchanged with grasshopper of group III.
BSalmon of group II should be replaced with toad.
CPlatypus of group II should be interchanged with pigeon of group III.
DGrasshopper of group III should be replaced with parakeet.


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Ans 1: (Master Answer)

Class : Class 1

D

In group III, body of penguin and pigeon is covered with feathers. Similarly body of parakeet is also coverd with feathers. So, grasshopper of group III should be replaced with parakeet.


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Subject :NSO    Class : Class 8

Ans 1:

Class : Class 9
Yes IUCN maintains the Red Data Book, not the WCU. Please look into it

Ans 2:

Class : Class 6

Ans 3:

Class : Class 8
It’s IUCN that maintains red data book

Ans 4:

Class : Class 9
Even I think so As the red data book is maintained with IUCN not WCU

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Subject :NSO    Class : Class 7

Ans 1:

Class : Class 8
The answer is D.. The whole diagram is only showing the gynoecium or the female part of the flower only, so B is correct, as you got confused in..

Ans 2:

Class : Class 3
All of the options are correct.

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Subject :NSO    Class : Class 6

Ans 1:

Class : Class 9

Ans 2:

Class : Class 6

Ans 3:

Class : Class 6
Answer is D neem.

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Subject :NSO    Class : Class 6

Study the given experimental set-up and select the correct observation.


AA homogeneous mixture will be formed in test tubes 4 and 5.
BA heterogeneous mixture will be formed in test tubes 2 and 3 and solute particles will settle at the bottom after some time if left undisturbed.
CComponents in test tubes 5 and 6 are too small in size and hence cannot be separated by filtration.
DA heterogeneous mixture is formed in test tubes 1 and 2 and solute particles will float on the surface of water.


can anyone explain the solution

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