National Science Olympiad Forum By SOF Olympiad Trainer - Page 279

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Subject :NSO    Class : Class 8

Ans 1:

Class : Class 8
SHORT STRECHED AND THIN STRINGS OF GUITAR PRODUCE NOTE OF HIGH PITCH AND VICE VERSA

Ans 2:

Class : Class 8

Ans 3:

Class : Class 9
yes

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Subject :NSO    Class : Class 4

Ans 1:

Class : Class 4
the correct answer is D because if we throw untreated industrial waste the water bodies the water might get polluted and cannot be safe for drinking and for our uses as it can cause some harmful diseases like cholera and jaundice and also harms the plants and animals in the water

Ans 2:

Class : Class 4
d is the correct answer because if we throw untreated industrial waste it harms the water we drink

Ans 3:

Class : Class 4
4 ans is D cause if we throw untreated industrial wastes in water bodies they will get polluted and we won t be able to drink it

Ans 4:

Class : Class 5

Ans 5:

Class : Class 3

Ans 6:

Class : Class 3
hhjj

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Subject :NSO    Class : Class 4

Ans 1:

Class : Class 4
the correct answer is : B

Ans 2:

Class : Class 7
B

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Subject :NSO    Class : Class 3

Read the discussion given below. Which option holds true regarding this discussion?

Renu : Humus present in top layer of soil is good for plant growth.
Rashmi : Water cycle involves continuous processes of evaporation and condensation.
Sanjay : Drinking water polluted with wastes from sewage and homes causes diseases like malaria.
Deetya : Matter is anything that has mass and occupies space.

AOnly Sanjay and Deetya made correct statements.
BRenu made an incorrect statement while Rashmi and Sanjay made correct statements.
CRashmi, Deetya and Renu made correct statements.
DRenu and Sanjay made correct statements while Rashmi and Deetya made incorrect statements.


Water cycle involves evaporation condensation and precipitation.

Ans 1:

Class : Class 8

Ans 2:

Class : Class 7

Ans 3:

Class : Class 8
How it is C?Malaria is a water-borne disease spread by mosquitoes.They come near polluted water and may leave infectious germs.

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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 7
give solution

Ans 2:

Class : Class 6
Please someone tell me the answer

Ans 3:

Class : Class 7
SOLUTION PLS

Ans 4:

Class : Class 6

Ans 5:

Class : Class 4
the correct option is : A ]

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Subject :NSO    Class : Class 4

Ans 1:

Class : Class 6

Ans 2:

Class : Class 5
give solution please

Ans 3:

Class : Class 6

Ans 4:

Class : Class 7
giveslution

Ans 5:

Class : Class 4
Giveso lutionscie nceolymp iad

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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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