National Science Olympiad Forum By SOF Olympiad Trainer - Page 273

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Subject :NSO    Class : Class 7

Ans 1:

Class : Class 7

Ans 2:

Class : Class 5

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Subject :NSO    Class : Class 3

Ans 1:

Class : Class 8
A

Ans 2:

Class : Class 3
I AM AGRIM IT IS EASY WRITH LET'S GO

Ans 3: (Master Answer)

Class : Class 1

A

Granite is very hard to break while chalk can be easily powdered using hands.


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Subject :NSO    Class : Class 4

Ans 1:

Class : Class 4
the answer is : C

Ans 2:

Class : Class 4
There is no correct answer to this question.

Ans 3:

Class : Class 8
C C C

Ans 4:

Class : Class 4

Ans 5:

Class : Class 4
the answer is : C

Ans 6:

Class : Class 4
the answer is not c because lizard dont have wings

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Subject :NSO    Class : Class 6

Read the following statements.
(i) Air dissolved in water cannot be removed from it.
(ii) Density of air decreases with increasing altitude.
(iii) Air is an element that surrounds the Earth and makes it hospitable for living organisms.
(iv) Air helps in pollination of several flowers and in the dispersal of seeds.
Which of the above statements are correct?

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


Ans 1:

Class : Class 6

Ans 2:

Class : Class 6

Ans 3:

Class : Class 6
No ans is not D it's B because air is a mixture not an element.

Ans 4:

Class : Class 6
Answer is D.

Ans 5:

Class : Class 9

Ans 6:

Class : Class 6

Ans 7:

Class : Class 6

Ans 8:

Class : Class 10
answer is D, air density decreases on increse in height

Ans 9:

Class : Class 9
ans is not option D as air is not an element , air is a mixture of many elements and compounds......further more statement 2 is correct as air density decreases with increasing altitude i.e air density decreases with increase in height

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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 6

Ans 2: (Master Answer)

Class : Class 1

C

The layer of the Earth, which is made up of solid and molten rocks and contains magnesium and iron is mantle, and is represented by R. Earth's mantle is made up of rock and molten lava containing silicon, iron, magnesium, aluminium, oxygen and other minerals.


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Subject :NSO    Class : Class 6

Which of the following should be done in case of burns?

AWrap a blanket around the burnt parts of the person.
BApply ghee, oil, etc. on the burn.
CCover the burn with thick cloth.
DPour cold water immediately on the burn till the burning sensation stops.


no check in google should not pour ice cold or cold water on burns..............................................................................................................................................................................................................................ISN'T IT???!!

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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
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 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 5

Ans 4:

Class : Class 3
hhjj

Ans 5:

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 6:

Class : Class 3

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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 7
How it is C?Malaria is a water-borne disease spread by mosquitoes.They come near polluted water and may leave infectious germs.

Ans 2:

Class : Class 7

Ans 3:

Class : Class 5

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