National Science Olympiad Forum By SOF Olympiad Trainer - Page 579

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Subject :NSO    Class : Class 4

Ans 1: (Master Answer)

Class : Class 1
The correct answer is B.

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Subject :NSO    Class : Class 4

Ans 1:

Class : Class 5
the answer is A because it require pull force and others require push force

Ans 2: (Master Answer)

Class : Class 1
The correct answer is A.

Ans 3:

Class : Class 8

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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 5
72 times

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Subject :NSO    Class : Class 3

Ans 1:

Class : Class 3
ans is b

Ans 2:

Class : Class 4
D

Ans 3:

Class : Class 5
D

Ans 4:

Class : Class 6
D

Ans 5:

Class : Class 6
D

Ans 6:

Class : Class 6
b

Ans 7:

Class : Class 6

Ans 8:

Class : Class 4
ans is definitely d

Ans 9:

Class : Class 3
ans is definitely

Ans 10:

Class : Class 3
THE SMALL INTESTINE ABSORBS WATER AND MINERALS FROM FOOD, SO THE ANS. SHOULD BE B.

Ans 11:

Class : Class 4
C is the answer

Ans 12:

Class : Class 6
Yes the answer is D.

Ans 13:

Class : Class 6
small intestine does not absorb water it helps to absorb nutrients from blood

Ans 14:

Class : Class 8
Yes , the answer is D .

Ans 15:

Class : Class 3
Answer is definately D

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Subject :NSO    Class : Class 3

Ans 1:

Class : Class 3
B is the right answer.

Ans 2:

Class : Class 9
C is the correct answer because it is the part which food into smaller pieces. Explanation: The food enters in our body. >It reaches to our stomach. >It is broken into pieces. >It reaches to the rectum through large intestine. >It comes out from anus. Oesophagus >stomach >small intestine >large intestine >rectum >anus

Ans 3:

Class : Class 3
Aarush Chakrabortty and Shaunak are correct

Ans 4:

Class : Class 3
c

Ans 5:

Class : Class 3
b

Ans 6:

Class : Class 4
B is right

Ans 7:

Class : Class 4

Ans 8:

Class : Class 6
Small intestine is an organ of digestive system where complete digestion of food occurs and the digested food nutrients are absorbed into blood and sent to all body parts.Hence correct answer : option 'c'

Ans 9:

Class : Class 6

Ans 10:

Class : Class 5
B is the right answer

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Subject :NSO    Class : Class 7

In an experiment demonstrating the evolution of oxygen in Hydrilla, sodium bicarbonate is added to water in the experimental set-up. What would happen if all other conditions are favourable?

A Amount of oxygen evolved decreases as carbon dioxide in water is absorbed by sodium bicarbonate.
B Amount of oxygen evolved decreases as the availability of carbon dioxide increases.
C Amount of oxygen evolved increases as the availability of carbon dioxide increases.
D Amount of oxygen evolved increases as carbon dioxide in water is absorbed by sodium bicarbonate.


but why

Ans 1:

Class : Class 6

Ans 2:

Class : Class 9
it must be a. as amount of oxygen decreases and when searched... gives the same answer

Ans 3:

Class : Class 9
ans is C. because of sodium bicarbonate,the plants get CO2 and perform photosynthesis and give out O2

Ans 4:

Class : Class 5

Ans 5:

Class : Class 8

Ans 6:

Class : Class 7

Ans 7:

Class : Class 8
umm thx everyone

Ans 8:

Class : Class 9
oh. ok.

Ans 9:

Class : Class 7

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Subject :NSO    Class : Class 8

Ans 1:

Class : Class 8
Why does the solution heat up?

Ans 2:

Class : Class 10
The answer is D.

Ans 3:

Class : Class 8
SOF same thing again

Ans 4:

Class : Class 9

Ans 5:

Class : Class 5
Solution heats up

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Subject :NSO    Class : Class 8

Ans 1: (Master Answer)

Class : Class 1
The correct answer is C.

Ans 2:

Class : Class 9
The correct answer is : C.

Ans 3:

Class : Class 8
'C'- they are inflammable substances

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Subject :NSO    Class : Class 8

Read the given statements and mark the appropriate answer.
Statement 1 : Polyester is synthesised from petrochemicals by linking ester units.
Statement 2 : Polyester is a natural fibre.

A Both statements 1 and 2 are true and statement 2 is the correct explanation of statement 1.
B Both statements 1 and 2 are true but statement 2 is not the correct explanation of statement 1.
C Statement 1 is true and statement 2 is false.
D Both statements 1 and 2 are false.


Ans 1:

Class : Class 8

Ans 2:

Class : Class 8
'C'- Statement 1 is true and statement 2 is false

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Subject :NSO    Class : Class 3

Ans 1: (Master Answer)

Class : Class 1
The correct answer is A.

Ans 2:

Class : Class 7
correct ans: A

Ans 3:

Class : Class 8
The correct is A.

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