National Science Olympiad Forum By SOF Olympiad Trainer - Page 14

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Subject :NSO    Class : Class 6

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Subject :NSO    Class : Class 6

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Subject :NSO    Class : Class 8

Rohan burned a substance X and collected the evolved vapours in a test tube making sure that they do not escape. Then he added small amount of water to the test tube. The solution so formed turned blue litmus red.
Rahul burned a substance Y, collected the white ash formed and dissolved it in water. The solution so formed turned red litmus blue. Substances X and Y could be respectively

AP and Mg
BCa and P
CMg and S
DS and Mg


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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 5

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Subject :NSO    Class : Class 4

Ans 1:

Class : Class 5
it is D

Ans 2:

Class : Class 4
It’s option A.

Ans 3:

Class : Class 4
how Aadya? HOWWWWWWWWWWWW

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Subject :NSO    Class : Class 3

Read the given statements about a human body system.
1. It consists of brain, spinal cord and nerves.
2. It controls all our actions like seeing, hearing, walking and learning.
The body system referred in the given statements is

ACirculatory system
BRespiratory system
CNervous system
DDigestive system.


Nervous system consists of brain spinal cord and nerves.It also controls all our actions.So it can be reffered as nervous system. so the answer is option C.

Ans 1:

Class : Class 2
It would be nervous system because, nervous system consists of brain, nerves and spinal cord. It also controls our actions like seeing , hearing, walking and learning. so the answer is option nervous system.

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Subject :NSO    Class : Class 4

Refer to the given diagram where X and Y represent substances while P and Q represent organs.

Which of the following best represents organs P and Q; and substances X and Y?

Organ P---Organ Q---Substance X---Substance Y

ASmall intestine---Pancreas---Water---Undigested food
BLarge intestine---Small intestine---Digested food---Water
CLarge intestine---Anus---Digested food---Water
DSmall intestine---Large intestine---Digested food---Undigested food


Ans 1:

Class : Class 4
D

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Subject :NSO    Class : Class 5

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Subject :NSO    Class : Class 4

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Subject :NSO    Class : Class 8

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