National Science Olympiad Forum By SOF Olympiad Trainer

janumirajgave@gmail.com from Podar international school, Kalyan

Subject :NSO Class : Class 7

Which one of the following graphical representations correctly represents the formation of a real, inverted and enlarged image by a concave mirror?

A

B

C

D

Ans 1:

Archi Mangla from Mohters Global School, Dehi

Class : Class 7

I WANT TO KNOW THE REASON FOR THE ANSWER "B"

Ans 2:

Aditya kumar from Sapphire International School, Noida

Class : Class 8

ITS OPTION " B "

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huzaifa from kendriye vidayalaya sanghathan, New Delhi

Subject :NSO Class : Class 8

Paint applied to an iron surface prevents the iron from rusting. Which ONE of the following provides the best reason?

AIt prevents nitrogen from coming in contact with the iron
BIt reacts chemically with the iron
CIt prevents carbon dioxide from coming in contact with the iron
DIt prevents oxygen and moisture from coming in contact with the iron

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Ans 1:

Rahul from St xavier public school , Samastipur

Class : Class 8

It prevents oxygen and moisture from coming in cantact with air

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Aishik Biswas from Don Bosco School, Berhampore, Berhampore

Subject :NSO Class : Class 6

Which of the following researcher would be most interested in maintaining a healthy deciduous forest?

ABiochemist
BZoologist
CToxicologist
DEcologist

cunninlinging and sexy

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aakhil from nalanda vidyaniketan, Vijayawada

Subject :NSO Class : Class 5

Mount Fuji volcano erupted few years back. It threw out fine, glass-rich ash into the atmosphere. It thereby distrupted air traffic and caused inconvenience to air travel. It might also erupt again in future. Mount Fuji is an example of

AVulnerable volcanoes
BExtinct volcanoes
CDormant volcanoes
DActive volcanoes.

please check the answer

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Ans 1:

SHREYAS ANDOTRA from RYAN INTERNATIONAL SCHOOL, CHANDIGARH

Class : Class 8

Ans 2:

Bhabani Prasad from Narayan School, Kolkata

Class : Class 6

mt fuji is a dormant volcano. it erupted long back.........

Ans 3:

Ojasvi singh from Christ school, Jasidih

Class : Class 5

It should be C , Mt fuji is a dormant volcano

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aakhil from nalanda vidyaniketan, Vijayawada

Subject :NSO Class : Class 5

An infectious disease is one that is ___________.

Acaused by all bacteria
Btransferred by mosquitoes
Cspread from person to person
Dcaused by a pathogen or its products

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Maanasa Jitendra Vennelakanti from ,

Subject :NSO Class : Class 7

Cross pollination is the process of

ATransfer of pollen grains from anther of one flower to stigma of other flower on different plant of the same species.
BTransfer of pollen grains from anther of one flower to stigma of the same flower.
CTransfer of pollen grains from anther of one flower to stigma of another flower on different plant of different species.
DBoth A and C

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Ans 1:

Aditya kumar from Sapphire International School, Noida

Class : Class 8

ITS OPTION " A "

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Maanasa Jitendra Vennelakanti from ,

Subject :NSO Class : Class 7

Match the numbers (1, 2, and 3) with the letters (P, Q and R) to explain how the mammal shown below is well adapted to its environment.

P - To tear the bark of tree.
Q - Help the animal to remain cool in hot and humid climate.
R - Acts as nose and picks up the food.

A(1) - P, (2) - Q, (3) - R
B(1) - Q, (2) - P, (3) - R
C(1) - R, (2) - Q, (3) - P
D(1) - Q, (2) - R, (3) - P

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Ans 1:

Aditya kumar from Sapphire International School, Noida

Class : Class 8

ITS OPTION "B"

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Dileep Jain from ,

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 to in the statements is __________.

A Circulatory system
B Respiratory system
C Nervous system
D Digestive system

Nervous system

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Ans 1:

RIDHIMA AGARWAL from dps noida, Noida

Class : Class 4

Nervous System The central nervous system CNS is responsible for integrating sensory information and responding accordingly. It consists of two main components: The spinal cord serves as a conduit for signals between the brain and the rest of the body.

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Sagarika Biswas from Sri Krishna Mission School , Agartala

Subject :NSO Class : Class 9

Two balls of different masses have the same kinetic energy. Then the

(A) Heavier ball has greater momentum than the lighter ball

(B) Lighter ball has greater momentum than the heavier ball

(C) Both balls have equal momentum

(D) Both balls have zero momentum.

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Ans 1:

tharun nayak from kb school of excellence , Hyderabad

Class : Class 9

D

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Agastya from Bombay scottish, Mumbai

Subject :NSO Class : Class 3

Which of these works on mechanical energy?

(A)

(B)

(C)

(D)
how is option a correct

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Ans 1:

Nivika from Shri Ram Global School, Bangalore

Class : Class 5

Reallllly Easy

Ans 2:

Amogh from Potdar international school, Mumbai

Class : Class 3

A

Ans 3:

Aryan Goyal from DPS , Dwarka, New Delhi

Class : Class 3

was a 1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 times easy

Ans 4:

RIDHIMA AGARWAL from dps noida, Noida

Class : Class 4

A. Boat

Ans 5:

sanjana from NARAYANA E TECHNO , Chennai

Class : Class 8

toooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooo easy

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