National Science Olympiad Forum By SOF Olympiad Trainer

Ambati Daivik from Kendriya Vidyalaya, Dharwad

Subject :NSO Class : Class 7

The given graph shows comparative account of temperature range in four habitats (P, Q, R and S). Which of the following can be inferred from the given graph?
(i) Animals inhabiting P may show starling colouration and arboreal adaptations.
(ii) Animals inhabiting Q have thick lips and leathery skin.
(iii) Plants present in S may have thick fleshy photosynthetic stems and leaves modified into spines.
(iv) Animals inhabiting S possess thick layer of subcutaneous fat and have very small body appendages as compared to animals inhabiting Q and R.
(v) Plants like Spruce, Acacia and Opuntia are commonly found in habitat P.
(vi) Animals found in R may show hibernation or seasonal migration.

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

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Dhairya Vinayak from Loyola High School, Patna

Subject :NSO Class : Class 7

Which of the following processes occurs during inspiration?

ARelaxation of diaphragm muscles and increase in size of chest cavity.
BContraction of diaphragm muscles and increase in size of chest cavity.
CRelaxation of diaphragm muscles and decrease in size of chest cavity.
DContraction of diaphragm muscles and decrease in size of chest cavity.

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Ans 1:

Joshua Sen from Montfort Senior Secondary School, Roorkee

Class : Class 10

inspirationwhat

Ans 2:

kartick Somasundaram from san academy, chennai

Class : Class 1

inspiration means inhalation

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Sashwat Pattnaik from NPS BSK, Bangalore

Subject :NSO Class : Class 7

A car at 7:30 am is moving at a constant speed of 4 km min^–1 and an odometer reading recorded is 28568 km. What would be the odometer reading at 9:15 am?

A 28673 km
B 28988 km
C 29255 km
D 28568 km

Answer is B

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Daksh Singh from Sanskrit School Undri , PUNE

Subject :NSO Class : Class 3

Which of the following statements is INCORRECT?

A We should allow sunlight to enter our house because it helps to kill germs.
B We should put wire mesh on the windows to stop the entry of dust and light.
C We should welcome our guests in the living room of our house.
D We should use bricks, cement, etc., to make our permanent houses as they make a house strong.

the correct answer is B

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Ans 1:

Daksh Singh from Sanskrit School Undri , PUNE

Class : Class 3

the answer is B

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Devina kashyap from TPS, Mumbai

Subject :NSO Class : Class 5

Select the correct option regarding the given food web.

A The energy transferred from R to S is higher than energy transferred from Q to S.
B Q, T and W are the herbivores in this food web.
C There are 5 food chains in this food web.
D If S is removed from this community, then population of Q will increase but that of R will decrease.

D should be the correct answer

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Ans 1:

Sivashankar from ,

Class : Class 5

C I s correct

Ans 2:

Chandradeep Kumar from ,

Class : Class 5

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Dishita Santosh Walujkar from Nutan English School, Kurduwadi

Subject :NSO Class : Class 4

Manoj crossed out 'mushroom' from the given group because he felt that it did not belong to this group. Which of the following statements support Manoj’s conclusion?

A. Mushroom is a plant while the rest are not.
B. Mushroom is a fungus while the rest are not.
C. Mushroom feeds on decaying things while the rest do not.
D. Mushroom cannot make its own food while the rest can.

AB and C only
BA, B and D only
CA, C and D only
DB, C and D only

DDDDDDDDDDDDDDDDD

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Ans 1:

Dishita Santosh Walujkar from Nutan English School, Kurduwadi

Class : Class 7

D

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Dishita Santosh Walujkar from Nutan English School, Kurduwadi

Subject :NSO Class : Class 4

If Moon was observed on 7th July then, Moon will be observed on _______.

A15th July
B28th July
C30th July
D21st July

DDD

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Ans 1:

SHUVRA MAITRA from THE HERITAGE , KOLKATA

Class : Class 4

Ans 2:

Dishita Santosh Walujkar from Nutan English School, Kurduwadi

Class : Class 7

D

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Dishita Santosh Walujkar from Nutan English School, Kurduwadi

Subject :NSO Class : Class 4

In which of the following cases, the person is NOT doing any work in terms of science?

ARohan is throwing a ball.
BSukriti is standing while carrying her school bag on her shoulders.
CVidushi is trying to move a tree by pushing it.
DBoth B and C

D

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Ans 1:

Dishita Santosh Walujkar from Nutan English School, Kurduwadi

Class : Class 7

D

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Dishita Santosh Walujkar from Nutan English School, Kurduwadi

Subject :NSO Class : Class 4

Select the activity which is different from the other three based on the types of force involved.

AA person climbing up a mountain using rope
BMaking chapati out of dough
CLifting a heavy bag kept on floor
DDrawing water out of well using rope

B