National Science Olympiad Forum By SOF Olympiad Trainer

Arjun Sankar from PSBB SS School, Chennai

Subject :NSO Class : Class 6

Study the given figure of a plant. Which of the following adaptations are shown by this plant?

(i) Leaves are reduced to spines.
(ii) Stem is green and spongy.
(iii) Roots are very long and reach deep into the soil for absorbing water.

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

cactus has shallow roots to absorb the water which falls on the surface whenever it rains.

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Ans 1:

Kushal from Chirec, Hyderabad

Class : Class 7

no the answer is d because cactus lives in deserts where water is scarce and has long roots to absorb water which is deep under the the ground

Ans 2:

Kushal from Chirec, Hyderabad

Class : Class 7

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Dev Rawat from R D Rajpal School, New Delhi

Subject :NSO Class : Class 8

In which of the following cases the friction is helpful (H) and troublesome (T)?
(A) Lighting a matchstick
(B) Applying the brakes on a cycle
(C) Use a towel to open tightly closed lid of a bottle
(D) Pulling drawer out of a desk

	(A)	(B)	(C)	(D)
A	T	T	H	H
B	H	H	T	T
C	T	T	T	H
D	H	H	H	T

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Ans 1:

Het Aryan from Podar International School , Pune

Class : Class 9

Ans 2:

ALICE from Delhi Public School, UDAIPUR

Class : Class 9

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Dev Rawat from R D Rajpal School, New Delhi

Subject :NSO Class : Class 8

When friction is acting in the direction of P, in which direction do you think the force is applied?

A P
B Q
C R
D S

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Ans 1:

Divyansh Raj from Vidyagyan leadership academy, Rath

Class : Class 8

Force is applied in the direction of R

Ans 2:

Divyansh Raj from Vidyagyan leadership academy, Rath

Class : Class 8

Ans 3:

Divyansh Raj from Vidyagyan leadership academy, Rath

Class : Class 8

Ans 4:

Ayaan jamal from Dddddd, Delhi

Class : Class 5

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Shaurya Veer from Army Public School ASC C and C , Bangalore

Subject :NSO Class : Class 4

Study the given flow chart showing three types of water plant. Some of their features are given below. Select the correct match of the water plants with their respective features.

Features:
(i) They have narrow thin leaves with no stomata.
(ii) Their bodies are like a sponge and have empty spaces filled with air.
(iii) They have plate-like leaves which have stomata on the upper side.

A X - (i), Y - (iii)
B Y - (ii), Z - (i)
C X - (iii), Z - (ii)
D X - (ii), Y - (iii), Z - (i)

Feature (i) describes a fully submerged plants (e.g., Hydrilla), which possess narrow, thin leaves with no stomata. Feature (ii) describes free floating plants (e.g., Eichhornia), which possess spongy parts filled with air. Feature (iii) describes floating leaved plants (e.g., Lotus) which possess plate like floating leaves having stomata on the upper surface.

View All Answers (9)

Ans 1:

Aayush Reddy Bomidika from Delhi Public School Nacharam, Hyderabad

Class : Class 9

it is D

Ans 2:

Ashwak from Cambridge, Jalandhar

Class : Class 9

Answer is D.

Ans 3:

Midhuna from ABCD, Banglore

Class : Class 3

I think correct answer is Cð

Ans 4:

Adithya raj singh from chinmaya international residential school, tirupur

Class : Class 8

Correct answer is a

Ans 5:

Saksham Arora from DPS, Gurugram 102

Class : Class 9

Ans 6:

Saksham Arora from DPS, Gurugram 102

Class : Class 9

Ans 7:

Sashriti Das from Delhi Public School Bangalore North, Bangalore

Class : Class 5

c

Ans 8:

Reyansh Aggarwal from JBCN International, Parel, Mumbai

Class : Class 4

Ans 9:

Midhuna from ABCD, Banglore

Class : Class 3

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Parth Kalumali from Dav Public School Aundh Pune, INDIA

Subject :NSO Class : Class 3

The given graph provides information about noise level in different situations. Which of the following scenarios can create a noise level as indicated on the graph by the letter X? A A plane taking off B A dog barking C Honking of a car D Metro train moving on tracks

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Parth Kalumali from Dav Public School Aundh Pune, INDIA

Subject :NSO Class : Class 3

Amit's father said, "stay at home as son of my son-in-law will come to our home to meet us". Amit will meet with his _____. ACousin BUncle CNephew DBrother

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Aadi Turlapati from Glendale International school, Hyderabad

Subject :NSO Class : Class 5

Gopal compared the mass of three fruits using two weighing balance.

Based on the observations, which of the following statements is Not possible to tell?

AThe orange is lighter than the apple.
BThe apple has the same mass as the pear.
CThe orange is heavier than the pear.
DThe apple has the same volume as the orange.

D is incorrect answer

View All Answers (5)

Ans 1:

Alay Shah from Euro School, Thane

Class : Class 5

Ans 2:

AREEN from BOLTON, HYDERABAD

Class : Class 6

Ans is A because the side in which orange is there is down and the apple's side is up.

Ans 3:

Joe Bipin from National Public School Agra, Bangalore

Class : Class 10

Ans 4:

Archit Raj from Little ANGELS school , Munger

Class : Class 5

D

Ans 5:

Shuvangi Das from Vivekananda mission school, haldia

Class : Class 9

I agree your comments AREEN . They should have options suitable to answer. Thanks for agreeing my decision

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Kushal from Chirec, Hyderabad

Subject :NSO Class : Class 6

Which of the following actions will cause a magnet to lose its magnetic properties?
(i) Heating
(ii) Placing inside an insulator
(iii) Hammering
(iv) Dropping it from some height

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

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Ans 1:

Kushal from Chirec, Hyderabad

Class : Class 7

the answer is d

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Kushal from Chirec, Hyderabad

Subject :NSO Class : Class 6

Study the following information carefully and answer the question :
(i) Six children B, D, C, M, J and K are split into two groups of three each and are made to stand in two rows in such a way that a child in one row is exactly facing a child in the other row.
(ii) M is not at the end of any row and is to the right of J, who is facing C. K is to the left of D, who is facing M.
Who is to the immediate left of B?

AM
BJ
CC
DData inadequate

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Ans 1:

malhar thorve from city internqtional school, satara road, pune

Class : Class 7

i also think ans should be d

Ans 2:

Dushyant Singh from Shree Ram Centenial School, Indore

Class : Class 9

Ans 3:

Kushagra Chaturvedi from Podar International School Chinchwad, Pune

Class : Class 7

Ans 4:

Shreyansh Gupta from MVN, faridabad

Class : Class 7

ans should be D instead of B

Ans 5:

shubham kundu from dps, bangalore

Class : Class 8

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student from school, city

Subject :NSO Class : Class 6

Study the food web shown below.

How is organism P in the food web different from the organisms Q, R, S and T?

AIt causes decomposition.
BIt feeds on plants.
CIt feeds on animals.
DIt can photosynthesize.

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