National Science Olympiad Forum By SOF Olympiad Trainer

Vidit marwaha from Cambridge international school , Jalandhar

Subject :NSO Class : Class 5

Which of the following statements is incorrect regarding different layers of soil?

A Soil is made up of gravel, sand, humus, water and clay particles.
B Topsoil is rich in organic matter.
C Roots of trees may grow till subsoil.
D Bedrock contains lot of water and humus.

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Ans 1:

Sanskriti Nagar from Rose Bud Academy, khagaria

Class : Class 5

D is the answer

Ans 2:

SIDDHARTH UPADHYAY from KENDRIYA VIDYALAYA EZHIMALA, KANNUR

Class : Class 4

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Ashi Goyal from Sacred heart convent school,raikot road,barnala, punjab

Subject :NSO Class : Class 5

Four burning sticks are placed into different containers P, Q, R and S containing oxygen, carbon dioxide, nitrogen and air respectively. The observations are then noted down. Which of these observations is correct?

--------Container------------------Observation
AP------------------The glowing stick is extinguished immediately.
BQ------------------The glowing stick bursts into flame.
CR------------------The glowing stick bursts into flame.
DS------------------The glowing stick continues to glow for a while.

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vibhu mehrotra from Vidyashilp Academy, bangalore

Subject :NSO Class : Class 7

Mr Roshan, class 11 teacher took various solutions of equal strength and mixed them in different test tubes as shown in the figure.

He asked the students to find the incorrect statement about the given experiment.

ABlue litmus solution turns red in test tubes 1 and 3.
BTurmeric solution turns red in test tube 1.
CChina rose indicator turns dark pink in test tubes 2 and 4.
DPhenolphthalein remains colourless in test tubes 2 and 4.

the answer given at A does not seem correct as solution in 1 will become basic.does any one have any comments?

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Anuj Sandesh Kanekar from Shrimant Maisaheb Bavadekar Academy, Kolhapur

Subject :NSO Class : Class 6

Which among these children made an incorrect statement?

A
B
C
D

View All Answers (9)

Ans 1:

Rishit from The Shri Ram school , New Delhi

Class : Class 8

It is A

Ans 2:

Agasthya S Ramkumar from Oakridge Internatioal School, Hyderabad

Class : Class 7

The answer is clearly Ait is a no brainer

Ans 3:

Viraaj from Mount litera zee school, Hyderabad

Class : Class 7

it should be A

Ans 4:

Punya Paras Sundrani from Anand Niketan , Ahmedabad

Class : Class 7

very bad

Ans 5:

Agasthya S Ramkumar from Oakridge Internatioal School, Hyderabad

Class : Class 7

what??????

Ans 6:

SITANSHU from SVKM SCHOOL, DHULE

Class : Class 7

Ans 7:

Sharanya from Holy Cross School Agartala, Agartala

Class : Class 7

Ans 8:

Fellah Thashin from MS Dhoni global school , Hosur

Class : Class 6

A only. it never talked about camel. check solution.

Ans 9:

Rishit from The Shri Ram school , New Delhi

Class : Class 8

so dumb

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Ritwic Verma from The Shri Ram School Moulsari, New Delhi

Subject :NSO Class : Class 7

A food chain in an aquarium is shown here.

If the snakeheads were removed, which graph shows the changes in the population of organisms in the aquarium?

A
B
C
D

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Aneesh Balaji from BVBARR school, Hyderabad

Subject :NSO Class : Class 3

The girl in the given picture is using trolley to overcome _________.

A The force of attraction between the Earth and the girl
B The force of attraction between the Earth and the trolley
C The force of friction between the trolley and the ground
D The force of friction between the girl and the ground

c

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Ans 1:

Aneesh Balaji from BVBARR school, Hyderabad

Class : Class 9

c

Ans 2:

Vinay Dev Jhari from Delhi Public School, Noida

Class : Class 4

Ans 3:

Abhigyan Sinha from Podar International School, Powai, Mumbai, Mumbai

Class : Class 7

Ans 4:

Yashaswin from KV afs begumpet, Hyderabad

Class : Class 4

c

Ans 5:

ANSHUL GAJJAR from PODAR INTERNATIONAL SCHOOL, AHMEDABAD

Class : Class 3

C

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Aneesh Balaji from BVBARR school, Hyderabad

Subject :NSO Class : Class 3

Which of the following statements are correct?
(i) Safety means being careful and avoiding accidents only while walking on the road.
(ii) There are rules and signs for safety of people on the ship.
(iii) We must use footpath for walking and cyclists must keep to their left.
(iv) We must cross the road as we like anywhere and everywhere.

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

banda

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Ans 1:

Aneesh Balaji from BVBARR school, Hyderabad

Class : Class 9

b

Ans 2:

ANSHUL GAJJAR from PODAR INTERNATIONAL SCHOOL, AHMEDABAD

Class : Class 3

D

Ans 3:

SIDDHARTH SOMANI from Vibgyor High, Mumbai

Class : Class 5

B

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Aneesh Balaji from BVBARR school, Hyderabad

Subject :NSO Class : Class 3

Read the given statement and select the correct option regarding X and Y.
X has fixed volume, no definite shape and does not cast a shadow whereas Y has fixed volume, definite shape and casts a shadow.

A X could be milk whereas Y could be glass.
B X could be water whereas Y could be wood.
C X could be mustard oil whereas Y could be iron sheet.
D X could be wood whereas Y could be water.

b

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Ans 1:

Hargun Wadhwa from Manav Rachna International School, Sector 46 Gurgaon

Class : Class 4

Ans 2:

ANSHUL GAJJAR from PODAR INTERNATIONAL SCHOOL, AHMEDABAD

Class : Class 3

B

Ans 3:

Aneesh Balaji from BVBARR school, Hyderabad

Class : Class 9

b

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Aneesh Balaji from BVBARR school, Hyderabad

Subject :NSO Class : Class 3

X is connected to all the other parts of the body through the Y which contains thin, thread-like tubes that run all around the body called Z. Select the option which correctly identifies X, Y and Z.

	X	Y	Z
A	Nerve	Brain	Spinal cord
B	Spinal cord	Brain	Skull
C	Brain	Spinal cord	Nerves
D	Spinal cord	Skull	Brain

c

View All Answers (3)

Ans 1:

ANSHUL GAJJAR from PODAR INTERNATIONAL SCHOOL, AHMEDABAD

Class : Class 3

C

Ans 2:

Aneesh Balaji from BVBARR school, Hyderabad

Class : Class 9

c

Ans 3:

Aneesh Balaji from BVBARR school, Hyderabad

Class : Class 9

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Aneesh Balaji from BVBARR school, Hyderabad

Subject :NSO Class : Class 3

Which of the following is correct regarding the characteristics of oxygen?

	Definite shape	Definite volume	Compressible
A	Yes	No	No
B	No	Yes	No
C	Yes	No	Yes
D	No	No	Yes

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Ans 1:

Advika Narkar from The Shishukunj International School, Jhalaria Campus, Indore

Class : Class 8

B

Ans 2:

Aryan Agarwal from OWIS , Bengaluru

Class : Class 3

d

Ans 3:

ANSHUL GAJJAR from PODAR INTERNATIONAL SCHOOL, AHMEDABAD

Class : Class 3

D

Ans 4:

Aneesh Balaji from BVBARR school, Hyderabad

Class : Class 9

b

Ans 5:

Aneesh Balaji from BVBARR school, Hyderabad

Class : Class 9

d

Ans 6:

Ibrahim Aslam from uttam, Ghaziabad

Class : Class 6

Bb

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