National Science Olympiad Forum By SOF Olympiad Trainer - Page 307
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Amol Athawale from WoodRidge High, aurangabad
Subject :NSO    Class : Class 8

Ans 1:

Gaurish Singla from DPS School Sector 19, Faridabad
Class : Class 8

Ans 2:

Vartika Agarwal from Phoenix world school, Pune
Class : Class 9
yes

Ans 3:

Sreevatsa Rajesh from Indian School Al Maabella, Oman
Class : Class 8
SHORT STRECHED AND THIN STRINGS OF GUITAR PRODUCE NOTE OF HIGH PITCH AND VICE VERSA

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Aanya Mehta from Gems Modern Academy, South City -2, Gurgaon, Gurgaon
Subject :NSO    Class : Class 4

Ans 1:

Aanya Mehta from Gems Modern Academy, South City -2, Gurgaon, Gurgaon
Class : Class 4
4 ans is D cause if we throw untreated industrial wastes in water bodies they will get polluted and we won t be able to drink it

Ans 2:

TARA NAUTIYAL from CONVENT OF JESUS AND MARY, DEHRADUN
Class : Class 4
d is the correct answer because if we throw untreated industrial waste it harms the water we drink

Ans 3:

Ayushman Atreya from Little Heart Toddlers Academy, Angul
Class : Class 3
hhjj

Ans 4:

Ayushman Atreya from Little Heart Toddlers Academy, Angul
Class : Class 3

Ans 5:

Ryan from YBIS , SINGAPORE
Class : Class 5

Ans 6:

jathin from national public school chikkabanavara, banglore
Class : Class 4
the correct answer is D because if we throw untreated industrial waste the water bodies the water might get polluted and cannot be safe for drinking and for our uses as it can cause some harmful diseases like cholera and jaundice and also harms the plants and animals in the water

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SWARIT JAIN from DPS Greater Noida, GREATER NOIDA
Subject :NSO    Class : Class 4

Ans 1:

Dishita Santosh Walujkar from Nutan English School, Kurduwadi
Class : Class 7
B

Ans 2:

jathin from national public school chikkabanavara, banglore
Class : Class 4
the correct answer is : B

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Shreya Shruti from Airforce school , Bengaluru
Subject :NSO    Class : Class 3

Read the discussion given below. Which option holds true regarding this discussion?

Renu : Humus present in top layer of soil is good for plant growth.
Rashmi : Water cycle involves continuous processes of evaporation and condensation.
Sanjay : Drinking water polluted with wastes from sewage and homes causes diseases like malaria.
Deetya : Matter is anything that has mass and occupies space.

AOnly Sanjay and Deetya made correct statements.
BRenu made an incorrect statement while Rashmi and Sanjay made correct statements.
CRashmi, Deetya and Renu made correct statements.
DRenu and Sanjay made correct statements while Rashmi and Deetya made incorrect statements.


Water cycle involves evaporation condensation and precipitation.

Ans 1:

Advika Narkar from The Shishukunj International School, Jhalaria Campus, Indore
Class : Class 8
How it is C?Malaria is a water-borne disease spread by mosquitoes.They come near polluted water and may leave infectious germs.

Ans 2:

Ashutosh Baral from mother public school , Bhubaneswar
Class : Class 8

Ans 3:

Shreya Shruti from Airforce school , Bengaluru
Class : Class 7

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ARNESH CHAKRABARTI from RAM MOHAN MISSION, KOLKATA
Subject :NSO    Class : Class 5

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Priyam Bhattacharya from cambridge court high school, jaipur
Subject :NSO    Class : Class 6

Ans 1:

Ayush Chauhan from Modern Public School, Bhiwadi
Class : Class 9
yes arunav you are right

Ans 2:

ARUNAV from DPS VINDHYANAGAR, VINDHYANAGAR
Class : Class 10
vasu, no need to apply properties. The options which have both pulled and repelled , are magnet

Ans 3:

Vasu tyagi from St Joseph's High school, Panvel
Class : Class 6
answer is C reason ; magnet :p x point is north pole because it repeled to north pole and other one attract to it then it is south pole .In magnet Q :point x attracted to north pole of real magnet and y reppled then both are said to be magnet.

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ICHALKARANJI from dkte, ichalkranji
Subject :NSO    Class : Class 8

Match column I with column II and select the correct option from the codes given below.

Column I Column II
(A) A non-metal, essential for respiration (i) Graphite
(B) A non-metal, the source of energy in Sun (ii) Silicon
(C) A non-metal, good conductor of electricity (iii) Oxygen
(D) A non-metal, used in semiconductors (iv) Hydrogen


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


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Saarth Agrawal from Podar International School , Mumbai
Subject :NSO    Class : Class 4

Refer to the given figure representing integration of different human systems X, Y and Z. Select the option that correctly identifies these systems.


AX - Digestive system Y - Circulatory system Z - Respiratory system
BX - Respiratory system Y - Circulatory system Z -Digestive system
CX - Circulatory system Y - Digestive system Z -Respiratory system
DX - Digestive system Y - Respiratory system Z -Circulatory system


Ans 1:

jathin from national public school chikkabanavara, banglore
Class : Class 4
the correct option is : A ]

Ans 2:

Saarth Agrawal from Podar International School , Mumbai
Class : Class 6
Please someone tell me the answer

Ans 3:

Soumyajit Das from Hariyana Vidya Mandir, NORTH 24 PARGANAS
Class : Class 7
SOLUTION PLS

Ans 4:

Arnav Raj Sharma from GEMS International School the ultra master mega, Gurgaon
Class : Class 7
give solution

Ans 5:

Saarth Agrawal from Podar International School , Mumbai
Class : Class 6

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Saarth Agrawal from Podar International School , Mumbai
Subject :NSO    Class : Class 4

Ans 1:

Arnav Raj Sharma from GEMS International School the ultra master mega, Gurgaon
Class : Class 7
giveslution

Ans 2:

RAGHAV VARSHNEY from CITY MONTESSORI SCHOOL GOMTINAGAR LUCKNOW, Lucknow
Class : Class 6

Ans 3:

Saarth Agrawal from Podar International School , Mumbai
Class : Class 6

Ans 4:

Aarya Ranjan from Chrysalis High Varthur, bangalore
Class : Class 4
solution please

Ans 5:

Ishan Manjith from Loyola ICSE, THIRUVANANTHAPURAM
Class : Class 4
Giveso lutionscie nceolymp iad

Ans 6:

SS from meridian, hyderabad
Class : Class 5
give solution please

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Syed Mohammad Hussain from ISAM, Muscat
Subject :NSO    Class : Class 5

Ruchi categorised animals on the basis of their body coverings. She made three groups and by mistake placed one wrong member in each group. Identify the wrong member of each group and select the correct option.
Group I - Snake, Lizard, Crab
Group II - Sloth, Platypus, Salmon
Group III - Penguin, Pigeon, Grasshopper

ACrab of group I should be interchanged with grasshopper of group III.
BSalmon of group II should be replaced with toad.
CPlatypus of group II should be interchanged with pigeon of group III.
DGrasshopper of group III should be replaced with parakeet.


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Ans 1: (Master Answer)

Admin from revisewise, Noida
Class : Class 1

D

In group III, body of penguin and pigeon is covered with feathers. Similarly body of parakeet is also coverd with feathers. So, grasshopper of group III should be replaced with parakeet.


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