National Science Olympiad Forum By SOF Olympiad Trainer - Page 274
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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:

Ashutosh Baral from mother public school , Bhubaneswar
Class : Class 5

Ans 2:

Advika Narkar from The Shishukunj International School, Jhalaria Campus, Indore
Class : Class 7
How it is C?Malaria is a water-borne disease spread by mosquitoes.They come near polluted water and may leave infectious germs.

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:

ARUNAV from DPS VINDHYANAGAR, VINDHYANAGAR
Class : Class 9
vasu, no need to apply properties. The options which have both pulled and repelled , are magnet

Ans 2:

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

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:

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

Ans 2:

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

Ans 3:

Soumyajit Das from Hariyana Vidya Mandir, NORTH 24 PARGANAS
Class : Class 6
SOLUTION PLS

Ans 4:

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

Ans 5:

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

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

Ans 1:

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

Ans 2:

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

Ans 3:

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

Ans 4:

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

Ans 5:

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

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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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Amol Athawale from WoodRidge High, aurangabad
Subject :NSO    Class : Class 8

Ans 1:

Aditya Karri from Ganges School, Hyderabad
Class : Class 9
Yes IUCN maintains the Red Data Book, not the WCU. Please look into it

Ans 2:

Amol Athawale from WoodRidge High, aurangabad
Class : Class 6

Ans 3:

Anshuman D from MVM, Hyderabad
Class : Class 9
Even I think so As the red data book is maintained with IUCN not WCU

Ans 4:

Chatresh ramasai gudi from Bgsnps , Bangalore
Class : Class 8
It’s IUCN that maintains red data book

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ASHISH K DIXIT from JASPAL KAUR PUBLIC SCHOOL, NEW DELHI
Subject :NSO    Class : Class 7

Ans 1:

Mrittika Roy from DPS Ruby Park, Kolkata
Class : Class 3
All of the options are correct.

Ans 2:

Gauri Singh from St Johns School Marhauli, Varanasi
Class : Class 8
The answer is D.. The whole diagram is only showing the gynoecium or the female part of the flower only, so B is correct, as you got confused in..

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