National Science Olympiad Forum By SOF Olympiad Trainer - Page 759
  1. Home
  2. /  Forum

User Forum

Ask Your Question
from ,
Subject :NSO    Class : Class 6

Ans 1:

from ,
Class :

Ans 2:

Pratham Dave from GNS, Bangalore
Class : Class 7
It shows that the effort is in between and load and fulcrum are at the ends .

Ans 3:

Satwik Dixit from Christ Academy, Bangalore
Class : Class 8
its definitely a

Ans 4:

Kaashvi Sharma from Bal Bharati Public School, GRHM, New Delhi
Class : Class 8

Ans 5:

Aprameyan Baranidar from Seven senses Montessori, Bengaluru
Class : Class 6
It is A

Ans 6:

Lakshmi from FPS, Bangalore
Class : Class 10
It will not be A because in first class lever the fulcrum lies between load and effort but in hammer effort lies between fulcrum and load

Ans 7:

Aishwarya B from Shantiniketan International School , Hyderabad, HYD
Class : Class 9
I meant c

Ans 8:

Arjun gupta from Dps noida , Noida
Class : Class 7
should be A

Ans 9:

harry potter from hogwarts, hogsmeade
Class : Class 6

Ans 10:

AARAV AGRAWAL from BIRLA DIVYA JYOTI, SILIGURI
Class : Class 8
It is C.. Cuz the fulcrum is at one end..

Ans 11:

Aarya Singh from Indian School Ghubra, Muscat
Class : Class 3
It's A, as in a hammer, the fulcrum, that is the place were the head of the hammer and rod of the hammer meet is in center, the load which is the nail is on one end and the effort we apply is on the other end

Ans 12:

Ritabrata Das from OPJS, Angul
Class : Class 7
It should be both a

Ans 13:

Aishwarya B from Shantiniketan International School , Hyderabad, HYD
Class : Class 9
D

Ans 14:

Ashmi Narkar from The Shishukunj International School, Jhalaria Campus, Indore
Class : Class 9
A means A. Aarya you are right

Post Your Answer

from ,
Subject :NSO    Class : Class 8

Ans 1:

from ,
Class :
Mirage is an optical illusion caused due to refraction of light.

Post Your Answer

from ,
Subject :NSO    Class : Class 6

Post Your Answer

from ,
Subject :NSO    Class : Class 6

Ans 1:

from ,
Class :

Post Your Answer

from ,
Subject :NSO    Class : Class 6

Post Your Answer

Pratibha from Vaels billabong international, Chennai
Subject :NSO    Class : Class 4

Ans 1: (Master Answer)

from ,
Class :
The correct answer is C.

Ans 2:

Abhigyan Sinha from Podar International School, Powai, Mumbai, Mumbai
Class : Class 7
correct answer is C

Ans 3:

from ,
Class :

Ans 4:

k tagore from montessori school, KURNOOL
Class : Class 3
The correct answer is c

Ans 5:

Aarush Pandya from Inventure Academy, Bangalore
Class : Class 8
The correct answer is C because if organism X wipes out all tadpoles in the community, then water insects' population grows with nothing to eat them. The small fish die because they have nothing to eat, and soon the big fish die too.

Ans 6:

Priyanshi from Delhi Public School, Gurugram
Class : Class 4
the correct answer is C

Ans 7:

Rishaan Dixit from DPS Noida, Noida
Class : Class 6
cccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccc

Ans 8:

Manjeet Prajapati from Saint Xavier College BHEL Jhansi , Jhansi
Class : Class 4
In the given food chain, tadpole feeds on water insect and in turn is eaten by small fish. If population of tadpole will decline with time then small fish population will also decrease as former is the food of later. On the other hand, water insect population will be positively affected because in the absence of predator prey population reproduces and flourishes.

Ans 9:

Mihika Talukdar from GARDEN HIGH, KOLKATA
Class : Class 4

Ans 10:

Manan thorat from Podar powai, Mumbai
Class : Class 4
The answer is C

Ans 11:

Gurnoor from Chitkara International School, Chandigarh
Class : Class 5
ans is c

Ans 12:

Ashwak from Cambridge, Jalandhar
Class : Class 9
Aarush , there will be not enough plants to feed so many water insects . So, at a particular time all plants will finish . So , there will be nothing left for the water insects so they will also die !

Ans 13:

Raashid Sarfraz from IIPS, Riyadh
Class : Class 6

Ans 14:

Kriti Bhonsale from Delhi Public School, Bengaluru
Class : Class 5
C

Post Your Answer

from ,
Subject :NSO    Class : Class 3

Ans 1:

from M G M Senior Secondary school Sec-6,
Class : Class 5
A

Ans 2:

from ,
Class :
A

Ans 3:

Advika Narkar from The Shishukunj International School, Jhalaria Campus, Indore
Class : Class 8
Sorry ,answer is A .I gave wrong explanation why .You have told arerespectively, so gas 1 is carbon dioxide and gas 2 is oxygen.You have given the order as 1 and 2 i.e. carbon dioxide and oxygen.So ,we will say it as 2 and 1 i.e oxygen and carbon dioxide .Hence answer is A.

Ans 4:

from ,
Class :
Answer is D because at night plants take in oxygen and give out carbon-di-oxide whereas we humans always take in oxygen and give out carbon-di-oxide.

Ans 5:

SAMRIDDHA PANDA from ST. MONFORT'S SENIOR SECONDARY SCHOOL, BARUIPUR
Class : Class 7

Ans 6:

Advika Narkar from The Shishukunj International School, Jhalaria Campus, Indore
Class : Class 8
ans is A as the order of gases will not change

Ans 7:

Abhijay Saha from Delhi Public School, Megacity, Kolkata
Class : Class 3
We Don't know that plants breath oxygen in night

Post Your Answer

from ,
Subject :NSO    Class : Class 3

Ans 1:

akshitha from Euroschool, Bengaluru
Class : Class 3
i cant understand the second question c] or b]?

Ans 2:

Gaurang Mahesh Mahamunkar from Lodha World School Thane, Thane
Class : Class 4
Figure A can be folded horizontally, figure B can be folded diagonally, figure D can be folded vertically to get their mirror images whereas figure C is asymmetric, so the odd one out is figure C

Ans 3:

Ashmi Narkar from The Shishukunj International School, Jhalaria Campus, Indore
Class : Class 9

Ans 4:

Shivani Shivu Singh from Pawar Public School Chandivali , Mumbai
Class : Class 9

Ans 5:

from ,
Class :
Answer is asymmetrical figure, because all the other figures are symmetrical.

Ans 6:

Ashmi Narkar from The Shishukunj International School, Jhalaria Campus, Indore
Class : Class 9
ANS should be a

Ans 7:

BRIHA PURI from CAMBRIDGE PUBLIC SCHOOL, BANGALORE
Class : Class 3
understood

Ans 8:

Abhijato Chatterjee from Bharatiya Vidya Bhavan, Kolkata, kOLKATA
Class : Class 6
why?

Ans 9:

BRIHA PURI from CAMBRIDGE PUBLIC SCHOOL, BANGALORE
Class : Class 3
nonsense question

Ans 10:

Shivani Shivu Singh from Pawar Public School Chandivali , Mumbai
Class : Class 9

Ans 11:

Tanisha Nath from Clarence Public school Bangalore, Bengaluru
Class : Class 9
why

Ans 12:

Ashmi Narkar from The Shishukunj International School, Jhalaria Campus, Indore
Class : Class 9
The images given in Options A, B and D are symmetrical images. That means all three have at least one line of symmetry. Line of symmetry is any line drawn through the image which divides the image into two exactly equal parts, and these parts are mirror images of each other. A.The part above the red line (line of symmetry) and the 7part below the red line are mirror images of each other.7410`1 B.The parts on both sides of the red line (line of symmetry) are mirror images of each other. C.There can be no line of symmetry that can divide this image into two equal parts which are mirror images of each other. D.The part on the left side of the red line (line of symmetry) and the part on the right side of the red line are mirror images of each other. Hence, Option C is the odd one out.

Ans 13:

Keisha Raj from SVIS Kandivali, Mumbai
Class : Class 6

Ans 14:

Ananya D from Sacred Heart School, Thane
Class : Class 8

Post Your Answer

Mridul Jain from Shishukunj International School Indore, Indore
Subject :NSO    Class : Class 4

Ans 1:

Shariya akhil pathan from kaka's international school, pune
Class : Class 3
explain please

Ans 2:

XXX from SVM, Bangalore
Class : Class 5
please explain how is it c?

Ans 3: (Master Answer)

from ,
Class :

The correct answer is C.


Ans 4:

Shashank Reddy from Gyan Ganga International School, Pune
Class : Class 5
C

Ans 5:

SWARIT JAIN from DPS Greater Noida, GREATER NOIDA
Class : Class 9
C

Ans 6:

Shrinikethan S from Padma Seshadri Bala Bhavan Senior Secondary School, K. K. Nagar,, Chennai
Class : Class 5
how do you all know the correct answer is 'C' when everything seems correct.

Ans 7:

Abhigyan Sinha from Podar International School, Powai, Mumbai, Mumbai
Class : Class 7
correct answer is C

Ans 8:

Goutham from lt, Chennai
Class : Class 4
I. This is so EZ.t can be c as N is on the top and S is down plus when the north recives cold it is hot in the south and when the south is cold it is hot in the north

Ans 9:

Pranav Verma from DPS Pal Road , Jodhpur
Class : Class 4
D is correct

Ans 10:

Vivaan from Rustomjee Cambridge International School and Junior College, Mumbai
Class : Class 6
C

Ans 11:

Ashwak from Cambridge, Jalandhar
Class : Class 9
The answer is C

Ans 12:

Soumyajit Das from Hariyana Vidya Mandir, NORTH 24 PARGANAS
Class : Class 8
please give explanation Admin.

Ans 13:

somesh from Centre point katol road, Nagpur
Class : Class 6
d

Ans 14:

from ,
Class :
it also can be d explain how please admin cant understand

Ans 15:

Aarvi Gosai from The New Tulip International School, Ahemdabad
Class : Class 5
no u DUMMIES! winter should be on the east side of the earth and summer on the west and Goutham this question is sooooo WRONG! and ur wrong Goutham

Post Your Answer

Supreet Birdi from Global Indian International School, Bangalore
Subject :NSO    Class : Class 5

Ans 1:

Soumyaraj Roy from Kendriya Vidyalaya , Thiruvananthapuram
Class : Class 7
SOF is wrong . The answer should be C as Ball and socket joint is only found in arms and legs . It cannot come in the skull . Smita De is also absolutely right .

Ans 2:

Ayushmaan from D, B
Class : Class 5
Nice question

Ans 3:

Ashwak from Cambridge, Jalandhar
Class : Class 9
It's simple

Ans 4:

Riya from Bhavan Vidyalaya, Chandigarh
Class : Class 8
good question sligjhtly tricky

Ans 5:

Agastya Tripathi from dps gurgaon, Gurgaon
Class : Class 4

Ans 6:

Rohan TR from Sri Aurobindo memorial school, Bangalore
Class : Class 6
Soumya raj is correct

Ans 7:

Anantjit Chander from Apeejay School, Sector 15, Faridabad
Class : Class 10
Yes, it is true, we can compare the movement to the joint mentioned as "P" with that of a joystick. It is a ball-socket joint, and it is found in the shoulders and the hips.

Ans 8:

Pratham Dave from GNS, Bangalore
Class : Class 7
All of them are incorrect so the answer is D

Ans 9:

Rimi from TLISK, pune
Class : Class 9
its a

Ans 10:

Pratham Gupta from P G Garogdia, Mumbai
Class : Class 5
Correct answer is C

Ans 11:

KONDURU TEJESH from Sri chaitanya international school, Bangalore
Class : Class 4
p is not pivot joint but a ball and socket joint but according to me c is the correct ans

Ans 12:

Ashee Srivastava from APEEJAY SCHOOL NOIDA , NOIDA
Class : Class 7
But a is the answer .

Ans 13:

Advaith from National Public School, HSR Layout , Bengaluru
Class : Class 8
The question is asking to select the incorrect question, but option C is correct and option A is wrong so A is the correct answer

Ans 14:

Ashwak from Cambridge, Jalandhar
Class : Class 9

Ans 15:

Smita De from Bishop Cotton Girls School, BANGALORE
Class : Class 5
correct answer is supposed to be C. But according to SOF it is A.

Ans 16:

Rimi from TLISK, pune
Class : Class 9
OH mene to d kiya tab laga ki sab wrong the.oh my god now acinfusing yar

Ans 17:

Ashwak from Cambridge, Jalandhar
Class : Class 9
I think the answer is A

Ans 18:

harry potter from Hogwarts school of witchcraft and wizardry , london
Class : Class 5
but read the question... you have to select the incorrect ans

Ans 19:

Prerona Chatterjee from Delhi Public School North Kolkata, Kolkata
Class : Class 5
actually the picture P is wrong . they want to express it as pivot joint.

Ans 20:

Biju Pappachan from Rkc , Raipur
Class : Class 1
The correct ans is A.

Ans 21:

Syeda Safina Taj from Federal public school, Bengaluru
Class : Class 4
Answer a

Ans 22:

from ,
Class :

Ans 23:

Ashee Srivastava from APEEJAY SCHOOL NOIDA , NOIDA
Class : Class 7
I did it c but according to SOF, it is a.

Ans 24:

Gauri Singh from St Johns School Marhauli, Varanasi
Class : Class 8
The correct answer is a but i did it wrong... (i did ans C)

Ans 25:

from ,
Class :
The correct answer is A) according to SOF

Ans 26:

Arav Gupta from Delhi Public School Gurgaon, Gurgaon
Class : Class 8
And the question said to find the incorrect option! So a.

Ans 27:

Preeti tanwar from DON BOSCO ACADEMY, Patna
Class : Class 9
c

Ans 28:

anita from Manan Vidya Ranchi, Ranchi
Class : Class 4
D

Ans 29:

Mathamagician from BGSNPS, Bengaluru
Class : Class 6
EASY. It is a). FOund it very quickly. I wonder why many of you put c)

Ans 30:

Devasree from Presidium, Ghaziabad
Class : Class 10
Soumya raj is correct answer should be c as ball and socket joint is only found in legs and arms and it is definitely not found in the skull .

Ans 31:

from ,
Class :
the answer is a but i did it c

Ans 32:

bharati nath from Springdale high school, Kalyani
Class : Class 6

Ans 33:

from ,
Class :
iojkbn

Ans 34:

Rishik De Sarkar from Delhi Public School Gurgaon, Gurgaon
Class : Class 7
WTH?

Ans 35:

marika from VTS, Mumbai
Class : Class 4
cool question

Ans 36:

Goutham Ram from Lecole' Chempaka International, Trivandrum
Class : Class 5

Post Your Answer