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

User Forum

Ask Your Question
SHAUNAK from St Xaviers School, HAZARIBAG
Subject :NSO    Class : Class 3

Ans 1:

Snow White from Le Setea , Paris
Class : Class 4
D

Ans 2:

Aditri Dixit from TCIS, Bangalore
Class : Class 3

Post Your Answer

Karangat house from Navy Children School, Payyannur
Subject :NSO    Class : Class 3

Ans 1:

Karangat house from Navy Children School, Payyannur
Class : Class 3
A

Ans 2:

Karangat house from Navy Children School, Payyannur
Class : Class 3
B

Post Your Answer

Devansh trehan from Blue bells international school , New delhi
Subject :NSO    Class : Class 3

Ans 1:

SANSKAR from SETH ANANDRAM JAIPURIA SCHOOL, Ghaziabad
Class : Class 6
lungs and spinal cords are part of nervous system so lungs and kidney are part of excretory system(lungs dispose co2 from body)

Ans 2:

Eshan Ghosh from Don Dosco, Berhampore
Class : Class 3

Ans 3:

SIDDHARTH SOMANI from Vibgyor High, Mumbai
Class : Class 3
Answer is D because both lungs n kidney are in Exetery system

Ans 4:

ANSHUL GAJJAR from PODAR INTERNATIONAL SCHOOL, AHMEDABAD
Class : Class 3
D

Ans 5:

Bushra aslam from uttam, Ghaziabad
Class : Class 4

Ans 6:

Purva Padmanabh Kulkarni from Podar International School ICSE Kalyan, Dombivali east
Class : Class 3
i think heart is correct answer. please elaborate, how come kidney is right answer a

Ans 7:

Gurram Srisanthan from St Patricks Academy, Bengaluru
Class : Class 3
i think brain n spinal cord are parts of nervous system whereas kidneys n lungs are part of excretory system,through lungs we inhale o2 n exhale co2,kidneys excrete urines

Ans 8:

Kanak goel from Ursuline senior secondary convent school, Greater Noida
Class : Class 4
Heart

Ans 9:

Suhani Chauhan from Sai international School, bhubaneswar, Bhubaneswar
Class : Class 3
I thinks it should be heart. As lungs are connected with the heart not kidney.

Ans 10:

saisavit from sri kumaran ps, bangalore
Class : Class 3
D because spinal cord helps brain to control the body.

Post Your Answer

Ujjwal Upadhyay from Navy Children school, Vasco
Subject :NSO    Class : Class 5

Ans 1:

Lohithakshith Pati from Olive international school , qatar
Class : Class 6
use your brain bro

Post Your Answer

samyak shwet from kidzee, Begusarai
Subject :NSO    Class : Class 8

Refer to the given passage and answer the following questions.
An experiment is conducted by a student to check the conductivity of potato and the set-up is shown here.

What happens to the compass needle when the switch is closed?

A The compass needle will point towards the right.
B The compass needle will point towards the left.
C The compass needle will not deflect.
D The compass needle will point downwards.


Please answer this

Post Your Answer

Pratyay Sarkar from South Point High School, Kolkata
Subject :NSO    Class : Class 7

Ans 1:

Sanket Kulkarni from Euroschool, Pune
Class : Class 8
Please explain your answer. I am really confused.@UTKARSH SAWARN

Ans 2:

UTKARSH SAWARN from AIR FORCE SCHAOOL AMBALA CANTT, AMBALA CANTT
Class : Class 8
IN MY OPINION OPTION C IS THE CORRECT ANSWER

Post Your Answer

Pratyay Sarkar from South Point High School, Kolkata
Subject :NSO    Class : Class 7

Ans 1:

Raavi from DPS, Ranchi
Class : Class 7
@bhagyesh .As metal rod or electroscope is positively charged all the currents flown to the object will be positive and the leaves will repel each other

Ans 2:

Bhagyesh Kamal from DPS, Mumbai
Class : Class 8
how to do it

Ans 3:

priyanka from kendriya vidalaya kathmandu, JHAJJAR
Class : Class 8
option a

Ans 4:

sachinthite@rocketmail.com from Sinhghad Public School Korti, Pandharpur
Class : Class 4
how priyanka

Ans 5:

priyanka from kendriya vidalaya kathmandu, JHAJJAR
Class : Class 8
option a

Post Your Answer

Pratyay Sarkar from South Point High School, Kolkata
Subject :NSO    Class : Class 7

Post Your Answer

Gauri Singh from St Johns School Marhauli, Varanasi
Subject :NSO    Class : Class 6

Ans 1:

NISHTHA GUPTA from DPS Vasat Vihar, newdelhi
Class : Class 6
answer will be b as loudspeakers use electromagents

Ans 2:

Shourya Ganesh from The Green Acres Academy, Mumbai
Class : Class 6

Ans 3:

Veda Dua from DPS R K PURAM, New Delhi
Class : Class 6
Loudspeakers use electromagnets, so the answer is option B

Ans 4:

Mridul Jain from Shishukunj International School Indore, Indore
Class : Class 6
The answer is B as loudspeakers use electromagnets and the magnetic field isn't there always .

Ans 5:

satwik patnaik from DPS Rourkela, Rourkela
Class : Class 7
answer should be b

Ans 6:

Smita De from Bishop Cotton Girls School, BANGALORE
Class : Class 6
answer is B so obvious

Ans 7:

Shourya Ganesh from The Green Acres Academy, Mumbai
Class : Class 6
Loudspeakers use electromagnets so it should be answer b

Ans 8:

Shreya Yegna Narayanan from psbb, chennai
Class : Class 6
Loud speakers use electromagnets as they dont need magnetic force when not in use so ans is B

Ans 9:

Sharmi Chowdhury from G.D Birla Centre For Education , Kolkata
Class : Class 7
Don't loudspeakers use electromagnets?

Ans 10:

Shayan Bari from Kendriya Vidyalaya, Katihar
Class : Class 7
Loudspeakers use electromagnets.

Ans 11:

Shourya Ganesh from The Green Acres Academy, Mumbai
Class : Class 6
Loudspeakers use electromagnets.So,the answer should be (B)

Ans 12:

Tamrashi Pani from National public school, whitefield, Bangalore
Class : Class 6
But all of them use permanent magnets...so D is correct

Post Your Answer

Gauri Singh from St Johns School Marhauli, Varanasi
Subject :NSO    Class : Class 6

Ans 1:

arjun from the bishops school camp , pune
Class : Class 7

Ans 2:

rocker harshil from TImpany senior secondary school, Visakhapatnam
Class : Class 6
as only the option (D) will be magnetic and the SOFT IRON will act as a keepers

Post Your Answer