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

Ans 1:

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

Ans 2:

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 3:

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

Ans 4:

Eshan Ghosh from Don Dosco, Berhampore
Class : Class 3

Ans 5:

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

Ans 6:

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 7:

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 8:

Bushra aslam from uttam, Ghaziabad
Class : Class 5

Ans 9:

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 10:

SIDDHARTH SOMANI from Vibgyor High, Mumbai
Class : Class 4
Answer is D because both lungs n kidney are in Exetery system

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

Ans 1:

Lohithakshith Pati from Olive international school , qatar
Class : Class 7
use your brain bro

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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

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

Ans 1:

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

Ans 2:

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

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

Ans 1:

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

Ans 2:

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

Ans 3:

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

Ans 4:

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

Ans 5:

Raavi from DPS, Ranchi
Class : Class 8
@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

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

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

Ans 1:

Joe Bipin from National Public School Agra, Bangalore
Class : Class 6
loud speakers have both electromagnets and permanent magnets

Ans 2:

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

Ans 3:

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

Ans 4:

Mridul Jain from Shishukunj International School Indore, Indore
Class : Class 7
The answer is B as loudspeakers use electromagnets and the magnetic field isn't there always .

Ans 5:

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

Ans 6:

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

Ans 7:

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

Ans 8:

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

Ans 9:

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 10:

Joe Bipin from National Public School Agra, Bangalore
Class : Class 6
they use both so the answer is d

Ans 11:

SOUVAGYA SAHA from De Nobili School, DHANBAD
Class : Class 7

Ans 12:

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

Ans 13:

Tamrashi Pani from Sof Olympiad trainer international school, Bangalore
Class : Class 7
But all of them use permanent magnets...so D is correct

Ans 14:

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

Ans 15:

Aahana Mallya from EISB, BANGALORE
Class : Class 6
Loud speakers use permanent magnets

Ans 16:

Veda Dua from Delhi Public School, R. K. Puram, New Delhi
Class : Class 7
Loudspeakers use electromagnets, so the answer is option B

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

Ans 1:

arjun from the bishops school camp , pune
Class : Class 8

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

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septic pooper from dps gurgaon, Gurgaon
Subject :NSO    Class : Class 5

Ans 1:

AREEN from BOLTON, HYDERABAD
Class : Class 6
Ans should be A because tuemeric powder is solid and solids are incompressible. Liquids are also incompressible but the some of the liquid has gone above the end of the piston, which is inside the syringe. Gases are compressible, so the piston easily moves.

Ans 2:

Ujjwal Upadhyay from Navy Children school, Vasco
Class : Class 6
Well... I think the answer is B

Ans 3:

Ashwak from Cambridge International School, Saudi Al Dera
Class : Class 8
The answer is B

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student from school, city
Subject :NSO    Class : Class 6

Ans 1:

Anushka Srivastava from Cjm, Dehradun
Class : Class 7
its C acording to me

Ans 2:

NISHTHA GUPTA from DPS Vasat Vihar, newdelhi
Class : Class 6
solution?

Ans 3:

BHAVYA from iswk, Oman
Class : Class 6
can I have an explanation please....... plz...plz...plz...

Ans 4:

shreyas from phoenix greens, Hyderabad
Class : Class 6

Ans 5:

Neil Mathew from National Public school, bengaluru
Class : Class 6
How is it C!?

Ans 6:

Lakshmi from FPS, Bangalore
Class : Class 7
c is the answer

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