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

User Forum

Ask Your Question
khushi Joshi from Svkm , Mumbai
Subject :NSO    Class : Class 6

Ans 1:

Aarush Goyal from D.A.V Pblic school, Sector 14, Faridabad
Class : Class 6
because our body contains minerals like iron and has a large quantity of un - distilled water

Post Your Answer

khushi Joshi from Svkm , Mumbai
Subject :NSO    Class : Class 6

Which of the following statements are correct?
(i) Human body is a good conductor of electricity.
(ii) The air gap surrounding an electric circuit acts as a conductor.
(iii) Silver conducts electricity better than any other metal.
(iv) When electricity lights up a bulb, no heat is produced.

A (i) and (ii)
B (iii) and (iv)
C (i) and (iii)
D (ii) and (iii)


Can someone explain how the human body is a good conductor of electricity?

Ans 1:

Aarush Goyal from D.A.V Pblic school, Sector 14, Faridabad
Class : Class 6
because our body contains minerals like iron and has a large quantity of un - distilled water

Ans 2:

Abhishri Dwivedi from gems modern academy , Dubai
Class : Class 6
Answer (C) is correct because our body is a good conductor of electricity and it has even been mentioned in the synopsis. Now, that means that (i) is correct so automatically B and D get canceled. The air in no form acts as a conductor and is an insulator. So C is also canceled. This leaves us with our final aswer A.

Ans 3:

soubhik raha from bishop morrow school, nabadwip
Class : Class 6
actually our human body consists 70% of water and if we touch electricity they are conducted through our body to either to another person or to any metal or to directly the ground.

Ans 4:

Ashwak from Cambridge International School, Saudi Al Dera
Class : Class 7
CORRECT ANS IS D

Post Your Answer

khushi Joshi from Svkm , Mumbai
Subject :NSO    Class : Class 6

Label the dry cell in the correct order.


A (i) Carbon and Manganese dioxide mixture, (ii) Carbon rod, (iii) Ammonium chloride
B (i) Carbon rod, (ii) Ammonium chloride, (iii) Zinc container
C (i) Ammonium chloride, (ii) Zinc container, (iii) Carbon rod
D (i) Zinc container, (ii) Carbon rod, (iii) Carbon and Manganese dioxide mixture


The correct answer is C as the part labeled (i) is ammonium chloride, (ii) is zinc container and (iii) is carbon rod.

Ans 1:

Rochishnu Ghosh hazra from Techno India Group Public School -Bolpur , Bolpur Shantiniketan
Class : Class 7
I COULD NOT UNDERSTAND ??

Ans 2:

Prisha from DPS, Hyderabad
Class : Class 6
actually none of the answers are correct

Ans 3:

SOUVAGYA SAHA from De Nobili School, DHANBAD
Class : Class 6
c is the only correct ans because in a zinc carbon dry cell zinc container is the negative terminal of the cell and carbon is the positive terminal of the cell and we need a electrolyte to convert chemical energy into electrical energy i.e. ammonium chloride.

Ans 4:

Tamrashi Pani from Sof Olympiad trainer international school, Bangalore
Class : Class 7
I think D is correct

Ans 5:

Sevanthi. B. R from Saint Paul's English school, Bengaluru
Class : Class 6

Ans 6:

Doofal from Sanskriti School, Delhi
Class : Class 6
I was dumb enough to not read the order that is why I got it wrong.

Ans 7:

A S Neeraj from K V 2, Chennai
Class : Class 6
Actually, none of the answer is correct. IN option D they changed the order

Ans 8:

Rishab from OWS, New Delhi
Class : Class 7

Ans 9:

SAI SHOURYA VARDHAN from T.I.M.E School, Hyderabad
Class : Class 6

Ans 10:

Sharanya from Holy Cross School Agartala, Agartala
Class : Class 6
ALL THE OPTIONS ARE WRONG , EVEN OPTION (C)

Ans 11:

Ashwak from Cambridge International School, Saudi Al Dera
Class : Class 7
D is the correct answer

Ans 12:

DHEER PANDEY from Sentia School, Hyderabad
Class : Class 7

Ans 13:

RUCHI from dps, Faridabad
Class : Class 7

Ans 14:

DHEER PANDEY from Sentia School, Hyderabad
Class : Class 7
D is the correct answer but I have no idea why is it C??

Ans 15:

Aarush Goyal from D.A.V Pblic school, Sector 14, Faridabad
Class : Class 6
yes

Ans 16:

KRITHYA GUPTA from LOTUS VALLEY INTERNATIONAL SCHOOL, NOIDA
Class : Class 6

Ans 17:

Nishka Rawat from Inventure Academy, Bengaluru
Class : Class 4
All answers are wrong - even 'D' and 'C'. 'C' would, however, be right if the line for '(ii)' was a little shorter.

Ans 18:

Arsh from Lahs, Gwalior
Class : Class 8
ANS is D!!!!!!!!!!!!!!!!!!!!!!!!!!

Post Your Answer

from Sri Chaitanya Techno School, Bengaluru
Subject :NSO    Class : Class 6

Ans 1:

Vedant Ghumare from North Point School, Dhule
Class : Class 8
B is the correct answer

Ans 2:

Aarush Goyal from D.A.V Pblic school, Sector 14, Faridabad
Class : Class 6
I think B is the correct answer

Ans 3:

Chaitanya L K from SKCHEC, bangalore
Class : Class 8
B is the correct answer

Post Your Answer

from Sri Chaitanya Techno School, Bengaluru
Subject :NSO    Class : Class 6

Ans 1:

Aishi Pal from Kendriya Vidyalaya DRDO, Bangalore
Class : Class 7
d

Ans 2:

prabu sun from tagore, salem
Class : Class 7

Ans 3:

Aarush Goyal from D.A.V Pblic school, Sector 14, Faridabad
Class : Class 6
yes because h is sepal but for c option g is the ovule and that are the only tiny eggs

Post Your Answer

Hiyansh Jain from Podar International School, Mumbai
Subject :NSO    Class : Class 5

Ans 1:

Pratham Dave from GNS, Bangalore
Class : Class 6
Yes AREEN , THE ANSWER IS B

Ans 2:

Pratham Dave from GNS, Bangalore
Class : Class 6
Yes AREEN , THE ANSWER IS B

Ans 3:

AREEN from BOLTON, HYDERABAD
Class : Class 6
Ans is B because Iron rod does not break when hit and it can't be stretched, rubbber band does not break when hit but it can be stretched, ceramic tile breaks when hit but does not allow light to pass through, and spectacle lens break when hit and allow light to pass through.

Ans 4:

Aarnav Grover from Calorx olive international school, Ahmedabad
Class : Class 5
b easy

Ans 5:

VISHNU from NARAYANA OLYMPIAD GOPALAPURAM, chennai
Class : Class 5

Ans 6:

Aarush from Podar, Mumbai
Class : Class 7
the widow pane would be elastic

Post Your Answer

Dishen dharmenra patel from Anand niketan to the satellite , Ahmedabad
Subject :NSO    Class : Class 3

Ans 1: (Master Answer)

Admin from revisewise, Noida
Class : Class 1
The correct answer is A.

Post Your Answer

from Sri Chaitanya Techno School, Bengaluru
Subject :NSO    Class : Class 6

Read the given paragraph where few words have been italicised. Rain is our main source of water. Water vapours present in the air precipitate to form clouds. When rain falls, some of it condenses back to atmosphere and some passes through the soil upto the level of non-porous rocks beneath to form groundwater. Groundwater may come out at some places to form water table. Select the incorrect option regarding this.

APrecipitate should be replaced with condense.
BCondenses should be replaced with evaporates.
CGroundwater should be replaced with run-off.
DWater table should be replaced with spring.


Ans 1:

Naman from Svm, Nalasopara
Class : Class 6
a is write

Ans 2:

Snigdha swaminath from Christ nagar higher secondary school , Trivandrum
Class : Class 7
D is right too right

Ans 3:

Kushagra Kishore from Chrysalis High, Bengaluru
Class : Class 8

Ans 4:

Dipti Gurjar from Sulochana Natu Bharatiya Vidya Bhavan , Pune
Class : Class 8
Actually,water does not ''Precipitate'' to form clouds.As long as my memory tells me, water ''Condenses'' to form clouds.

Ans 5:

Dipti Gurjar from Sulochana Natu Bharatiya Vidya Bhavan , Pune
Class : Class 8

Ans 6:

Aarush Goyal from D.A.V Pblic school, Sector 14, Faridabad
Class : Class 6
yes a is the correct answer

Post Your Answer

Rakesh Singh from The Study, Puducherry
Subject :NSO    Class : Class 5

Post Your Answer

from Sri Chaitanya Techno School, Bengaluru
Subject :NSO    Class : Class 6

Refer to the given figure with its parts labelled as P, Q, R and S. Which of the following statements are correct regarding this?

(i) Plants like carrot, radish and turnip store their food in R.
(ii) Q and P are modified into tendrils in plants like grapevine and Gloriosa respectively, to help them give support.
(iii) In cactus and aloe vera P is reduced to spines and Q stores water and mucilage.
(iv) In onion and beetroot, S and Q are modified respectively to store food.
(v) In ginger and potato, Q is underground and modified to store food.

A(i), (ii) and (iii) only B.
B(i), (ii) and (v) only
C(iii) and (iv) only
D(iii), (iv) and (v) only


Ans 1:

Aarush Goyal from D.A.V Pblic school, Sector 14, Faridabad
Class : Class 6
correct answer is B

Post Your Answer