National Science Olympiad Forum By SOF Olympiad Trainer - Page 408
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D HARSHINI from ST MARTINS HIGH SCHOOL CHINTAL, HYDERABAD
Subject :NSO    Class : Class 9

Ans 1:

ICHALKARANJI from dkte, ichalkranji
Class : Class 8
yes your are right

Ans 2:

Harsh Gupta from AECS Narora, Narora
Class : Class 9

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Snigdha swaminath from Christ nagar higher secondary school , Trivandrum
Subject :NSO    Class : Class 6

Ans 1:

Ayuni Pathak from Lotus Valley International school , Noida
Class : Class 6
is washing powder soluble

Ans 2:

RICHA BORAH from K V ANNA NAGAR, CHENNAI
Class : Class 7
Sugar ,salt and washing powder are soluble in water while sand ,chalk powder and saw dust are insoluble in water.

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naman test from DPS Pune, Pune
Subject :NSO    Class : Class 6

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Debarpan Das from Delhi Public School , Durgapur
Subject :NSO    Class : Class 5

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Swarit from Indian School Wadi kabir, Muscat
Subject :NSO    Class : Class 5

Ans 1:

Nishit Vaity from Euro School Airoli, Navi Mumbai
Class : Class 6
idk

Ans 2:

Arnav Nandan from ST PETERS COLLEGE AGRA, Agra
Class : Class 9
idk these type of questions because i am not able to understand what animal they are talking

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Aaron Dominic from Ryan International School, Bangalore
Subject :NSO    Class : Class 7

Ans 1:

Arshia Kochhar from Delhi Public School Dwarka , New Delhi, Dwarka
Class : Class 8
so confusingggg

Ans 2:

Riddhik Bose from Vibgyor High, Airoli, Mumbai
Class : Class 4

Ans 3:

Midhuna from ABCD, Banglore
Class : Class 3
IDK

Ans 4:

Adwitiya Roy from South Point High School, KOLKATA
Class : Class 8

Ans 5:

Kashvi Rawat from Gear Innovative International School, Bengaluru
Class : Class 3
Wouldn't 'A' be a short circuit?

Ans 6:

Advika Narkar from The Shishukunj International School, Jhalaria Campus, Indore
Class : Class 8
I don't think A will be a short circuit, as the current is flowing through an electric appliance (the bulb in this case), while a short circuit is when positive and negative terminals are connected directly. But I think that A is the correct answer as in all the other circuits, the circuit is open.

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Swarit from Indian School Wadi kabir, Muscat
Subject :NSO    Class : Class 5

Ans 1:

Debarpan Das from Delhi Public School , Durgapur
Class : Class 9

Ans 2:

Swarit from Indian School Wadi kabir, Muscat
Class : Class 6
BAD QUESTION!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! I AM ANGRY WITH U

Ans 3:

Subhanshi Jha from DPS Vsant Kunj, New Delhi
Class : Class 7

Ans 4:

Aaditya Malhotra from Isaac Newton Global School, Mumbai
Class : Class 3

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ALICE from Delhi Public School, UDAIPUR
Subject :NSO    Class : Class 3

Ans 1:

eekagrah bansal from Springdales dubai, dubai
Class : Class 6
clay boat can float on water so answer should be C (steel).

Ans 2:

Kashika Goel from DPS Noida, Noida
Class : Class 7
clay will always sink in water whether it is any clay pot or clay boat etc

Ans 3:

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

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Fabiola from birla public school, DOHA
Subject :NSO    Class : Class 6

Ans 1:

Jahnvi Bajpai from Vibgyor High, Banagalore
Class : Class 6

Ans 2:

Anamkhan Mulla from Navrachna Sama, Vadodara
Class : Class 7
Easyyyyyyyyyyyyyyyy

Ans 3:

Mitanshu Rajpurohit from B R Birla Public School, Jodhpur
Class : Class 6

Ans 4:

ADVAY BANSAL from LOTUS VALLEY INTERNATIONAL SCHOOL GURUGRAM, GURUGRAM
Class : Class 6

Ans 5:

ARUNAV from DPS VINDHYANAGAR, VINDHYANAGAR
Class : Class 10

Ans 6:

Ishitadas from Adamas World school , Ichapur
Class : Class 8

Ans 7:

aditri singh from jayshree periwal high school, jaipur
Class : Class 6

Ans 8:

Aadvik saini from Mvn sector 17, Faridabad
Class : Class 8

Ans 9:

malhar thorve from city internqtional school, satara road, pune
Class : Class 7

Ans 10:

Anish from St Peters Public School, Hyderabad
Class : Class 8
can you explain me

Ans 11:

Kalpesh from Tapovan , Mahesana
Class : Class 7

Ans 12:

Aadvik saini from Mvn sector 17, Faridabad
Class : Class 8

Ans 13:

Ojasvi Pradip Nimje from Bhavan's Bhagwandas Purohit Vidya Mandir, Nagpur
Class : Class 6
Please explain the answer

Ans 14:

Vedang Amonkar from Dr K B Hedgewar High School, Panaji
Class : Class 6

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Pratul Kumar Sahoo from Presidium, Gurugram
Subject :NSO    Class : Class 6

Ans 1:

Arnesh from dps, delhi
Class : Class 6
The answer is D as even if we move the metal the colour of the solution won't change.

Ans 2:

Devabhrith from Delhi Public School Electronic City Bangalore, Bengaluru
Class : Class 8
If we remove the metallic piece the solution's color won't change.So,Therefore it is an irreversable change and as it has been caused by Chemical Reaction of Metal and Copper Sulphate.So,Answer is D

Ans 3:

Reynah Gupta from The Shri Ram School, Aravali, Gurugram
Class : Class 10

Ans 4:

SKIyer from CNS, Mumbai
Class : Class 6
No, missed it by some the properties of the metal mix with the solution. So according to me it is D which is the right answer

Ans 5:

Aadvik saini from Mvn sector 17, Faridabad
Class : Class 8
answers abcd

Ans 6:

Ayansh Mallick from Birla Open Minds, Hyderabad
Class : Class 7
guys logically if we take a protein sample and then after mixing it if we extract it the color gets reversed something with metal

Ans 7:

Utkarsh Chakravarty from Pinnacle High International School, Mumbai
Class : Class 6
if we remove metal wont it turn blue again ?

Ans 8:

ARUNAV from DPS VINDHYANAGAR, VINDHYANAGAR
Class : Class 10

Ans 9:

Ashwak from Cambridge, Jalandhar
Class : Class 9
The answer is D Chemical and Irreversible

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