National Science Olympiad Forum By SOF Olympiad Trainer - Page 392
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Shayan Bari from Kendriya Vidyalaya, Katihar
Subject :NSO    Class : Class 7

Ans 1:

Soumyajit Roy from Delhi Public School Jamnagar, Jamnagar
Class : Class 9
It should be A

Ans 2:

Pratham Dave from GNS, Bangalore
Class : Class 7
Yes, The answer should be A and not D

Ans 3:

Shayan Bari from Kendriya Vidyalaya, Katihar
Class : Class 7
tttt

Ans 4:

Akshay Jha from DPS NERUL, Navi Mumbai
Class : Class 7
All options are wrong, it can't be A because cotton burns with smell of burning paper and similarly it can't be D because silk burns with an odour of charred meat.

Ans 5:

Agastya Varshney from Podar International School , Mumbai
Class : Class 7

Ans 6:

Anish from Vibgyor, Pune
Class : Class 8
silk smells of charred meat . This was the answer given even in the chapterwise question bank

Ans 7:

Anamkhan Mulla from Navrachna Sama, Vadodara
Class : Class 7
cotton-burning paperwool-burning hairsilk-charred meat

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Sahasra Shanker from KV IIT, Chennai
Subject :NSO    Class : Class 8

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Sahasra Shanker from KV IIT, Chennai
Subject :NSO    Class : Class 8

Ans 1:

Anoushka Anbu from Amara Jyoti Public School, Bengaluru
Class : Class 8
Isn't it option a ?

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Tamrashi Pani from National Public School, Bangalore
Subject :NSO    Class : Class 6

Ans 1:

Ananya from GIIS, Bangalore
Class : Class 6
can also be option B right?

Ans 2:

Aarathy Sudhir Aarav Sudhir from Global Indian International School, Abu Dhabi
Class : Class 7
b right?

Ans 3:

Aarush Patil from St.Arnold's, pune
Class : Class 1

Ans 4:

Mayank Das from Army Public School Bolaram, Hyderabad
Class : Class 2
magnet y should attract towards magnet z cause they both have the same pole facing towards each other

Ans 5:

ARUNAV from DPS VINDHYANAGAR, VINDHYANAGAR
Class : Class 10
correct answer : D

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Tamrashi Pani from National Public School, Bangalore
Subject :NSO    Class : Class 6

Ans 1:

Tamrashi Pani from National Public School, Bangalore
Class : Class 8
Current flows from positive terminal to negative terminal.... so the bulbs will glow simultaneously

Ans 2:

Tamrashi Pani from National Public School, Bangalore
Class : Class 8
D is correct

Ans 3:

Saransh Tiwari from Jaipuria, Varanasi
Class : Class 6

Ans 4:

Shreyansh Gupta from MVN, faridabad
Class : Class 6
no this question is wrong 0_0 O_O o_o o_O

Ans 5:

SAI SHOURYA VARDHAN from T.I.M.E School, Hyderabad
Class : Class 7

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Sahasra Shanker from KV IIT, Chennai
Subject :NSO    Class : Class 8

Ans 1:

The Address from Somaiya, Mumbai
Class : Class 6

Ans 2:

Sahasra Shanker from KV IIT, Chennai
Class : Class 6
why??????????????

Ans 3:

Anoushka Anbu from Amara Jyoti Public School, Bengaluru
Class : Class 8

Ans 4:

The Address from Somaiya, Mumbai
Class : Class 6

Ans 5:

The Address from Somaiya, Mumbai
Class : Class 6

Ans 6:

Anoushka Anbu from Amara Jyoti Public School, Bengaluru
Class : Class 8
Because option a is correct as reaction takes place in all three beakersOption b is also correct as Mg is more reactive than Zn.Option c is also correct as Zn is more reactive than Ag.Option c is also correct because

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Sahasra Shanker from KV IIT, Chennai
Subject :NSO    Class : Class 8

Ans 1:

Sahasra Shanker from KV IIT, Chennai
Class : Class 6
why????????????????

Ans 2:

yug goswami from Dps , Jamnagar
Class : Class 8
speed= distance/time20=x/20so,x or distance is 400m

Ans 3:

The Address from Somaiya, Mumbai
Class : Class 6

Ans 4:

Antarik Maity from Bharatiya Vidyabhaban, Kolkata
Class : Class 8
No the answer is 200 as the car is having a uniform acceleration of 1m/s².So, according to the formula s=ut 1/2at², the distance covered (s) = 0 1/2at²=1/2x1x400=200m.

Ans 5:

VISHNU T M from b, Bengaluru
Class : Class 9
Correct answer is D

Ans 6:

Antarik Maity from Bharatiya Vidyabhaban, Kolkata
Class : Class 8
No the answer is 200 as the car is having a uniform acceleration of 1m/s^2.So, according to the formula s=ut 1/2at^2, the distance covered (s) = 0 1/2at^2=1/2x1x400=200m.

Ans 7:

The Address from Somaiya, Mumbai
Class : Class 6

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Sahasra Shanker from KV IIT, Chennai
Subject :NSO    Class : Class 8

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Tamrashi Pani from National Public School, Bangalore
Subject :NSO    Class : Class 6

Ans 1:

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

Ans 2:

Viraj from OMKAR ENGLISH MEDIUM SCHOOL CBSE, Kalyan
Class : Class 6
I think it is none of these

Ans 3:

arin chaitanya from the shri ram school, New Delhi
Class : Class 8
the answer is b if you have a doubt check the synopsis of the chapter

Ans 4:

Tamrashi Pani from National Public School, Bangalore
Class : Class 8
I think the answer is A

Ans 5:

Shreyansh Gupta from MVN, faridabad
Class : Class 6
BRO THE ANSWER IS NOT B SILVER IS A CONDUCTER AND THE ONLY THINGDS WHICH ARE NOT CONDUCTER ARE WOOD AND PALSTIC SO THE ANSWER WILL BE C NOT B NOR A NOR D

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PARTH JAIN from DPS INDIRAPURAM, GHAZIABAD
Subject :NSO    Class : Class 8

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