National Science Olympiad Forum By SOF Olympiad Trainer - Page 621
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Mihir Arora from dpsg, ghaziabad
Subject :NSO    Class : Class 3

Ans 1:

Malav patel from Navrachana school sama , Vadodara
Class : Class 5
A is the correct answer as 1 and 2 are correct

Ans 2: (Master Answer)

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

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Harshita.B from Narayana e techno school, Poonamalle
Subject :NSO    Class : Class 3

Ans 1:

Ashwak from Cambridge, Jalandhar
Class : Class 9
I too

Ans 2:

SHAUNAK from St Xaviers School, HAZARIBAG
Class : Class 3
The correct answer is D [friction].

Ans 3:

Thaneesha from Radcliffe School, Kharghar
Class : Class 7
Y...I DONT UNDERSTAND SOOOOO....................TELL MEH!!

Ans 4:

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

Ans 5: (Master Answer)

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

Ans 6:

Arnav Yadav from Delhi Public School Rohini ,New Delhi, New Delhi
Class : Class 6
obviusly it will be d

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Kimaya and Sanaya from Ekya School, Bengaluru
Subject :NSO    Class : Class 3

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RAYAN NAJEEB from Delhi public school, RIYADH
Subject :NSO    Class : Class 1

Ans 1: (Master Answer)

Admin from revisewise, Noida
Class : Class 1
No, the answer is D because in the option A the second image is of a full moon and not a new moon.

Ans 2:

Parth Kaushish from MDPS, Faridabad
Class : Class 6

Ans 3:

Saiansh Biswas from Little Flower School, Jamshedpur
Class : Class 4
I think the correct answer is a, not d.

Ans 4:

shruti badgujar from Modern English School , Aurangabad
Class : Class 2
a

Ans 5:

Akshat Singh Kushwaha from Billabong high international school , Bhopal
Class : Class 1

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Adithi Keshava from National Center For Excellence , Bangalore
Subject :NSO    Class : Class 4

Ans 1:

Ishaan Singh from BBPS, Gurugram
Class : Class 9
The answer is B.

Ans 2:

Ajinkya Kamble from Thakur public school, Mumbai
Class : Class 7
the question you had given ,in the solution of the question of it is another one,the solution of the real question was its solution so we could not find the solution of this question.

Ans 3:

Shuvangi Das from Vivekananda mission school, haldia
Class : Class 9
why the question have given like this I don't know. why olimpiadtrainer sometimes do like this.Can anyone tell me the answer.I request to you all.Please help me or else I have tell to my father.I don't want to tell my father.I beg to you please.

Ans 4:

Dishita Santosh Walujkar from Nutan English School, Kurduwadi
Class : Class 7
B

Ans 5:

adhiraj chaudhary from apeejay school noida, noida
Class : Class 3
blah blah blah every one

Ans 6:

vivaan sethi from GD goenka public school, Delhi
Class : Class 4
all of you shut up especially ajinkya

Ans 7:

Ishaani Jha from VIBGYOR High Hennur, Bengaluru
Class : Class 5
why is everyone arguing?

Ans 8:

Shuvangi Das from Vivekananda mission school, haldia
Class : Class 9
kojjk

Ans 9:

adhiraj chaudhary from apeejay school noida, noida
Class : Class 3
i will tell to your dad das ji

Ans 10:

adhiraj chaudhary from apeejay school noida, noida
Class : Class 3
you all are mad

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Aryan Goyal from DPS , Dwarka, New Delhi
Subject :NSO    Class : Class 3

Ans 1: (Master Answer)

Admin from revisewise, Noida
Class : Class 1
No, the correct answer is D. When written in decimal, the value of it comes out to be 0.2 and the rest are bigger than it. In fractions, as the denominator gets bigger, the number gets smaller.

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JOSH K SINGH from SACRED HEART, LUDHIANA
Subject :NSO    Class : Class 7

Ans 1: (Master Answer)

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

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Aswath Krishna from DPS EAST, Bengaluru
Subject :NSO    Class : Class 6

Ans 1:

Aarush Goyal from D.A.V Pblic school, Sector 14, Faridabad
Class : Class 6
IT IS AND THE ANSWER IS B

Ans 2:

Shuvangi Das from Vivekananda mission school, haldia
Class : Class 9

Ans 3:

Shaurya Rai from Vibgyor High Balewadi, Pune
Class : Class 6
Option A can also be a correct answer because the transparency of the glass is not mentioned. It can be translucent or transparent as well.

Ans 4:

tanmay chaudhry from BAL BHAVAN PUBLIC SCHOOL, New Delhi
Class : Class 4
slide r is opaque and slide q is translusent

Ans 5:

Anika Saha from New Town School, KOLKATA
Class : Class 6
All of them were made of glass. So if P was left as it is without painting wouldn't it be transparent??

Ans 6:

Shuvangi Das from Vivekananda mission school, haldia
Class : Class 9
Bcoz when glass Q is painted with light blue we are still able to see the mark , that means its still translucent. When glass R is painted with black, we are not able to see as black is an opaque color. This what the logic meant for. So, option B is correct

Ans 7:

Arsh from Lahs, Gwalior
Class : Class 3
why!

Ans 8:

Ashwak from Cambridge, Jalandhar
Class : Class 9
Falguni and Tanmay , the C option is correct as R is opaque but the question is through which slide can we see the X mark clearly or partially and we can't see through because as you said R is opaque . Answer D is not correct either because colour affects the transparency of the slide. Answer A is not correct because P is transparent not translucent. That leaves us with Option B which is correct as Q is translucent and the students can see the X partially through it . Hope this explanation helps you clear all your doubts about this question.💜💜💜Oh and by the way completely not related to the question who else is an army ( BTS fans ) ?

Ans 9:

Shourya Kumar from Delhi Public School Noida, Noida
Class : Class 9
it is correct r is opaque and we would not be able to see the mark

Ans 10:

Shuvangi Das from Vivekananda mission school, haldia
Class : Class 9

Ans 11:

tanmay chaudhry from BAL BHAVAN PUBLIC SCHOOL, New Delhi
Class : Class 4
yes even c is the correct ans falguni is saying right

Ans 12:

Falguni from Navkis, Bangalore
Class : Class 7
Even C is correct. In the workbook solution it’s given that slideR is supposed to be opaque

Ans 13:

Ashwak from Cambridge, Jalandhar
Class : Class 9
Sorry for the typo answer C is incorrect

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Aryan Goyal from DPS , Dwarka, New Delhi
Subject :NSO    Class : Class 3

Ans 1: (Master Answer)

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

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Yashaswee Gupta from Bhavan's Vidyashram, Jaipur
Subject :NSO    Class : Class 4

Ans 1:

Sayan Duary from Vidyasagar Shishu Niketan, Paschim Medinipur
Class : Class 8
The correct answer will be D

Ans 2:

Atheeq Ahmed Shaik from Ravindra Bharathi Global School, chennai
Class : Class 6
d

Ans 3:

Aahana Agarwal from NPS Koramangala, Bengaluru
Class : Class 6
I can't get the answer of this one.

Ans 4:

Reyansh Modumudi from Skill stork international school, Warangal
Class : Class 2
a bru

Ans 5:

Soumyaraj Roy from Kendriya Vidyalaya , Thiruvananthapuram
Class : Class 7

Ans 6:

ANURADHA NAIR from SANDEEPANI VIDYA NIKETHAN SCHOOL, Thrissur
Class : Class 9
IT IS D ANURADHA 4 C SVN KUTTUMUKKU

Ans 7: (Master Answer)

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

Ans 8:

Ashwak from Cambridge, Jalandhar
Class : Class 9
The correct answer should be A!!!!!

Ans 9:

Alisha from Delhi Public School , bopal, Ahemdabad
Class : Class 8
No idea........can someone just tell me how D??????????????????????????????

Ans 10:

SRISANTH from Edify, Tirupathi
Class : Class 5

Ans 11:

Atheeq Ahmed Shaik from Ravindra Bharathi Global School, chennai
Class : Class 6
d

Ans 12:

Riddhima Pandey from Chinmaya Vidyalaya, Bokaro Steel City
Class : Class 3
The thumb tacks were a good conductor of heat it was knocked in the wood so it could have easily condected the heat in itself

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