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

A science teacher labelled three glass slides as P, Q and R. She painted slide Q with light blue colour, slide R with black colour and slide P was left as such.
Then she asked students to put the slide on a white paper having (X) mark on it.
Students will be able to see the mark clearly (or partially)

A In slide P as it is translucent
B In slide Q as it is translucent
C In slide R as it is opaque
D In all the slides as paint does not change the nature of glass.


It's written'Students will be able to see the mark clearly (or partially)'. What should I do the question is not even making up it's mind!

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:

Arsh from Lahs, Gwalior
Class : Class 6
why!

Ans 3:

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 4:

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 5:

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

Ans 6:

Shourya Kumar from Delhi Public School Noida, Noida
Class : Class 6
it is correct r is opaque and we would not be able to see the mark

Ans 7:

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

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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

Nidhi knocked three metal thumbtacks into the middle section of a block of wood and covered this section with a piece of white paper. Then, she brought a lighted candle near this section.
After few seconds, she removed the lighted candle and found burn marks on the paper except on the areas where the thumbtacks were present. Which of the following best explains this observation?


A The paper was a good conductor of heat.
B The thumbtacks and the paper had different temperatures.
C Some parts of the wood absorbed the heat from the candle flame.
D The thumbtacks conducted heat away quickly before the paper could get burnt.


Ans 1:

Issac Newton from IIT Indian Institutes of Technology , Jalandhar
Class : Class 5
The correct answer should be A!!!!!

Ans 2:

Soumyaraj Roy from Kendriya Vidyalaya , Thiruvananthapuram
Class : Class 6

Ans 3:

SRISANTH from Edify, Tirupathi
Class : Class 5

Ans 4: (Master Answer)

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

Ans 5:

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

Ans 6:

Alisha from Delhi Public School kolar road, Bhopal
Class : Class 4
No idea........can someone just tell me how D??????????????????????????????

Ans 7:

Atheeq Ahmed Shaik from Ravindra Bharathi Global School, chennai
Class : Class 4
d

Ans 8:

Atheeq Ahmed Shaik from Ravindra Bharathi Global School, chennai
Class : Class 4
d

Ans 9:

ANURADHA NAIR from SANDEEPANI VIDYA NIKETHAN SCHOOL, Thrissur
Class : Class 5
IT IS D ANURADHA 4 C SVN KUTTUMUKKU

Ans 10:

from ,
Class : Class 5
I can't get the answer of this one.

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Ram kumar Rathore from Akshara, Pune
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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Nitin Shekhar from K V GERUKAMUKH, DHEMAJI
Subject :NSO    Class : Class 7

Ans 1:

Nayanaa Gupta from Modern Vidya Niketan Aravali Hills , Faridabad
Class : Class 7

Ans 2:

Aman Sumesh from Apeejay School, Kharghar
Class : Class 8
The correct answer is Option(C).

Ans 3:

SUVAMDEBNATH from KVS BAMANGACHI, Howrah
Class : Class 9
(c)

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Pradanya from KV IIT, Chennai
Subject :NSO    Class : Class 6

Ans 1:

Aishi Pal from Kendriya Vidyalaya DRDO, Bangalore
Class : Class 6
d

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Pradanya from KV IIT, Chennai
Subject :NSO    Class : Class 6

Ans 1:

Shreyas Alangekar from DR.KD Shendge C.B.S.E School ,Omerga, Omerga
Class : Class 6
Find the HCF / GCD of 378 and 588, you will get the answer.

Ans 2:

VIJAYA SREYAS B from NARAYANA OLYMPIAD SCHOOL KUKATPALLY, HYDERABAD
Class : Class 6
D because we should LCM as either Indian or Foreign stamps should be placed and max is LCM.

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Guni Mishra from Anand Niketan Shilaj, Ahmedabad
Subject :NSO    Class : Class 6

Ans 1:

VIJAYA SREYAS B from NARAYANA OLYMPIAD SCHOOL KUKATPALLY, HYDERABAD
Class : Class 6
None of the above. No object can be conductor and insulator at the same time except for some elements like germanium and silicon.

Ans 2:

HARSH NAIK from KLE ENGLISH MEDIUM SCHOOL, SHOLAPUR
Class : Class 8
graphite

Ans 3:

Tanvi T from Arsha Vidya Mandir, Chennai
Class : Class 8
yes.....graphite is a electrical conductor and a heat insulator

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sanjana from NARAYANA E TECHNO , Chennai
Subject :NSO    Class : Class 3

Ans 1:

sanjana from NARAYANA E TECHNO , Chennai
Class : Class 5
its easy

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sanjana from NARAYANA E TECHNO , Chennai
Subject :NSO    Class : Class 3

Ans 1:

sanjana from NARAYANA E TECHNO , Chennai
Class : Class 5
very easy

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