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Soham De from DPS, Nerul, Mumbai
Subject :NSO    Class : Class 5

Tanmay heated a bimetallic strip made up of metal X and metal Y. After a few minutes, he observed that it curled as shown.
What can be concluded from this experiment?


A Metal X expands more than metal Y.
B Metal Y expands more than metal X.
C Metal X expands and metal Y contracts.
D Metal Y expands and metal X contracts.


Ans 1:

Ashmi Narkar from The Shishukunj International School, Jhalaria Campus, Indore
Class : Class 8
B because if Y expands and X contracts, X will be a lot smaller than Y. Here, both are almost the same size.

Ans 2:

Ishaan singhal from CCWS, Jaipur
Class : Class 3
as if we will contract metal x so it is not neccessery that y will contract if we contract metal y x has to be conyracted with it ans should be a

Ans 3:

Hitanshi Behera from Loyola School , Bhubaneswar
Class : Class 4
ans should be D as if metal x contracts and metal y expands then the 2 metals will bend inward an as an ellusion we see that y is longer than x

Ans 4:

Hitanshi Behera from Loyola School , Bhubaneswar
Class : Class 4
iron-nickel alloy notable for its lack of expansion or contraction with temperature changes. hence all metals do NOT expand

Ans 5:

Arav Gupta from Delhi Public School Gurgaon, Gurgaon
Class : Class 7
D or B not sure.

Ans 6:

Hitanshi Behera from Loyola School , Bhubaneswar
Class : Class 4
sof does not reply that is why we are confused

Ans 7:

Arav Singh from Jyoti Niketan School, Azamgarh
Class : Class 6
b

Ans 8:

Fareeha siddiqua from Janki Devi public school , Mumbai
Class : Class 5
b as Y expands more

Ans 9:

shubhavi Dhondge from NPS, Banagalore
Class : Class 8
B is the answer

Ans 10: (Master Answer)

Admin from revisewise, Noida
Class : Class 1

Ans 11:

Soumyaraj Roy from Kendriya Vidyalaya , Thiruvananthapuram
Class : Class 7
Sumit Singhal , this is a bimetallic metal . Here , the two metals cannot go away from each other . So here , if y expands than x will also expand , and if x expands than y will also expand . I am getting confusion between A and B .

Ans 12:

aditya parlewar from St. Xaviers High school , Nagpur
Class : Class 3

Ans 13:

Sanskriti Nagar from Rose Bud Academy, khagaria
Class : Class 5
B is the correct answer

Ans 14:

Saipriya from Sankara, Chennai
Class : Class 8
B m kids because Y is only curled much . dont get angry

Ans 15:

aditya parlewar from St. Xaviers High school , Nagpur
Class : Class 3
b

Ans 16:

Shivangi from St. Michael's High School, Patna
Class : Class 5
C is the correct answer

Ans 17:

Srishti Rani from DBMS ENGLISH SCHOOL, Jamshedpur
Class : Class 5
cONFUSED IN d AND B

Ans 18:

Aarnav Grover from Anand Niketan Shilaj, Ahmedabad
Class : Class 9
d

Ans 19:

Bhargavi from Bethany, Bangalore
Class : Class 1
The answer is B because the question says that he HEATED both the metals (most metals expand on heating) and Y has expanded more than X

Ans 20:

Gauri Singh from St Johns School Marhauli, Varanasi
Class : Class 8
The answer should be opt.B

Ans 21:

Pratham Dave from GNS, Bangalore
Class : Class 7
B is the answer to this question

Ans 22:

Anahita Baruah from DPS Bangalore East, Bengaluru
Class : Class 2
All metal expands on heating. Here metal Y expands more which leads to curling of both X and Y. B is the correct option.

Ans 23:

SHUBHANI LAKHERA from ANN MARY SCHOOL, Dehradun
Class : Class 5
B is the right answer

Ans 24:

Satvik Agrawal from Delhi Public School, bhopal
Class : Class 5
D or B? please vote

Ans 25:

ayush from kv no.1 dhanbad, Dhanbad
Class : Class 10
B

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