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

A potter shapes pots out of clay (Process 1). He then bakes the pots in an oven (Process 2). Which of the following statements is correct?

A Process 1 is a reversible, physical change while process 2 is an irreversible, physical change.
B Process 1 is an irreversible, physical change while process 2 is an irreversible, chemical change.
C Process 1 is a reversible, physical change while process 2 is an irreversible, chemical change.
D None of these.


Is it A or C?

Ans 1:

Archisman Rout from Podar International School, Powai
Class : Class 7
A is correct because it just turns hard but it is still clay only.And also chemical change doesn't mean that it is irreversible,Chemical change means that the identity of the substance we started with is lost.Here the identity is not lost.So A is correct.

Ans 2:

RUDRAKSH BISWAS from MAYOOR PRIVATE SCHOOL, ABU DHABI
Class : Class 6
It really should be A

Ans 3:

Hridhaan Talukdar from National Public School Koramangala, Bangalore
Class : Class 6

Ans 4:

Anika Saha from New Town School, KOLKATA
Class : Class 6
The answer is A.

Ans 5:

Advay Das from Delhi Public School, Gurgaon
Class : Class 5

Ans 6:

Aarush Goyal from D.A.V Pblic school, Sector 14, Faridabad
Class : Class 6
A is the correct answer

Ans 7:

ATHARV RAHUL MAHAJAN from ST. STEPHENS SCHOOL CHANDIGARH, SAS NAGAR
Class : Class 6
IF WE SHARP A PENCIL IT IS A PHYSICAL IRREVERSIBLE CHANGE .SO,IF WE HEAT A POT IS PHYSICAL IRREVERSIBLE CHANGE. BUT IT COULD HAPPEN THAT THE COMPOSITION OF CLAY MIGHT CHANE BECAUSE OF HEATING AS THE MOLECULES STICK TO EACH OTHER

Ans 8:

VIJAYA SREYAS B from NARAYANA OLYMPIAD SCHOOL KUKATPALLY, HYDERABAD
Class : Class 6
C because we can get clay back from a wet pot by smashing it,but once it heats up, it dries the clay and makes it stone hard.

Ans 9:

ridhima from mdps, faridabad
Class : Class 6

Ans 10:

Tanishtha from DPS, Greater Noida
Class : Class 7
c is the correct answer

Ans 11:

Aadvik saini from Mvn sector 17, Faridabad
Class : Class 8
answer is a

Ans 12:

D Murari from Indian School of Excellence, Bangalore
Class : Class 9
C,because- it is a chemical change. after baking we can break it into smaller particles but it won't form the same clay, with same properties again

Ans 13:

Vidula Malkar from DPYA High school, Mumbai
Class : Class 7
a is the correct answer because chemical composition dose not change

Ans 14:

Rasha Ranjan from DPS NOIDA , Vaishali
Class : Class 6
Yes ,Because chemical means change in the properties but there is no change .The answer is A

Ans 15:

Arnesh from dps, delhi
Class : Class 6
It should be A

Ans 16:

Sohan Choudhury from Delhi Public School Electronic City Bengaluru, Bengaluru
Class : Class 6
on heating, the clay pot doesn't turn into stone,right?it doesn't change composition once heated , it is still clay ! answer is "A"

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