Question:কাঠমুন্ড তাপমাত্রা ‘2@C`বাড়ালে, তাপমাত্রা কত হবে ? 

A ‘- 4@C` 
B `0@C` 
C `+ 2@C` 
D `+ 4@C` 

+ Answer
B 

+ Explanation
`- 2@C + 2@C = 0@C `

+ Report

Irin Moni

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