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तापमान 7°C से गिरकर −12°C हो जाता है। गिरावट कितनी बड़ी है?

A19°C
B7°C
C12°C
D5°C
Answer & Solution
Correct answer: A. 19°C
गिरावट 7 − (−12) = 7 + 12 = 19°C है।
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