A. Nitrogen
A.
B. Carbon dioxide
B.
C. Oxygen
C.
D. Methane
D.
Correct Answer: B
সঠিক উত্তর: B
Explanation
ব্যাখ্যা
Dry ice is the solid form of carbon dioxide (CO2). It's known for its low temperature and ability to sublimate (change directly from solid to gas). This characteristic, along with its use as a cooling agent, makes it a useful substance in various applications.