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Which chemical is used as an antifreeze in car radiators?
গাড়ির রেডিয়েটরে জমাটবিরোধী পদার্থ (Antifreeze) হিসেবে কোন রাসায়নিক ব্যবহার করা হয়?
Practice MCQ for SSC, UPSC, RRB Exams
A. Ethylene glycol
A. ইথিলিন গ্লাইকোল
B. Methanol
B. মিথানল
C. Propanol
C. প্রোপানল
D. Formaldehyde
D. ফর্মালডিহাইড
Correct Answer: A
সঠিক উত্তর: A
Explanation
ব্যাখ্যা
Ethylene glycol
is commonly used as an
antifreeze
in car radiators.
It lowers the
freezing point
of water and raises its
boiling point
.
This helps prevent the engine coolant from
freezing in winter
and
overheating in summer
.
Other options:
Methanol
– Sometimes used as antifreeze but less common due to toxicity and volatility.
Propanol
– Not typically used in car radiators.
Formaldehyde
– Used as a preservative, not as antifreeze.
ইথিলিন গ্লাইকোল
গাড়ির রেডিয়েটরে
জমাটবিরোধী পদার্থ
হিসেবে ব্যবহৃত হয়।
এটি জলের
হিমাঙ্ক কমায়
এবং
স্ফুটনাঙ্ক বাড়ায়
।
ফলে শীতে কুল্যান্ট
বরফে পরিণত হয় না
এবং গ্রীষ্মে
অতিরিক্ত গরম হয় না
।
অন্যান্য বিকল্প:
মিথানল
– কখনও কখনও ব্যবহৃত হলেও বিষাক্ত ও উড়নশীল।
প্রোপানল
– সাধারণত রেডিয়েটরে ব্যবহৃত হয় না।
ফর্মালডিহাইড
– সংরক্ষণকারী পদার্থ, জমাটবিরোধী পদার্থ নয়।
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