alleryঅ্যাসিড ব্যবহার করে ধাতু থেকে মরিচা অপসারণ করাকে কী বলা হয়?
Aগ্যালভানাইজিং
Bঅ্যানিলিং
Cস্মেল্টিং
Dপিকলিং
Answer & Solution
Correct answer: D. পিকলিং
মরিচা ও ক্ষয় দূর করতে অ্যাসিড দিয়ে ধাতুর প্রক্রিয়াকরণকে পিকলিং বলা হয়।
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