सिगरेट लाइटर में निम्नलिख� – McqOptions

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1.	सिगरेट लाइटर में निम्नलिखित में से कौन सी गैस प्रयुक्त होती है -
A.	ब्यूटेन
B.	मिथेन
C.	प्रोपेन
D.	रेडॉन
Answer» B. मिथेन

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