RRB ALP 2013 سوالات 28
سوال: بلب کا فیلمنٹ بنانے کے لیے استعمال ہوتا ہے:
اختیارات:
A) ٹنگسٹن
B) آئرن
C) نائکروم
D) کاربن
Show Answer
جواب:
صحیح جواب: A
BETA
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