RRB ALP 2013 ప్రశ్నలు 28
ప్రశ్న: బల్బ్ ఫిలమెంట్ తయారీకి ఉపయోగించే పదార్థం:
ఎంపికలు:
A) టంగ్స్టన్
B) ఐరన్
C) నిక్రోమ్
D) కార్బన్
Show Answer
సమాధానం:
సరైన సమాధానం: A
BETA
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