engineering recuitment ICAR Technician 2021 Mock Test (Re-Exam) General Knowledge Science Technology and Inventions

‘तड़ित चालक’ का आविष्कार किसने किया?

1

एडवर्ड प्रिस्टली

2

विंट सर्फ

3

बेंजामिन फ्रैंकलिन

4

जॉन डाल्टन

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