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Q:

जे बी डनलप ने किसका आविष्कार किया था?

  • 1
    न्यूमेटिक रबर टायर
  • 2
    कार म्यूजिक सिस्टम
  • 3
    स्टीयरिंग व्हील
  • 4
    डीजल इंजन
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Answer : 1. "न्यूमेटिक रबर टायर"
Explanation :

J.B. Dunlop is credited with inventing the pneumatic tyre that was first used in bicycles. The patent for it was granted to him on 7th December, 1888.


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