Question

Questions related to science and scientific inventions

Answer 1

1) Who invented the BALLPOINT PEN?
Ans : Biro Brothers

2)What J. B. Dunlop invented?
Ans : Pneumatic rubber tire

3) Which scientist discovered the radioactive element radium?
 Ans : Marie Curie

4) Brass gets discoloured in air because of the presence of which of the following gases in air?
Ans : Hydrogen Sulphide

5) Which of the following is a non metal that remains liquid at room temperature?
Ans : Bromine


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