Q: Which of the following is not a biofertilizer ?

A: Mucor


Q: What is the rarest element on earth?

A: Astatine


Q: Vinegar is chemically a:

A: diluted acetic acid


Q: Red light is used in traffic signals because:

A: It has the longest wavelength


Q: The motion of which particle through a metallic wire is called electric current?

A: Electron


Q: Which of the following metals is the most ductile metal?

A: Gold


Q: 'ASTROSAT' is a satellite launched by ISRO for :

A: Astronomy research


Q: Atom bomb is based on:

A: Nuclear fission


Q: Which of the following contains maximum carbon dioxide ?

A: Oceans


Q: Who had discovered oxygen?

A: Priestly
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