Monday, August 25, 2014

Do you know Basic Science - Quiz - 25 Aug 2014

1. The difference between isotopes of an element is due to the presence of a different number of _______________.

2. The ejection of electrons when a metal surface is irradiated is called?
[A]Atomic spectrum
[B]Photoelectric effect
[C]Zeeman effect
[D]Black body radiation

3. Which was the first metal used by man?

4. Which gas is used in the manufacture of vanaspati from vegetable oil?
[C]Carbon dioxide

5. The electron affinity for the inert gases is ___________.