Which is the central most part of an atom ?

4.  Which is the central most part of an atom ?
  (A)  proton
  (B)  electron
  (C)  neutron
  (D)  nucleus






Ans: D

Unit of measuring current is

3.  Unit of measuring current is 
  (A)  volts  (B)  ampere
  (C)  decibel  (D)  ohm








Ans: B

The 60/40 solder refers to 60

2.  The  60/40  solder  refers  to  60%  _____________  and  40%  lead metal
alloy.
  (A)  Alloy
  (B)  Tin
  (C)  Iron
  (D)  Copper







Ans: B