Arsenics (As), Antimony (Sh) and Phosphrous (P) are examples of
Tetravalent
Trivalent
Pentavalent
Divalent
The gap between valance band and conduction band is called
Breakdown gap
Valancy gap
Forbidden energy gap
None of above
Which of the following is trivalent impurity ____________
Boron (B)
Arsenis (As)
Antimony (Sb)
Germanium (Ge)
Which of the following is NOT a conductor
Aluminium
Iron
Copper
Mica
In insulators the Valancy band and condution band_________________
Have small gap
Have huge gap
overlap each other
Which mode of heat transfer takes place without actual migration of particiles
Conduction
Conveection
Radiatiion
Which mode of heat transfer is fastest as all other modes
Convection
Radilation
Which mode of heat transfer can take place even without a medium
Condultion
Raliation
None of abve
Conduction is ___________than convection
Faster
Medium
Slower
Cp is always_____________CV
Greater than
equal to
Half of
Smaller than
The Boiling point of water in Kelvin scale of temperature is _______________
100 K
273 K
212 K
373 K
A Cup of tea kept on table losses its heat by______________process
Radiation
All of above
32 F when converted into celcius will become_____________
273ºC
100ºC
373ºC
0ºC
273.15 K when conveted into Forhenite will become___________________
32ºF
373ºF
0ºF
100ºF
100ºC will be when converted into kelvin will become
-273 K