Dimension of Work
What is SI Unit of Amount of Substance?
Gram
Mol
Kg
Newton
Which of the following is trivalent impurity ____________
Germanium (Ge)
Arsenis (As)
Boron (B)
Antimony (Sb)
A Pure semiconductor is Called ___________semiconductors
Intrinsic
Extrinsic
Pentavalent
Trivalent
The resistivity as semiconduetor is between ___________________
None of above
The electrical prperties of material depends upon number of elctrons in______________________
Innermost orbit
Outermost Orbit
Both of above
When Antimony (As) is added to Pure silicon (Si) we get__________SemiCondutor
N-type
P-type
When Aluminium (Al) is added to Pure Germanium (Ge) we get___________Semiconductor
Temp scales dgree celsius (ºC) and Kelvin are related by
ºC + 273 = K
ºC - 273 = K
ºC = K + 273
ºC = K / 273
The Boiling point of water in Kelvin scale of temperature is _______________
273 K
373 K
100 K
212 K
A Cup of tea kept on table losses its heat by______________process
Conduction
Convection
Radiation
All of above
Which of the following number has significant figure 4
0.001
0.020
0.300
2.021
Factors on which resistance of certain material depends
Length
Area
Temp
Nutrom are electrically ___________parchles
Positive
Negative
Neurtral
According to coulomb's loa and Force of attraction/repulsion is inversely proportional to________________________
Mutipuication of Charges
Square of distances between charges
Distance between charges
Square root of distance between charges
Which mode of heat transfer is fastest as all other modes
Radilation
Which mode of heat transfer is slowest of all other models
Which mode of heat transfer can take place even without a medium
Condultion
Raliation
None of abve
Cp is always_____________CV
Half of
Greater than
equal to
Smaller than
There flask cused to keep liqued Hot or coll for long times has double walled glass vessel because
Glass is bad conductor of heat
Glass is light in weight
Glass is good conductor of Heat
Glass has good reflective porperty