Question #7204

1Which of the following helps to determine whether a body will be in thermal equilibrium with another body?
thermal energy
zeroth law of thermodynamics
numerical scale
first law of thermal thermodynamics
2A thermocouple works on the principle of --------------------
variation of e.m.f with temperature
variation of volume with temperature
variation of pressure with temperature
variation of resistance with temperature
3The fundamental interval of a thermometric scale refers to ---------------------
triple point of water
difference between upper and lower fixed points
ratio of the upper to the lower fixed point
temperature of steam at standard atmospheric pressure
4The ice and steam points on a thermometer correspond to X and 50mm respectively. A temperature of 60degree celcius corresponds to 52mm on the thermometer. Calculate the value of X
4 mm
8 mm
10 mm
20 mm
5A railway line is laid with 10m length of rail on a day when the temperature is 2:50oC . There is a gap of 0.5cm between the rails. Find the temperature at which the gap will close.
27:00oC
32:50oC
41:70oC
44:20oC
6In an experiment involing an ideal gas the pressure (P) of the gas is plotted against the reciprocal of the volume ( 1/V ) of the gas at constant temperature. The graph is------------
a straight line with negative slope and intercepts on both axes
a straight line with a positive slope and passes through the origin
a curve which is asymptotic to both axes
a parabolic curve
7A platinium resistance thermometer has resistance of 52.5 ohms and 9.75 ohms at 0 degrees celcius and 100 degrees celcius respectively. When the resistance is 8.25 ohms, find the temperature
63:6oC
66:7oC
75:0oC
84:6oC
8The choice of thermometric liquids in a thermometer should depend on the following properties except:
must be opaque
must have a low melting point
must have a high specific heat capacity
must have a high coefficient of expansion
9A square plate of side 10 cm is made of a metal of linear expansivity 2Â10À5 /K. As the plate is heated from 30o C to 100o , the area of one face of the plate will increase to -------------
105:6cm2
104:2cm2
102:8cm2
101:4cm2
10The equation PaVbTc=constant reduce to Boyle’s law if
a=1,b=0,c=0
a=1,b=1,c=0
a=0,b=0,c=1
a=1,b=1,c=1
11The product of pressure (P) and volume (V) has the dimension or unit of ---------------------------
force
power
impulse
work
12The S.I unit of heat capacity is -------------------
joules
joule per kilogramme
joule per Kelvin
kilogramme per joule
13The process by which a substance changes directly from solid state to gaseous state at any temperature is called
Van der Waals process
sublimation
Newton’s law of cooling
evaporation
14A gas occupies a certain volume at 27 degree celcius.If it is heated at constant pressure, its volume is exactly doubled at a temperature of ----------------------
54 degrees celcius
219 degrees celcius
327 degrees celcius
600 degree celcius
15If the specific heat capacity of water initially is 4:2Â103 per kg per K and g=10m=s2 , the difference in temperature of water between the top and bottom of a 210 m high water fall is ----------
0:05oC
0:5oC
1:0oC
4:2oC
16A person suffers a more severe burn from steam than from boiling water because -------------------
steam is at higher temperature than boiling water
steam spreads more easily over the skin than boiling water
steam penetrates more deeply into the skin than boiling water
steam possesses greater heat energy per unit mass than boiling water at the same temperature
17A change of state is often accompanied by a change in (I) temperature (II) density (III) internal energy (IV) mass. Which of these is correct?
I and II
II and III
III and IV
I and IV
18When the pressure of the vapour on top of an enclosed liquid is equal to the pressure of the atmosphere, the liquid is at its ---------
boiling point
dew point
freezing point
melting point
19One of these is NOT a factor that can affect the rate of evaporation
temperature
pressure
volume of liquid
air dryness
20The Van der Waals equation for real gases is given as
p+av2=RT
(p+aV2)b=RT
(PÀaV2)b=RT
(P+aV2)(VÀb)=RT

Expert's answer

Unfortunately, your question requires a lot of work and cannot be done for free.

Submit it with all requirements as an assignment to our control panel and we'll assist you.

Submit it with all requirements as an assignment to our control panel and we'll assist you.

## Comments

Assignment Expert15.03.12, 15:16Unfortunately, this question cannot be done for free.

Please submit it with all requirements as an assignment to our control panel and we'll assist you.

tajudeen olukayode noah14.03.12, 20:30pls i need the answer

## Leave a comment