問題一覧
1
Lower fixed point on Centigrade scale
0°
2
Melting point of ice
0°C , 32° F and 273 K
3
Upper fixed point in Centigrade scale
100°C
4
Boiling point of water
100°C , 212° F and 373 K
5
How many sections are in Centigrade scale
100
6
Lower fixed point on Fahrenheit scale
32° F
7
Upper fixed point in Fahrenheit scale
212° F
8
How many portions are in Fahrenheit scale
180
9
Lower fixed point in Kelvin scale
273
10
Upper fixed point in Kelvin scale
373
11
Divisions in Kelvin scale
100
12
When a body is heated the energy gained by the molecules
increases their kinetic energy and molecules move with grater amplitude so thermal expansion occurs
13
ΔL is
directly proportional to L1 and ΔT
14
ΔL=
L1αΔT
15
Coefficient of Volumetric expansion
β
16
The SI unit of α and β is
K-¹
17
β
3α
18
Device used to maintain a steady temperature
Bimetellic strip
19
Metal at the outside of Bimetellic strip has
higher coefficient of expansion
20
Boyle's law (at constant temperature)
Vα1/P
21
PV=constant The value of constant depends upon
Mass and Temperature of gas
22
Boyle's law is obeyed by real gases at
Low pressure high temperature
23
At high temperature and low pressure Real gas
doesn't obey Boyle's law
24
This picture shows
Pressure increases volume decrease
25
At constant temperature P and V graph is a
hyperbolic curve
26
graph between P and 1/V at constant temperature
Straight line
27
Charles law (at constant pressure...
..VαT)
28
At constant pressure Graph between temperature and volume is a
straight line
29
At very low temperature Charles law is not obeyed because
all gases liquify
30
According to Charles law if the graph between V and T is plotted backwards at -273°C the
volume of the gas becomes zero
31
Absolute zero
-273°C
32
it is a temperature at which the motion of the molecules of any substance cease to move
absolute zero
33
the value of R is
8.314 J/mol K
34
how many molecules are there in a cubic metre
3x10^25
35
the diameter of a molecule considered as a sphere is about
3x10^-10m
36
average transitional kinetic energy is equal to
Absolute Temperature
37
K =
Boltzmann constant
38
K=
R/NA
39
K=
1.38x10^-23J/moleculesK
40
specific heat capacity is
amount of heat required to raise the temperature of a unit mass of a substance through unit degree of temperature
41
ΔQ/mΔT is
specific heat capacity
42
Relationship between specific and molar specific heat capacity
C=Mc
43
product of the molecular mass and specific heat capacity of a substance is called
molar specific heat
44
Cp-Cv=
R
45
which of the following is true
Cp>Cv