Chemistry 11
Chapter 3 Gases
Test 10
1.
is a ________?
a) Both
b) Molar gas constant
c) Variable quantity
d) Constant quantity
2.
One mole of an ideal gas has at 273.16K and one atm pressure has a volume of?
a) 2241 dm
3
b) 22.414 dm
3
c) None of these
d) 22000 dm
3
3.
If the pressure is expressed in mm of mercury or torr and volume of the gas in cm
3
then values of R are?
a) 624 cm
3
torr K
-1
mol
-1
b) 62400 cm
3
torr K
-1
mol
-1
c) 623 cm
3
torr K
-1
mol
-1
d) 6245 cm
3
torr K
-1
mol
-1
4.
The units of “R” is?
a) atm K/mol
b) atm K mol
-1
c) none of these
d) dm
3
atm K
-1
mol
-1
5.
If 45
o
C then find in Fahrenheit?
a) 112
b) 114
c) 115
d) 113
6.
Avogadro’s number is equal to the?
a) 4.03 x 10
23
b) 5.02 x 10
23
c) 6 x 10
23
d) 6.02 x 10
23
7.
The value of R is?
a) 0.821 dm
3
atm K
-1
mol
-1
b) 0.72 dm
3
atm K
-1
mol
-1
c) 0.0821 dm
3
atm K
-1
mol
-1
d) 8.3143 dm
3
atm K
-1
mol
-1
8.
When pressure is given in N/m
2
and volume in m
3
the value of R always taken ________?
a) 62400 cm
3
torr K
-1
mol
-1
b) 8.3143 J K
-1
mol
-1
c) 0.0821 dm
3
atm K
-1
mol
-1
d) 83143 cm
3
torr K
-1
mol
-1
9.
One dm
3
H
2
at STP weighs approximately?
a) 0.98999 grams
b) 0.899 grams
c) 0.0899 grams
d) None of these
10.
Equal volume of all gases at same temperature and pressure contain?
a) Different number of molecules
b) Same number of molecules
c) None of these
d) Equal number of molecules
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