|
| Q1.
If average mol. wt. of air is 21, then what would be the density of chlorine relative
to air? |
 2.44 |
| 3 |
| 3.2 |
| found
only experimentally |
|
| Q2.
Which of the following contains greatest number of oxygen atoms? |
| one
gram of oxygen atom |
| one
gram O2 |
| one
gram O3 |
| all
have the same number of atoms |
|
| Q3.
Four flasks of one litre each are separately filled with the gases H2,
He, O2 and O3 at the same temperature and pressure. The
ratio of total number of atoms of these gases present in different flasks would
be |
| 1
is to 1 is to 1 is to 1 |
| 2
is to 1 is to 2 is to 3 |
| 1
is to 2 is to 2 is to 3 |
| 3
is to 2 is to 2 is to 1 |
|
| Q4.
The number of moles in 1 kg. of Iron rust Fe2O3 |
| 1 |
| 2 |
| 5.5 |
| 6.26 |
|
| Q5.
Four flasks of one litre each contain N2 as described below. Which
one would contain maximum number of molecules under similar conditions? |
| 2.5
gm molecule of N2 |
| 5
gm atom of Nitrogen atoms |
| 3.01x1024
nitrogen atoms |
| 82
gm of N2
|
| |
|
|
|
